/* Definice lokálního aliasu pro DIN 1451 Mittelschrift z CDN */
@font-face {
    font-family: 'DIN 1451 Mittelschrift';
    src: url('https://cdn.jsdelivr.net/gh/OpenDesignFoundation/DIN-1451/DIN-1451-Mittelschrift.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

:root {
    --bg-main: #d3d1cb;          /* Premium warm-clay concrete workbench surface */
    --border: #bfbcb2;
    --border-focus: #101820;
    --text-main: #101820;         /* High-contrast sharp charcoal for print decals */
    --text-muted: #5b6266;
    --text-japanese: #101820;
    --accent: #ff4f00;            /* Primary functional orange */
    --accent-dim: rgba(255, 79, 0, 0.1);
    --radius: 3px;              /* Minimal corner radius for the device */

    /* Barvy pro OLED displeje */
    --screen-bg: #0d0d0d;
    --screen-bg-hover: #161616;
    --screen-text: #ffffff;
    --screen-muted: #666666;
    --screen-border: #262626;

    /* TE Hardware šasi parametry - Machined single-block sandblasted silver-gray aluminum */
    --chassis-top: #f5f4ef;      
    --chassis-bottom: #ebe9e2;    
    --control-border: rgba(0, 0, 0, 0.16);    
   
    /* Globální definice DIN fontu */
    --font-din: 'DIN 1451 Mittelschrift', 'DIN Alternate', 'DIN 1451', sans-serif;
    --beta: #FF0000;
}

.beta-badge {
    color: var(--beta);
}

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    touch-action: manipulation;
}

html, body {
    min-height: 100dvh;
    background-color: var(--bg-main);
    overflow-x: hidden;
    max-width: 100%;
}
body {
    position: relative;
    font-family: var(--font-din);
    background-image: radial-gradient(rgba(0, 0, 0, 0.08) 1px, transparent 1px);
    background-size: 16px 16px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* Prevents overflow clipping at negative vertical scroll */
    align-items: center;
    padding: 40px 20px;
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
}

/* INDUSTRIAL MINIMALIST BOOT LOADING SCREEN (TE DESIGN) */
#loader-screen {
    position: absolute;
    inset: 0;
    background: var(--chassis-top);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    font-family: var(--font-din);
    color: var(--text-main);
    transition: transform 0.6s cubic-bezier(0.85, 0, 0.15, 1);
}

#loader-screen.loaded {
    animation: crtPowerOn 0.4s cubic-bezier(0.85, 0, 0.15, 1) forwards;
}

@keyframes crtPowerOn {
    0% { clip-path: inset(0 0 0 0); opacity: 1; filter: brightness(1); }
    30% { clip-path: inset(0 0 0 0); opacity: 1; filter: brightness(2) contrast(1.5); }
    100% { clip-path: inset(50% 0 50% 0); opacity: 0; filter: brightness(3) contrast(2); }
}

#loader-screen svg rect {
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    animation: drawTeSvg 1s cubic-bezier(0.85, 0, 0.15, 1) forwards;
}

#loader-screen svg circle {
    opacity: 0;
    animation: fadeInTe 0.5s ease forwards;
    animation-delay: 0.6s;
}

@keyframes drawTeSvg {
    0% { stroke-dashoffset: 400; }
    100% { stroke-dashoffset: 0; }
}

@keyframes fadeInTe {
    to { opacity: 1; }
}

.progress-bar-container {
    width: 220px;
    margin-bottom: 20px;
}

.progress-bar-track {
    width: 100%;
    height: 10px;
    background: rgba(0,0,0,0.06);
    border: 1px solid var(--control-border);
    border-radius: 3px;
    padding: 2px;
    margin-bottom: 6px;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: var(--text-main);
    border-radius: 1px;
}

.progress-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    font-family: var(--font-din);
    color: var(--text-muted);
}

.boot-log-container {
    width: 220px;
    height: 32px;
    font-family: 'Fira Code', monospace;
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    line-height: 1.3;
    overflow: hidden;
    text-align: left;
}

/* CONTAINER WRAPPER FOR HANGER */
.container-wrapper {
    position: relative;
    padding-top: 0;
    width: 100%;
    max-width: 440px;
    margin: auto 0; /* Vertically centers when space allows, and scrolls naturally on small heights */
}

/* AMBIENT LED PROJECTING ON BACKGROUND */
.ambient-led-glow {
    position: absolute;
    top: 50%;
    right: 2px; /* Completely hidden behind the physical device chassis */
    margin-top: -10px;
    width: 2px;
    height: 20px;
    background: transparent;
    z-index: 1; /* Behind the .container */
    pointer-events: none;
    
    /* The light beam shoots out to the right mechanically */
    box-shadow: 
        12px 0 15px 2px rgba(255, 79, 0, 0.8),
        25px 0 35px 5px rgba(255, 79, 0, 0.25);
    
    /* Hard, binary blinking characteristic of industrial TE gear */
    animation: teMechanicalBlink var(--led-blink-speed, 1.6s) steps(1) infinite;
}

body.dark-theme .ambient-led-glow {
    /* Logical dark mode glow: wider dispersion, richer atmospheric falloff */
    box-shadow: 
        10px 0 20px 2px rgba(255, 79, 0, 0.75),
        25px 0 60px 10px rgba(255, 79, 0, 0.3),
        40px 0 100px 25px rgba(255, 79, 0, 0.15);
}

@keyframes teMechanicalBlink {
    0% { opacity: 1; }
    50% { opacity: 0; }
    100% { opacity: 1; }
}

/* TURN OFF LEDS WHEN DEVICE IS OFF */
body.power-off .ambient-led-glow {
    animation: none;
    opacity: 0;
    box-shadow: none;
}

body.power-off .plug-led {
    fill: #444 !important;
    filter: none !important;
}

/* Realistic light reflection off desk surface */
.plug-floor-glow {
    mix-blend-mode: normal; /* Better for colored light on a light gray desk */
    opacity: 0.65;
    transition: opacity 0.3s ease;
}

body.dark-theme .plug-floor-glow {
    mix-blend-mode: screen; /* Light additive on dark background */
    opacity: 0.65;
}

body.power-off .plug-floor-glow {
    opacity: 0 !important;
}

/* FAST BOOT FLICKER */
body.device-booting .ambient-led-glow {
    animation-duration: 0.1s;
}
/* BATTERY POWER MODE & SLEEP STATES */
.container #oled-canvas,
.container #oled-overlay,
.container #generated-password,
.container .strength-wrapper,
.ambient-led-glow,
.custom-checkbox {
    transition: opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1), filter 0.6s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.6s ease;
}

body.battery-mode #oled-canvas,
body.battery-mode #oled-overlay,
body.battery-mode #generated-password,
body.battery-mode .strength-wrapper {
    opacity: 0.7;
}

body.battery-mode .ambient-led-glow {
    opacity: 0.45;
}

body.battery-mode .custom-checkbox {
    filter: brightness(0.85);
    opacity: 0.85;
}

body.device-sleeping #oled-canvas,
body.device-sleeping #oled-overlay,
body.device-sleeping #generated-password,
body.device-sleeping .strength-wrapper {
    opacity: 0.08 !important; /* Faintly visible screen readability */
}

body.device-sleeping .ambient-led-glow {
    opacity: 0 !important;
    animation: none !important; /* Physically stops blinking to save CPU and visual noise */
}

body.device-sleeping .custom-checkbox {
    opacity: 0.22 !important; /* Faint keycap color outline */
    filter: brightness(0.35) grayscale(0.4) !important;
    box-shadow: none !important; /* Kills active backlighting glows in deep sleep */
}

/* HARDWARE BODY FRAME */
.container{
    width:100%;
    background: transparent;
    border-radius: var(--radius);
    box-shadow: 
        0 8px 0 #aba9a3, /* Solid volumetric bottom edge of the metal slab */
        0 12px 24px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
    transition: box-shadow 0.4s ease;
}

body.dark-theme .container {
    box-shadow: 
        0 8px 0 #12141c, /* Dark anodized bottom edge of the dark edition slab */
        0 12px 24px rgba(0, 0, 0, 0.45) !important;
}

/* METAL ASSEMBLY SCREWS */
.screw {
    width: 10px;
    height: 10px;
    background: radial-gradient(circle at 35% 35%, #ffffff 0%, #d8d6cf 50%, #aba9a2 100%);
    border-radius: 50%;
    border: 1.5px solid #aba9a2;
    position: absolute;
    z-index: 20;
    box-shadow: 
        inset 0 1px 1px #ffffff,
        0 1px 1px rgba(0,0,0,0.15);
}

body.dark-theme .screw {
    background: radial-gradient(circle at 35% 35%, #3a3d46 0%, #1e2026 50%, #0f1013 100%);
    border-color: #0f1013;
    box-shadow: 
        inset 0 1px 1px rgba(255,255,255,0.1),
        0 1px 1px rgba(0,0,0,0.4);
}

.screw::before {
    content: '';
    position: absolute;
    top: 3.5px;
    left: 1.5px;
    width: 5.5px;
    height: 1px;
    background: #374151;
}

body.dark-theme .screw::before {
    background: #000000;
}

.screw.top-left { top: 12px; left: 12px; transform: rotate(34deg); }
.screw.top-right { top: 12px; right: 12px; transform: rotate(115deg); }
.screw.bottom-left { bottom: 12px; left: 12px; transform: rotate(-55deg); }
.screw.bottom-right { bottom: 12px; right: 12px; transform: rotate(72deg); }

/* PROCEDURÁLNÍ ZRNOST PRO PLASTOVÉ ČÁSTI ŠASI */
.grainy-plastic {
    position: relative;
}

.grainy-plastic::after {
    content: "";
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.25;
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: 5;
}

/* TOP CHASSIS (VINTAGE WHITE) */
header {
    background: var(--chassis-top);
    padding: 42px 32px 24px 32px; /* Increased top padding to fit screen prints */
    border: 1px solid var(--control-border);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius) var(--radius) 0 0;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.5);
    position: relative;
}

/* Screen printed model identifier on top metal plate */
header::before {
    content: "MODEL SYSTEM: K.B. II [256-BIT]";
    position: absolute;
    top: 14px;
    left: 32px;
    font-family: var(--font-din);
    font-size: 7px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    opacity: 0.75;
    pointer-events: none;
    text-transform: uppercase;
}

header * {
    position: relative;
    z-index: 10;
}

h1{
    font-family: 'Space Mono', monospace;
    font-size: 2.1rem;
    font-weight: 400;
    margin-bottom: 8px;
    color: var(--text-japanese);
    letter-spacing: -0.02em;
    text-transform: uppercase;
    line-height: 0.95;
}

h1 .roman-numeral {
    font-family: inherit;
    font-weight: 400;
    font-size: inherit;
    letter-spacing: -0.18em;
    margin-left: 2px;
    display: inline-block;
    vertical-align: top;
    line-height: inherit;
}

.desc{
    color: var(--accent);
    font-size: 0.95rem;
    font-weight: 700;
    word-spacing: 3px;
    line-height: 1.1;
}

header h1,
header .desc {
    cursor: pointer;
}

.container.device-off header h1,
.container.device-off header .desc {
    pointer-events: none;
}

.subtitle {
    font-family: 'Space Grotesk', var(--font-din);
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-top: 8px;
    opacity: 0.85;
}

/* SPEAKER GRILLE */
.speaker-grille {
    position: absolute;
    top: 28px; /* Slightly adjusted to align with the new top print padding */
    right: 32px;
    width: 45px;
    height: 15px;
    background-image: radial-gradient(circle, #101820 1px, transparent 1px);
    background-size: 5px 5px;
    opacity: 0.75;
    z-index: 10;
}

body.dark-theme .speaker-grille {
    background-image: radial-gradient(circle, #ffffff 1px, transparent 1px);
    opacity: 0.15;
}

/* EDGE-TO-EDGE OLED DISPLAY (BLACK) */
.output-section {
    height: 154px; /* Hard-lock the physical height of the screen */
    box-sizing: border-box;
    background: var(--screen-bg);
    border-top: 1px solid #000000;
    border-bottom: 1px solid #000000;
    border-left: none;
    border-right: none;
    padding: 24px 32px;
    cursor: pointer;
    transition: background 0.15s ease;
    position: relative;
    z-index: 12;
    box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

#oled-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.22;
}

#oled-mini-boot {
    position: absolute;
    inset: 0;
    z-index: 50;
    background: #000;
    display: flex;
    flex-direction: column;
    padding: 12px;
    font-family: 'Fira Code', monospace;
    font-size: 10px;
    color: #ff4f00;
    text-align: left;
    overflow: hidden;
    pointer-events: none;
}

#oled-mini-log {
    white-space: pre-line;
    line-height: 1.4;
}

#oled-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
    font-family: 'Fira Code', monospace;
    font-size: 10px;
    color: #4c525d;
}

.oled-corner-top-left {
    position: absolute;
    top: 8px; /* Original canvas y: 16, minus text height roughly 8 */
    left: 12px;
}

.oled-corner-top-right {
    position: absolute;
    top: 8px;
    right: 12px;
    text-align: right;
}

.oled-success-text {
    display: none !important;
}

#generated-password, .strength-wrapper {
    position: relative;
    z-index: 2;
}

.output-section:hover {
    background: var(--screen-bg-hover);
}


#generated-password {
    height: 54px; /* Lock height so it never pushes the UI down */
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 6px;
    font-family: 'Fira Code', monospace;
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    word-break: break-all;
    text-align: center;
    color: var(--screen-text);
    transition: color 0.1s ease, background 0.1s ease, transform 0.1s ease;
    text-shadow: 0 0 3px #0d0d0d, 0 0 6px #0d0d0d, 0 0 12px rgba(255, 255, 255, 0.35);
    user-select: all;
    -webkit-user-select: all;
}

body.dark-theme #generated-password {
    text-shadow: 0 0 3px #0d0d0d, 0 0 6px #0d0d0d, 0 0 15px rgba(255, 255, 255, 0.5);
}

#generated-password.copied-state,
body.dark-theme #generated-password.copied-state {
    color: var(--accent);
    background: transparent;
    box-shadow: none;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-shadow: 0 0 3px #0d0d0d, 0 0 6px #0d0d0d, 0 0 12px rgba(255, 79, 0, 0.65);
    animation: teHardwarePop 0.22s cubic-bezier(0.25, 1, 0.5, 1.2) forwards;
}

@keyframes teHardwarePop {
    0% {
        opacity: 0;
        transform: translateY(8px) scaleY(0.7);
        filter: brightness(2.2) contrast(1.4);
    }
    60% {
        opacity: 0.9;
        transform: translateY(-2px) scaleY(1.05);
        filter: brightness(1.2);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scaleY(1);
        filter: none;
    }
}

/* Hide strength wrapper contents during copied/purged states but keep its top dashed border visible */
.strength-wrapper.copied-state > :not(.custom-tooltip) {
    opacity: 0 !important;
    pointer-events: none !important;
}

.strength-wrapper > * {
    transition: opacity 0.15s ease;
}

.tooltip-container {
    position: relative;
    cursor: help;
}
.custom-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    background: #0a0a0a;
    color: var(--screen-text);
    padding: 6px 10px;
    border: 1px solid var(--control-border);
    border-radius: 4px;
    font-family: 'Space Mono', 'Fira Code', monospace;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    z-index: 50;
    pointer-events: none;
    text-align: center;
}
.custom-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--control-border) transparent transparent transparent;
}
@media (hover: hover) and (pointer: fine) {
    .tooltip-container:hover .custom-tooltip {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(-6px);
    }
}

.strength-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px dashed var(--screen-border);
    padding-top: 12px;
}

.strength-meta {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-din);
    font-size: 0.75rem;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--screen-muted);
}

#strength-text {
    color: #888888;
}

.strength-bar{
    width:100%;
    height:3px;
    border-radius: 999px;
    background: var(--screen-border);
    overflow:hidden;
}

#strength-fill{
    width:0%;
    height:100%;
    background: var(--accent);
    transition: 0.2s ease;
}

#strength-feedback {
    font-family: 'Fira Code', 'Share Tech Mono', monospace;
    font-weight: 400;
    font-size: 0.68rem;
    letter-spacing: -0.01em;
    color: var(--screen-muted);
    line-height: 1.4;
    min-height: 34px;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}
#strength-feedback.fade-out {
    opacity: 0 !important;
}

@media (max-width: 480px) {
    #strength-feedback {
        font-size: 0.62rem;
        letter-spacing: -0.015em;
    }
}

/* BOTTOM CHASSIS (WARM GREY #908E8A) */
.controls-area {
    background: var(--chassis-bottom);
    padding: 28px 32px 42px 32px; /* Increased bottom padding for screen prints */
    display: flex;
    flex-direction: column;
    border: 1px solid var(--control-border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 
        inset 0 1px 0px rgba(255,255,255,0.18),
        inset 0 -1px 0px rgba(0,0,0,0.1);
    position: relative;
}

/* Screen printed engineering regulatory text decals on bottom metal plate */
.controls-area::before {
    content: "KAGIBOX DIVISION // PO-256 SECURE ENGINE";
    position: absolute;
    bottom: 12px;
    left: 32px;
    font-family: var(--font-din);
    font-size: 7px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    opacity: 0.75;
    pointer-events: none;
    text-transform: uppercase;
}

.controls-area::after {
    content: "DESIGN BY TE IN SWEDEN";
    position: absolute;
    bottom: 12px;
    right: 32px;
    font-family: var(--font-din);
    font-size: 7px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    opacity: 0.75;
    pointer-events: none;
    text-transform: uppercase;
}

.te-header-decal-link {
    position: absolute;
    top: 14px;
    right: 32px;
    font-family: var(--font-din);
    font-size: 7px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
    z-index: 20;
    cursor: pointer;
    transition: opacity 0.2s ease, color 0.2s ease;
}

.te-header-decal-link:hover {
    opacity: 1;
    color: var(--accent);
}

.container.device-off .te-header-decal-link {
    pointer-events: none;
    opacity: 0.75;
}

.controls-area * {
    position: relative;
    z-index: 10;
}

/* SEGMENTED RECTANGLE SWITCH */
.mode-capsule {
    display: flex;
    background: #d8d6cf; /* Recessed key frame background */
    padding: 2.5px;
    border-radius: 2px;
    margin-bottom: 24px;
    border: 1px solid var(--control-border);
    box-shadow: 
        inset 0 1.5px 3.5px rgba(0,0,0,0.15);
}

.mode-btn {
    flex: 1;
    background: #e2e0d8 !important;
    border: none;
    font-family: var(--font-din);
    color: #5c6266 !important; /* Muted gray for inactive button label */
    padding: 8px;
    font-size: 0.8rem;
    font-weight: 700; /* Crisp TE weight */
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 1px;
    cursor: pointer;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 2px) 0 var(--border),
        inset 0 1px 0 #ffffff;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease, color 0.15s ease;
}

.mode-btn.active {
    background: #ffffff !important;
    color: #101820 !important;
    transform: translateY(1.5px);
    box-shadow: 
        0 0.5px 0 var(--border),
        inset 0 1px 2.5px rgba(0,0,0,0.12) !important;
}

/* FORM FIELDS */
.form-group {
    margin-bottom: 20px;
}

/* MECHANICAL FADER (SLIDER) STYLE */
.fader-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    padding: 0;
    margin-bottom: 24px;
    box-shadow: none;
}

.fader-container::after {
    content: '';
    display: block;
    height: 4px;
    width: 100%;
    margin-top: 4px;
    background-image: linear-gradient(to right, var(--control-border) 1px, transparent 1px);
    background-size: 5% 100%;
    opacity: 0.55;
}

.fader-label-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* CUSTOM TE SLIDER RAIL */
input[type="range"].te-fader {
    -webkit-appearance: none;
    width: 100%;
    height: 20px;
    background: transparent;
    border: none;
    border-radius: 0;
    outline: none;
    box-shadow: none;
    margin: 8px 0 0 0;
    cursor: pointer;
}

/* Chrome/Safari fader track */
input[type="range"].te-fader::-webkit-slider-runnable-track {
    height: 4px;
    background: #d8d6cf; /* light grey slot base */
    border: 1px solid #bfbcb2; /* slot borders */
    border-radius: 1px;
    box-shadow: inset 0 1px 1px rgba(0,0,0,0.12);
}

/* Chrome/Safari fader cap */
input[type="range"].te-fader::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 20px;
    background: linear-gradient(to right, #ff4f00 45%, #ffffff 45%, #ffffff 55%, #ff4f00 55%);
    border-radius: 1px;
    border: 1px solid #cc3c00;
    box-shadow: 
        0 2px 4px rgba(0,0,0,0.2), 
        inset 0 1px 0 rgba(255,255,255,0.3);
    cursor: pointer;
    margin-top: -8px; /* Centers the 20px thumb on the 4px track */
}

/* Firefox fader track */
input[type="range"].te-fader::-moz-range-track {
    height: 4px;
    background: #d8d6cf;
    border: 1px solid #bfbcb2;
    border-radius: 1px;
    box-shadow: inset 0 1px 1px rgba(0,0,0,0.12);
}

/* Firefox fader cap */
input[type="range"].te-fader::-moz-range-thumb {
    width: 12px;
    height: 20px;
    background: linear-gradient(to right, #ff4f00 45%, #ffffff 45%, #ffffff 55%, #ff4f00 55%);
    border-radius: 1px;
    border: 1px solid #cc3c00;
    box-shadow: 
        0 2px 4px rgba(0,0,0,0.2), 
        inset 0 1px 0 rgba(255,255,255,0.3);
    cursor: pointer;
    box-sizing: border-box;
}

label {
    font-family: var(--font-din);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-main);
}

/* DIGITAL WATCH DISPLAY FOR SIZE INDICATOR */
.length-val {
    font-family: 'Share Tech Mono', 'Space Mono', monospace;
    font-weight: 400;
    color: #e5e7eb;
    background: #0a0a0a;
    border: 1px solid #222;
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.95rem;
    box-shadow: inset 0 2px 6px rgba(0,0,0,0.8);
    text-shadow: 0 0 4px rgba(255, 255, 255, 0.2);
    min-width: 32px;
    text-align: center;
    letter-spacing: 0.05em;
    display: inline-block;
    position: relative;
}

/* MINIMAL CHECKBOX CHIPS */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 28px;
    /* Unified TE Orange indicator color for all keycaps in light mode */
    --te-color: #ff4f00;
    --te-glow: rgba(255, 79, 0, 0.65);
    --te-glow-hover: rgba(255, 79, 0, 0.8);
}

/* TE Color Coding - Backlit Silicone Colors (Only in Dark Mode per user request) */
body.dark-theme .checkbox-grid .custom-checkbox:nth-child(1) { --te-color: #007aff; --te-glow: rgba(0, 122, 255, 0.65); --te-glow-hover: rgba(0, 122, 255, 0.8); } /* Blue */
body.dark-theme .checkbox-grid .custom-checkbox:nth-child(2) { --te-color: #10b981; --te-glow: rgba(16, 185, 129, 0.65); --te-glow-hover: rgba(16, 185, 129, 0.8); } /* Green */
body.dark-theme .checkbox-grid .custom-checkbox:nth-child(3) { --te-color: #ffcc00; --te-glow: rgba(255, 204, 0, 0.65); --te-glow-hover: rgba(255, 204, 0, 0.8); } /* Yellow */
body.dark-theme .checkbox-grid .custom-checkbox:nth-child(4) { --te-color: #ff4f00; --te-glow: rgba(255, 79, 0, 0.65); --te-glow-hover: rgba(255, 79, 0, 0.8); } /* Orange */

.custom-checkbox {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: #ffffff; /* Matte white keycap body when inactive */
    border: 1px solid var(--control-border);
    border-radius: 2px;
    cursor: pointer;
    user-select: none;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
    font-family: var(--font-din);
    font-size: 0.85rem;
    font-weight: 700; /* Crisp TE label weight */
    color: var(--text-main);
    text-transform: none;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 var(--border),
        inset 0 1px 0 #ffffff;
}

.custom-checkbox:hover {
    background: #fcfbf7;
}

.custom-checkbox:active {
    transform: translateY(2px);
    box-shadow: 
        0 1px 0 var(--border),
        inset 0.5px 1.5px 3px rgba(0,0,0,0.12);
}

.custom-checkbox input {
    display: none;
}

.checkmark {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #bfbcb2; /* Recessed off mechanical indicator */
    box-shadow: inset 0 1px 1px rgba(0,0,0,0.4);
    transition: all 0.15s ease;
    flex-shrink: 0;
}

/* Colorless Keycaps when Active (Checked) - LIGHT THEME */
.checkbox-grid .custom-checkbox:has(input:checked) {
    transform: translateY(2px);
    background-color: #ffffff !important;
    color: var(--text-main) !important;
    border-color: var(--control-border) !important;
    box-shadow: 
        0 1px 0 var(--border),
        inset 0 1.5px 3px rgba(0, 0, 0, 0.12) !important;
    text-shadow: none !important;
}

/* Change checkmark dot into a glowing colored LED indicator when active */
.checkbox-grid .custom-checkbox:has(input:checked) .checkmark {
    background: var(--te-color, var(--accent)) !important;
    box-shadow: 
        0 0 4px var(--te-color),
        inset 0 0.5px 0.5px rgba(255, 255, 255, 0.45) !important;
}

/* Translucent Silicone/Rubber Backlit Keycap when Active (Checked) - DARK THEME */
body.dark-theme .checkbox-grid .custom-checkbox:has(input:checked) {
    transform: translateY(2px);
    background-color: var(--te-color, #ff4f00) !important;
    background-image: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.25) 0%, transparent 80%) !important;
    color: #121318 !important;
    border-color: rgba(0, 0, 0, 0.2) !important;
    box-shadow: 
        0 0 8px var(--te-glow, rgba(255, 79, 0, 0.45)),
        0 1px 0 #13151a,
        inset 0 1.5px 3px rgba(0, 0, 0, 0.4) !important;
    filter: brightness(0.85); /* Matte organic glow instead of blinding neon */
    text-shadow: none;
}

/* Hover state for checked silicone keycaps */
body.dark-theme .checkbox-grid .custom-checkbox:has(input:checked):hover {
    filter: brightness(1.1);
}

body.dark-theme .checkbox-grid .custom-checkbox:has(input:checked) .checkmark {
    background: #121318 !important;
    border-color: #121318 !important;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.5) !important;
}

/* Disable battery dimming on checkboxes in dark theme so they stay full opacity/brightness */
body.dark-theme.battery-mode .custom-checkbox {
    opacity: 1 !important;
    filter: none !important;
}

body.dark-theme.battery-mode .checkbox-grid .custom-checkbox:has(input:checked) {
    background-color: #282c37 !important;
    background-image: none !important;
    color: #f1f5f9 !important;
    border-color: #3a3f4f !important;
    box-shadow: 
        0 1px 0 #13151a,
        inset 0 1.5px 3px rgba(0, 0, 0, 0.4) !important;
    filter: none !important;
}

body.dark-theme.battery-mode .checkbox-grid .custom-checkbox:has(input:checked) .checkmark {
    background: var(--te-color) !important;
    border-color: var(--te-color) !important;
    box-shadow: 0 0 6px var(--te-glow) !important;
}

/* In sleep mode, checkboxes and their checkmarks (toggle indicators) dim down */
body.device-sleeping.dark-theme.battery-mode .custom-checkbox {
    opacity: 0.22 !important;
    filter: brightness(0.35) grayscale(0.4) !important;
    box-shadow: none !important;
}

body.device-sleeping.dark-theme.battery-mode .checkbox-grid .custom-checkbox:has(input:checked) .checkmark {
    box-shadow: none !important;
}

/* General checkmark sleep state to kill any glowing box-shadows */
body.device-sleeping .custom-checkbox .checkmark {
    box-shadow: none !important;
}


/* BUTTONS */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-primary {
    background: var(--text-main);
    color: #ffffff;
    font-family: var(--font-din);
    font-size: 0.8rem;
    font-weight: 700 !important; /* Crisp TE weight */
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 12px;
    border-radius: 2px;
    border: 1px solid var(--control-border);
    cursor: pointer;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #8b8883,
        inset 0 1px 0 rgba(255,255,255,0.15);
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}

.btn-primary:hover {
    background: #243547;
}

.btn-primary:active {
    transform: translateY(2px);
    box-shadow: 
        0 1px 0 #8b8883,
        inset 0 1.5px 3px rgba(0,0,0,0.3);
}

/* PURGE BUFFER BUTTON - LIGHT MODE (Solid orange for high contrast on warm grey chassis) */
.btn-primary.btn-purge {
    background: var(--accent) !important;
    color: #ffffff !important;
    text-shadow: none !important;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #cc3c00,
        inset 0 1px 0 rgba(255,255,255,0.25) !important;
    border: 1px solid rgba(0, 0, 0, 0.15) !important;
    outline: none !important;
    font-weight: 700 !important;
}

.btn-primary.btn-purge:hover {
    background: #e04500 !important; /* Slightly darker orange */
}

.btn-primary.btn-purge:active {
    transform: translateY(2px) !important;
    box-shadow: 
        0 1px 0 #cc3c00,
        inset 0 1.5px 3px rgba(0,0,0,0.3) !important;
    background: #c73d00 !important;
}

/* PURGE BUFFER BUTTON - DARK MODE (Glowing outline on charcoal chassis) */
body.dark-theme .btn-primary.btn-purge {
    background: transparent !important;
    color: var(--accent) !important;
    text-shadow: 0 0 8px rgba(255, 79, 0, 0.6) !important;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #0f1013,
        inset 0 0 0 2px var(--accent) !important;
    border: none !important;
    outline: none !important;
    font-weight: 700 !important;
}

body.dark-theme .btn-primary.btn-purge:hover {
    background: rgba(255, 79, 0, 0.1) !important;
}

body.dark-theme .btn-primary.btn-purge:active {
    transform: translateY(2px) !important;
    box-shadow: 
        0 1px 0 #0f1013,
        inset 0 0 0 2px var(--accent),
        inset 0 1.5px 3px rgba(0,0,0,0.5) !important;
    background: rgba(255, 79, 0, 0.2) !important;
}

.btn-primary.btn-purge:focus,
body.dark-theme .btn-primary.btn-purge:focus,
.btn-primary.btn-purge:focus-visible,
body.dark-theme .btn-primary.btn-purge:focus-visible {
    outline: none !important;
}

.btn-secondary {
    background: #ffffff !important;
    color: var(--text-main) !important;
    font-family: var(--font-din);
    font-size: 0.8rem;
    font-weight: 700 !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 12px;
    border-radius: 2px;
    border: 1px solid var(--control-border) !important;
    cursor: pointer;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #bfbcb2,
        inset 0 1px 0 #ffffff !important;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}

.btn-secondary:hover {
    background: #fcfbf7 !important;
}

.btn-secondary:active {
    transform: translateY(2px) !important;
    box-shadow: 
        0 1px 0 #bfbcb2,
        inset 0 1.5px 3px rgba(0,0,0,0.12) !important;
}



.modal-overlay {
    position: fixed;
    inset: 0;
    background: transparent !important;
    display: none;
    z-index: 100;
    opacity: 0;
}

.modal-overlay.active {
    display: block;
    animation: fadeInOverlay 0.2s ease forwards;
}

.modal-overlay.closing {
    display: block;
    animation: fadeOutOverlay 0.2s ease forwards;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 15, 20, 0.4);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
    z-index: 1;
    pointer-events: none;
}

.modal-noise {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.05;
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: 3;
}

.modal-flex-container {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
    padding: 20px;
    overflow-y: auto;
    pointer-events: none;
}

@keyframes fadeInOverlay {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOutOverlay {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.modal-box {
    background: var(--chassis-top);
    border: 1px solid var(--control-border);
    border-radius: 2px;
    padding: 28px;
    width: 100%;
    max-width: 400px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    font-family: var(--font-din);
    box-shadow: 
        0 8px 0 #aba9a3,
        0 12px 24px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.5);
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.subtle-link {
    font-family: 'Space Grotesk', var(--font-din);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
    opacity: 0.6;
    display: inline-block;
}
.subtle-link:hover {
    color: var(--accent);
    opacity: 1;
}

.spec-box {
    max-width: 420px !important;
    padding: 28px;
    position: relative;
}

.spec-header {
    text-align: left;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
    margin-top: 10px;
}

.spec-header h1 {
    margin-bottom: 14px;
}

.specs-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px dashed var(--border);
    padding-bottom: 6px;
}

.spec-label {
    font-family: 'Space Grotesk', var(--font-din);
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
}

.spec-value {
    font-family: 'Space Mono', monospace;
    font-size: 0.78rem;
    color: var(--text-main);
    text-align: right;
}



.modal-box * {
    position: relative;
    z-index: 2;
}

.modal-box h2 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
    font-weight: normal;
}

.modal-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 20px;
    line-height: 1.4;
    letter-spacing: 0.01em;
}

.advanced-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: normal;
}

.advanced-group {
    background: #d8d6cf; /* Recessed slot background */
    border: 1px solid var(--control-border);
    border-radius: 2px;
    padding: 14px 16px;
    margin-bottom: 24px;
    box-shadow: inset 0 1.5px 3.5px rgba(0,0,0,0.15);
}

/* TE Industrial Typography */
.te-modal-title {
    font-family: 'Fira Code', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-main);
    margin: 0;
    letter-spacing: 0.05em;
}

.te-modal-desc {
    font-family: 'Fira Code', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    margin: 4px 0 0 0;
    letter-spacing: 0.1em;
}

.te-section-title {
    font-family: 'Fira Code', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    margin-bottom: 8px;
    margin-left: 2px;
}

.te-btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: 'Fira Code', monospace;
    padding: 6px 12px;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 0;
    transition: all 0.2s;
}
.te-btn-outline:hover {
    color: var(--text-main);
    border-color: var(--text-main);
}
.te-btn-outline.copied-active {
    color: var(--accent) !important;
    border-color: var(--accent) !important;
}

/* TE Mechanical Toggle */
.te-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 4px;
    cursor: pointer;
    border-bottom: 1px dashed var(--control-border);
}
.te-toggle:last-child {
    border-bottom: none;
}
.te-toggle-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.te-toggle-title {
    font-family: 'Space Grotesk', var(--font-din);
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.te-toggle-desc {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* Hardware Switch */
.te-switch {
    position: relative;
    width: 34px;
    height: 18px;
}
.te-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.te-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #c7c5be;
    border: 1px solid var(--control-border);
    transition: background-color 0.15s ease;
    border-radius: 2px;
    box-shadow: inset 0 1.5px 3px rgba(0,0,0,0.18);
    box-sizing: border-box;
}
.te-slider:before {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    height: 12px;
    width: 12px;
    background-color: #ffffff;
    border: 1px solid #bfbcb2;
    transition: transform 0.12s cubic-bezier(0.25, 1, 0.5, 1);
    border-radius: 1px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.15);
    box-sizing: border-box;
}
.te-switch input:checked + .te-slider {
    background-color: var(--accent) !important;
    border-color: rgba(0,0,0,0.15) !important;
}
.te-switch input:checked + .te-slider:before {
    transform: translateX(16px);
    border-color: rgba(0,0,0,0.15);
}

/* Terminal Input */
.te-input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 8px 4px;
    border-bottom: 1px dashed var(--control-border);
}
.te-input-group:last-child {
    border-bottom: none;
}
.te-input-label {
    font-family: 'Space Grotesk', var(--font-din);
    font-weight: 700;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.te-input-wrapper {
    display: flex;
    align-items: center;
}
.te-prompt {
    font-family: 'Space Mono', monospace;
    color: var(--accent);
    margin-right: 8px;
    font-size: 0.85rem;
}
.te-terminal-input {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    width: 100%;
    outline: none;
}
.te-terminal-input::placeholder {
    color: rgba(255,255,255,0.2);
}

/* Hardware Buttons */
.te-btn-hazard {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: 'Fira Code', monospace;
    padding: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 14px;
    border-radius: 2px;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 var(--accent),
        inset 0 1px 0 #ffffff;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}
.te-btn-hazard:hover {
    background: #fffcfb;
}
.te-btn-hazard:active {
    transform: translateY(2px);
    box-shadow: 
        0 1px 0 var(--accent),
        inset 1.5px 1.5px 3px rgba(255, 79, 0, 0.15) !important;
}
.te-btn-commit {
    width: 100%;
    background: var(--text-main);
    border: 1px solid var(--control-border);
    color: #ffffff;
    font-family: 'Fira Code', monospace;
    padding: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    border-radius: 2px;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #8b8883,
        inset 0 1px 0 rgba(255,255,255,0.15);
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}
.te-btn-commit:hover {
    background: #243547;
}
.te-btn-commit:active {
    transform: translateY(2px);
    box-shadow: 
        0 1px 0 #8b8883,
        inset 1.5px 1.5px 3px rgba(0,0,0,0.3) !important;
}
.te-link {
    font-family: 'Fira Code', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: none;
    letter-spacing: 0.1em;
}
.te-link:hover {
    color: var(--text-main);
    text-decoration: underline;
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.preset-btn {
    background: #ffffff;
    border: 1px solid var(--border);
    color: var(--text-main);
    border-radius: 2px;
    padding: 8px 12px;
    font-family: var(--font-din);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 2px) 0 var(--border),
        inset 0 1px 0 #ffffff;
}

.settings-checkbox {
    padding: 6px 12px;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

.preset-btn:hover {
    border-color: var(--text-main);
}

.preset-btn:active {
    transform: translateY(1.5px);
    box-shadow: 
        0 0.5px 0 var(--border),
        inset 1.5px 1.5px 2px rgba(0,0,0,0.12) !important;
}

.preset-btn.active {
    transform: translateY(1.5px);
    background: var(--text-main) !important;
    color: #ffffff !important;
    border-color: var(--text-main) !important;
    box-shadow: 
        0 0.5px 0 var(--border),
        inset 1.5px 1.5px 2.5px rgba(0,0,0,0.3) !important;
}

.preset-explanations {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
    padding: 14px;
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--control-border);
    border-radius: 3px;
    font-family: 'Space Mono', monospace;
}
body.dark-theme .preset-explanations {
    background: rgba(255, 255, 255, 0.015);
    border-color: rgba(255, 255, 255, 0.05);
}
@media (max-width: 600px) {
    .preset-explanations {
        display: none !important;
    }
}
.preset-desc-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.preset-desc-title {
    font-family: 'Space Grotesk', var(--font-din);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}
.preset-desc-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    line-height: 1.35;
    color: var(--text-muted);
}

input[type="text"] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    outline: none;
    border-radius: 2px;
    background: #ffffff;
    color: var(--text-main);
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.06);
}

input[type="text"]:focus {
    border-color: var(--border-focus);
}

/* DARK MODE CHASSIS LED GLOW STYLES */
body {
    transition: background-color 0.4s ease;
}

html.dark-theme,
body.dark-theme {
    /* Transform device chassis variables to premium matte-charcoal anodized metal */
    --bg-main: #0a0b0d;
    --chassis-top: #1f222b;
    --chassis-bottom: #13151a;
    --control-border: #2a2e3b;
    --text-main: #f1f5f9;
    --text-muted: #64748b;
    --text-japanese: #ff4f00; /* Bright orange pop for the Japanese branding */
    --border: #3a3f4f;

    /* Background dot grid pattern for technical laboratory workbench aesthetic */
    background-color: #0a0b0d;
    background-image: radial-gradient(#1f2430 1px, transparent 1px);
    background-size: 16px 16px;
}

body.dark-theme h1 {
    color: #ffffff;
}

body.dark-theme .modal-box {
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow: 
        0 8px 0 #12141c,
        0 12px 24px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
}

/* Checkbox (keycaps) styling for Dark Edition */
body.dark-theme .custom-checkbox {
    background: #282c37;
    color: #f1f5f9;
    border: 1px solid #3a3f4f;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #13151a,
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    text-shadow: none; /* No fuzzy text glows */
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}

body.dark-theme .custom-checkbox:hover {
    background: #2f3442;
    border-color: #555d73;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #13151a,
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

body.dark-theme .custom-checkbox:active {
    transform: translateY(2px);
    box-shadow: 
        0 1px 0 #13151a,
        inset 1.5px 1.5px 3px rgba(0, 0, 0, 0.4);
}

/* Dimmer borders in dark mode to blend with OLED display and remove "sketch" look */
body.dark-theme header,
body.dark-theme .controls-area {
    border-color: rgba(255, 255, 255, 0.06);
}
body.dark-theme header {
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
body.dark-theme .controls-area {
    box-shadow: 
        inset 0 1px 0px rgba(255,255,255,0.02),
        inset 0 -1px 0px rgba(0,0,0,0.3);
}

/* Primary Button (Run Generation) - High Contrast Solid White Keycap style */
body.dark-theme .btn-primary {
    background: #ffffff;
    color: #121318;
    border: 1px solid #0f1013;
    font-weight: 700 !important;
    box-shadow: 
        0 3px 0 #0f1013,
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    text-shadow: none;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}

body.dark-theme .btn-primary:hover {
    background: #e2e8f0;
}

body.dark-theme .btn-primary:active {
    transform: translateY(2px);
    box-shadow: 
        0 1px 0 #0f1013,
        inset 1.5px 1.5px 3px rgba(0, 0, 0, 0.4);
}

/* Secondary Button (Filters & Presets) - Dark Translucent keycap with white border */
body.dark-theme .btn-secondary {
    background: #282c37 !important;
    color: #f1f5f9 !important;
    border: 1px solid #3a3f4f !important;
    font-weight: 700 !important;
    box-shadow: 
        0 3px 0 #0f1013,
        inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
    text-shadow: none;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}

body.dark-theme .btn-secondary:hover {
    background: #2f3442 !important;
    border-color: #555d73 !important;
    color: #ffffff !important;
}

body.dark-theme .btn-secondary:active {
    transform: translateY(2px) !important;
    box-shadow: 
        0 1px 0 #0f1013,
        inset 1.5px 1.5px 3px rgba(0, 0, 0, 0.5) !important;
}

/* Segmented mode switch capsule */
body.dark-theme .mode-capsule {
    background: #0f1013;
    border-color: #2a2e3b;
    box-shadow: inset 0 1.5px 3.5px rgba(0,0,0,0.6);
}

body.dark-theme .mode-btn {
    background: #181b22 !important;
    color: #64748b !important;
    box-shadow: 0 2px 0 #13151a, inset 0 1px 0 rgba(255,255,255,0.03);
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease, color 0.15s ease;
}

body.dark-theme .mode-btn.active {
    background: #282c37 !important;
    color: #ffffff !important;
    transform: translateY(1.5px);
    box-shadow: 
        0 0.5px 0 #13151a,
        inset 0 1px 2px rgba(0,0,0,0.4) !important;
}



/* Fader container slot styling */
body.dark-theme .fader-container {
    background: transparent;
    border: none;
    box-shadow: none;
}

body.dark-theme .fader-container::after {
    background-image: linear-gradient(to right, rgba(255,255,255,0.08) 1px, transparent 1px);
}

body.dark-theme input[type="range"].te-fader::-webkit-slider-runnable-track {
    background: #0f1013;
    border-color: #2a2e3b;
    box-shadow: inset 0 1.5px 2px rgba(0,0,0,0.6);
}

body.dark-theme input[type="range"].te-fader::-moz-range-track {
    background: #0f1013;
    border-color: #2a2e3b;
    box-shadow: inset 0 1.5px 2px rgba(0,0,0,0.6);
}

/* Preset buttons in modal matrix */
body.dark-theme .preset-btn {
    background: #282c37;
    color: #f1f5f9;
    border-color: #3a3f4f;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 2px) 0 #0f1013,
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
}

body.dark-theme .preset-btn:hover {
    border-color: #555d73;
    background: #2f3442;
}

body.dark-theme .preset-btn.active {
    transform: translateY(1.5px);
    background: #ffffff !important;
    color: #121318 !important;
    border-color: #ffffff !important;
    box-shadow: 
        0 0.5px 0 #0f1013,
        inset 1.5px 1.5px 2.5px rgba(0, 0, 0, 0.3) !important;
}

body.dark-theme .advanced-group {
    background: #13151a;
    border-color: #2a2e3b;
    box-shadow: inset 0 1.5px 3.5px rgba(0,0,0,0.6);
}

/* Technical inputs inside advanced matrices */
body.dark-theme input[type="text"] {
    background: #13151a;
    border-color: #3a3f4f;
    color: #f1f5f9;
    box-shadow: inset 0 1px 2.5px rgba(0, 0, 0, 0.5);
}

body.dark-theme input[type="text"]:focus {
    border-color: #555d73;
}

body.dark-theme .te-slider {
    background-color: #0f1013;
    border-color: #3a3f4f;
    box-shadow: inset 0 1.5px 3px rgba(0,0,0,0.5);
}

body.dark-theme .te-slider:before {
    background-color: #282c37;
    border-color: #3a3f4f;
    box-shadow: 0 1.5px 3px rgba(0,0,0,0.4);
}

body.dark-theme .te-switch input:checked + .te-slider {
    background-color: var(--accent) !important;
    border-color: rgba(0,0,0,0.2) !important;
}

body.dark-theme .te-switch input:checked + .te-slider:before {
    background-color: #ffffff !important;
    border-color: rgba(0,0,0,0.2) !important;
}

body.dark-theme .te-btn-hazard {
    background: #282c37 !important;
    border-color: var(--accent) !important;
    color: var(--accent) !important;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #0f1013,
        inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
}

body.dark-theme .te-btn-hazard:hover {
    background: #2f3442 !important;
}

body.dark-theme .te-btn-hazard:active {
    transform: translateY(2px) !important;
    box-shadow: 
        0 1px 0 #0f1013,
        inset 1.5px 1.5px 3px rgba(0, 0, 0, 0.5) !important;
}

body.dark-theme .te-btn-commit {
    background: #ffffff !important;
    color: #121318 !important;
    border-color: #0f1013 !important;
    box-shadow: 
        var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #0f1013,
        inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
}

body.dark-theme .te-btn-commit:hover {
    background: #e2e8f0 !important;
}

body.dark-theme .te-btn-commit:active {
    transform: translateY(2px) !important;
    box-shadow: 
        0 1px 0 #0f1013,
        inset 1.5px 1.5px 3px rgba(0, 0, 0, 0.4) !important;
}

/* --- SKEUOMORPHIC HARDWARE POWER TOGGLE SWITCH & MOBILE OPTIMIZATIONS --- */
.power-switch-chassis {
    position: absolute;
    right: -13px; /* sticks out from container border */
    top: 130px; /* aligns next to the OLED screen */
    width: 14px;
    height: 54px;
    background: var(--chassis-bottom); /* matches warm gray chassis */
    border: 1px solid var(--control-border);
    border-left: none;
    border-radius: 0 5px 5px 0;
    box-shadow: 
        2px 2px 4px rgba(0,0,0,0.1),
        inset 0 1px 0 rgba(255,255,255,0.4);
    z-index: 5;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 5px 0;
    transition: background-color 0.4s ease, border-color 0.4s ease;
}

body.dark-theme .power-switch-chassis {
    background: #1f222b;
    border-color: #2a2e3b;
    box-shadow: 
        2px 2px 5px rgba(0,0,0,0.35),
        inset 0 1px 0 rgba(255,255,255,0.05);
}

.power-label-top, .power-label-bottom {
    font-family: var(--font-din);
    font-size: 7px;
    font-weight: 700;
    color: var(--text-muted);
    user-select: none;
    line-height: 1;
}

body.dark-theme .power-label-top,
body.dark-theme .power-label-bottom {
    color: #64748b;
}

.power-switch-groove {
    width: 6px;
    height: 30px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 3px;
    position: relative;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.5);
    overflow: hidden;
}

.power-switch-knob {
    width: 6px;
    height: 14px;
    background: var(--accent); /* TE Orange */
    border-radius: 2px;
    position: absolute;
    left: 0;
    top: 0; /* default ON (up) */
    box-shadow: 
        0 1px 2px rgba(0,0,0,0.35),
        inset 0 1px 0 rgba(255,255,255,0.4);
    transition: transform 0.15s cubic-bezier(0.25, 0.8, 0.25, 1.25), background-color 0.4s ease;
}

.power-switch-knob.off {
    transform: translateY(16px); /* travel down for OFF */
    background: #6b7280; /* dull gray when unpowered */
    box-shadow: 
        0 1px 1px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

body.dark-theme .power-switch-knob.off {
    background: #3e4456;
}

/* --- POWER STATE (OFF) RULES --- */
.container.device-off .output-section {
    background: #000000 !important;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45) !important;
    pointer-events: none;
}

.container.device-off #generated-password {
    color: transparent !important;
    text-shadow: none !important;
}

.container.device-off #oled-canvas,
.container.device-off #oled-overlay {
    opacity: 0 !important;
}

.container.device-off #strength-fill {
    background: #000000 !important;
    width: 0% !important;
}

.container.device-off #strength-text,
.container.device-off #strength-feedback,
.container.device-off .strength-meta span {
    color: transparent !important;
    text-shadow: none !important;
}

.container.device-off .strength-bar {
    background: #000000 !important;
}

.container.device-off .length-val {
    background: #000000 !important;
    color: transparent !important;
    border-color: #000000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
}

.container.device-off .checkmark {
    background: #000000 !important;
    box-shadow: none !important;
    border-color: #000000 !important;
}

.container.device-off .controls-area {
    pointer-events: none;
}

/* Gray out checkbox buttons in OFF state for both themes */
.container.device-off .custom-checkbox {
    color: rgba(0, 0, 0, 0.25) !important;
    background: #d1d5db !important;
    border-color: #b5babf !important;
    box-shadow: none !important;
    transform: none !important;
}

body.dark-theme .container.device-off .custom-checkbox {
    color: #1e293b !important;
    background: #1e293b !important;
    border-color: #0f172a !important;
    box-shadow: none !important;
    transform: none !important;
}

/* Force glowing checked checkmarks off */
.container.device-off .custom-checkbox input:checked + .checkmark {
    background: #7c7a76 !important;
    box-shadow: inset 0 1px 1px rgba(0,0,0,0.5) !important;
}

/* Turn off dark mode checked keycap glows */
body.dark-theme .container.device-off .checkbox-grid .custom-checkbox:has(input:checked) {
    background-color: #1e293b !important;
    background-image: none !important;
    color: #475569 !important;
    border-color: #0f172a !important;
    box-shadow: none !important;
    text-shadow: none !important;
    transform: none !important;
}

body.dark-theme .container.device-off .checkbox-grid .custom-checkbox:has(input:checked) .checkmark {
    background: #0f172a !important;
    border-color: #0f172a !important;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.5) !important;
}



/* Disable generating button colors */
.container.device-off .btn-primary {
    background: #9ca3af !important;
    color: #4b5563 !important;
    box-shadow: none !important;
    transform: none !important;
}

body.dark-theme .container.device-off .btn-primary {
    background: #1e293b !important;
    color: #475569 !important;
    box-shadow: none !important;
    transform: none !important;
}

.container.device-off .btn-secondary {
    background: #9ca3af !important;
    color: #4b5563 !important;
    border-color: #9ca3af !important;
    box-shadow: none !important;
    transform: none !important;
}

body.dark-theme .container.device-off .btn-secondary {
    background: #1e293b !important;
    color: #475569 !important;
    border-color: #0f172a !important;
    box-shadow: none !important;
    transform: none !important;
}

.container.device-off .mode-btn {
    color: rgba(0, 0, 0, 0.25) !important;
}

body.dark-theme .container.device-off .mode-btn {
    color: #475569 !important;
}

.container.device-off .mode-btn.active {
    background: transparent !important;
    box-shadow: none !important;
}

.container.device-off input[type="range"].te-fader::-webkit-slider-thumb {
    background: #9ca3af !important;
    border-color: #9ca3af !important;
    box-shadow: none !important;
}

.container.device-off input[type="range"].te-fader::-moz-range-thumb {
    background: #9ca3af !important;
    border-color: #9ca3af !important;
    box-shadow: none !important;
}

/* --- BOOT FLICKERING STYLES --- */
.container.device-flicker-off .output-section {
    background: #000000 !important;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45) !important;
}
.container.device-flicker-off #generated-password {
    color: transparent !important;
    text-shadow: none !important;
}
.container.device-flicker-off #oled-canvas,
.container.device-flicker-off #oled-overlay {
    opacity: 0 !important;
}
.container.device-flicker-off #strength-fill {
    background: #000000 !important;
    width: 0% !important;
}
.container.device-flicker-off #strength-text,
.container.device-flicker-off #strength-feedback,
.container.device-flicker-off .strength-meta span {
    color: transparent !important;
    text-shadow: none !important;
}
.container.device-flicker-off .length-val {
    background: #000000 !important;
    color: transparent !important;
    border-color: #000000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
}

/* --- MOBILE RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 480px) {
    body {
        padding: 16px 20px; /* Space on left/right so side switch is fully visible */
    }
    
    .container-wrapper {
        max-width: 100%;
    }
    
    header {
        padding: 20px 24px 16px 24px; /* Restored tighter padding since decals are hidden */
    }
    
    /* Hide printed model text on mobile for more space and cleaner look */
    header::before {
        display: none !important;
    }
    .te-header-decal-link {
        display: none !important;
    }
    
    /* Align speaker dots grid to responsive margins */
    .speaker-grille {
        right: 24px;
        top: 20px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .output-section {
        height: 124px; /* Shorter screen height to fit on smaller displays */
        padding: 14px 24px;
    }
    
    #generated-password {
        height: 48px;
        line-height: 1.25;
        padding: 4px 12px;
        margin-bottom: 8px;
        font-size: 1.15rem;
    }
    
    /* Compact strength indicators to prevent display height clipping */
    .strength-wrapper {
        padding-top: 4px;
        gap: 4px;
    }
    
    #strength-feedback {
        min-height: 18px;
        font-size: 0.58rem;
        line-height: 1.2;
    }
    
    .strength-meta {
        font-size: 0.65rem;
    }
    
    .controls-area {
        padding: 20px 24px 20px 24px; /* Reduced bottom padding since decals are hidden */
    }
    
    /* Hide printed bottom chassis decals on mobile to prevent overlap and let layout breathe */
    .controls-area::before {
        display: none !important;
    }
    .controls-area::after {
        display: none !important;
    }
    
    .mode-capsule {
        margin-bottom: 16px;
    }
    
    .checkbox-grid {
        margin-bottom: 20px;
    }
    
    .custom-checkbox {
        padding: 8px 10px;
        font-size: 0.8rem;
    }
    
    .btn-primary {
        padding: 12px;
        font-size: 0.8rem;
    }
    
    .btn-secondary {
        padding: 10px;
        font-size: 0.75rem;
    }
    
    .power-switch-chassis {
        right: -10px; /* Bring inward slightly if screen edges are tight */
    }
    
    /* Position screws closer to the chassis edges for a roomier look */
    .screw.top-left { top: 6px; left: 6px; }
    .screw.top-right { top: 6px; right: 6px; }
    .screw.bottom-left { bottom: 6px; left: 6px; }
    .screw.bottom-right { bottom: 6px; right: 6px; }
}

@media (max-width: 360px) {
    body {
        padding: 12px 14px;
    }
    
    header {
        padding: 16px 18px 12px 18px; /* Tight safe padding */
    }
    
    .speaker-grille {
        right: 18px;
        top: 16px;
    }
    
    .output-section {
        height: 116px;
        padding: 10px 18px;
    }
    
    #generated-password {
        height: 44px;
        font-size: 1rem;
        line-height: 1.2;
        margin-bottom: 6px;
    }
    
    /* Ultra-compact strength indicators for iPhone SE sizes */
    .strength-wrapper {
        padding-top: 2px;
        gap: 2px;
    }
    
    #strength-feedback {
        min-height: 14px;
        font-size: 0.52rem;
        line-height: 1.15;
    }
    
    .strength-meta {
        font-size: 0.58rem;
    }
    
    .controls-area {
        padding: 16px 18px 16px 18px; /* Tighter padding */
    }
    
    .checkbox-grid {
        gap: 6px;
        margin-bottom: 12px;
    }
    
    .custom-checkbox {
        padding: 6px 8px;
        font-size: 0.75rem;
    }
    
    .preset-btn {
        font-size: 0.72rem;
        padding: 6px 8px;
    }
    
    .power-switch-chassis {
        right: -8px;
    }
    
    /* Position screws extremely close to corners on tiny displays */
    .screw.top-left { top: 4px; left: 4px; }
    .screw.top-right { top: 4px; right: 4px; }
    .screw.bottom-left { bottom: 4px; left: 4px; }
    .screw.bottom-right { bottom: 4px; right: 4px; }
}

/* --- SKEUOMORPHIC BRAIDED POWER CABLE (LEFT SIDE PLUG-IN) --- */
.braided-cable-container {
    position: absolute;
    top: 140px; /* Aligns vertically with display section */
    right: 100%; /* Starts exactly at left edge of the device */
    margin-right: -10px; /* Overlaps device by 10px so the tip goes inside */
    width: 2000px; /* Extends infinitely to the left */
    height: 600px;
    pointer-events: none;
    z-index: 5; /* overlays container bezel so plug is on top */
}

/* Cable Gradient Stoppings (Beige/Grey in light theme, Charcoal/Graphite in dark theme) */
.cable-stop-1 {
    stop-color: #d1d5db;
    transition: stop-color 0.4s ease;
}
.cable-stop-2 {
    stop-color: #f6f4ee;
    transition: stop-color 0.4s ease;
}

body.dark-theme .cable-stop-1 {
    stop-color: #2a2e3b;
}
body.dark-theme .cable-stop-2 {
    stop-color: #1f222b;
}

/* Braided Stitches colors */
.cable-dark-braid {
    stroke: #7c7a76;
    opacity: 0.45;
    transition: stroke 0.4s ease;
}
body.dark-theme .cable-dark-braid {
    stroke: #13151a;
    opacity: 0.6;
}

.cable-light-braid {
    stroke: #ffffff;
    opacity: 0.4;
    transition: stroke 0.4s ease;
}
body.dark-theme .cable-light-braid {
    stroke: #64748b;
    opacity: 0.35;
}

/* Plug Socket Cutout on Device Side Bezel */
.plug-socket {
    fill: #0c0d12;
    stroke: var(--control-border);
    stroke-width: 0.8px;
    transition: stroke 0.4s ease;
}

/* Metal Tip inserted in socket */
.plug-metal-tip {
    fill: #9ca3af;
    transition: fill 0.4s ease;
}
body.dark-theme .plug-metal-tip {
    fill: #4b5563;
}

/* Plug Connector Housing */
.plug-housing {
    fill: #e5e7eb;
    stroke: #b5babf;
    stroke-width: 0.8px;
    transition: fill 0.4s ease, stroke 0.4s ease;
}

body.dark-theme .plug-housing {
    fill: #242835;
    stroke: #13151a;
}

/* Connector LED indicator */
.plug-led {
    fill: #10b981; /* Active power LED */
    filter: drop-shadow(0 0 3px rgba(16, 185, 129, 0.9));
}

/* Rubber Strain Relief */
.plug-relief {
    fill: #7c7a76;
    transition: fill 0.4s ease;
}

body.dark-theme .plug-relief {
    fill: #13151a;
}

.plug-rib-line {
    stroke: #4b5563;
    stroke-width: 1px;
    transition: stroke 0.4s ease;
}
body.dark-theme .plug-rib-line {
    stroke: #1c1f26;
}

/* Cable Interactive Unplug Animation */
#cable-and-plug {
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: auto; /* Required because container has pointer-events: none */
}

/* When plugging back in, delay the LED turning on */
#cable-and-plug:not(.disconnected) .plug-led {
    transition: fill 0.1s ease 0.4s, filter 0.1s ease 0.4s;
}
#cable-and-plug:not(.disconnected) .plug-floor-glow {
    transition: opacity 0.2s ease 0.4s;
}

#cable-and-plug.disconnected {
    transform: translateX(-40px);
}

#cable-and-plug.disconnected .plug-led {
    fill: #444 !important;
    filter: none !important;
    transition: fill 0.1s ease;
}

#cable-and-plug.disconnected .plug-floor-glow {
    opacity: 0 !important;
    transition: opacity 0.1s ease;
}

@media (max-width: 480px) {
    #cable-and-plug.disconnected {
        transform: translateX(-14px);
    }
}


.cable-shadow-path {
    stroke: rgba(0,0,0,0.1);
    transition: stroke 0.4s ease;
}
body.dark-theme .cable-shadow-path {
    stroke: rgba(0,0,0,0.35);
}

/* Make body hide horizontal overflow to prevent scrollbars from the sweeping cable */
body {
    overflow-x: hidden;
}

/* Prevent scroll chaining from modal to background */
body.modal-open {
    /* Removed overflow: hidden because it breaks iOS Safari bottom toolbar translucency */
}
@media (min-width: 601px) {
    body.modal-open {
        overflow: hidden !important;
    }
}

/* On mobile, completely hide the main app when a modal is open to ensure 0 background scrolling */
@media (max-width: 600px) {
    body.modal-open .container-wrapper {
        display: none !important;
    }
}

/* FULLSCREEN MODALS ON MOBILE */
@media (max-width: 600px) {
    .modal-overlay {
        padding: 0;
    }

    .modal-flex-container {
        padding: 0;
        align-items: flex-end; /* pop up from bottom */
    }

    .modal-box {
        width: 100%;
        height: 100dvh;
        max-height: 100dvh;
        max-width: none;
        border-radius: 0;
        border: none;
        background: var(--chassis-top);
        overflow-y: auto;
        padding-top: 0;
        padding-left: 0;
        padding-right: 0;
        padding-bottom: calc(env(safe-area-inset-bottom, 20px) + 80px);
    }
    
    body.dark-theme .modal-box {
        background: var(--bg-main);
    }
    
    .modal-header.sticky-header {
        position: relative;
        background: var(--bg-main);
        z-index: 10;
        display: flex;
        justify-content: space-between;
        align-items: center;
        /* Handle iOS notch/status bar gracefully */
        padding: calc(env(safe-area-inset-top, 16px) + 8px) 20px 16px 20px;
        border-bottom: 2px solid #ff4f00;
        margin-bottom: 24px;
        margin-top: 0;
        margin-left: 0;
        margin-right: 0;
        font-family: 'Courier New', monospace;
    }
    
    .modal-header.sticky-header.spec-header {
        padding-top: calc(env(safe-area-inset-top, 16px) + 32px);
    }

    .modal-title-te {
        font-weight: 800;
        letter-spacing: -0.5px;
        color: var(--text-main);
    }
    
    /* Hide desktop commit button, show native-style mobile Done button */
    .desktop-commit-btn {
        display: none !important;
    }
    .btn-done-mobile {
        display: inline-block;
        color: var(--text-main);
        font-family: 'Courier New', monospace;
        font-weight: 700;
        text-transform: uppercase;
        font-size: 0.8rem;
        cursor: pointer;
    }
    
    .modal-box > *:not(.sticky-header) {
        margin-left: 20px;
        margin-right: 20px;
        width: calc(100% - 40px) !important;
    }
}

/* Hide mobile elements on desktop */
@media (min-width: 601px) {
    .btn-done-mobile {
        display: none;
    }
    .modal-header.sticky-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
    }
}

/* --- PREFERS REDUCED MOTION OVERRIDES --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        animation-delay: 0s !important;
        transition-delay: 0s !important;
    }
}

/* --- TOUCH OPTIMIZATIONS: HIDE TOOLTIP --- */
@media (hover: none) {
    .custom-tooltip, #crack-time-tooltip {
        display: none !important;
    }
}

/* --- WORD SEPARATOR PRESETS SIZE --- */
.preset-btn.separator-btn {
    font-size: 0.7rem !important;
    padding: 6px 8px !important;
    min-width: 48px;
    text-align: center;
}

/* --- STICKY HEADER DESKTOP --- */
@media (min-width: 601px) {
    .modal-header.sticky-header {
        position: relative;
        background: var(--chassis-top);
        z-index: 10;
        margin-top: -28px;
        margin-left: -28px;
        margin-right: -28px;
        padding: 28px 28px 16px 28px;
        border-bottom: 2px solid #ff4f00;
        margin-bottom: 20px;
    }
}

/* --- COLLAPSIBLE advanced popup settings sections --- */
.te-section-title.collapsible-title {
    cursor: pointer;
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.15s ease;
}

.te-section-title.collapsible-title:hover {
    color: var(--accent);
}

.advanced-group.collapsed {
    display: none !important;
}

.toggle-indicator {
    font-family: 'Fira Code', monospace;
    font-size: 0.75rem;
    color: var(--accent);
}

/* --- ADVANCED SETTINGS LAYOUT OPTIMIZATIONS --- */
.advanced-group-stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.separator-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-top: 4px;
}

.modal-actions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 0;
}
.modal-actions-grid button {
    margin-bottom: 0 !important;
    width: 100% !important;
}

#session-log-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
}

/* Dividers & hover states */
.te-section-title.collapsible-title {
    margin-top: 16px;
}
.advanced-group + .te-section-title.collapsible-title {
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding-top: 20px;
    margin-top: 20px;
}
body.dark-theme .advanced-group + .te-section-title.collapsible-title {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.te-toggle {
    border-radius: 4px;
    padding: 8px 8px !important;
    margin: 0 -4px;
    transition: background-color 0.15s ease;
}
.te-toggle:hover {
    background: rgba(255, 255, 255, 0.45);
}
body.dark-theme .te-toggle:hover {
    background: rgba(255, 255, 255, 0.04);
}

/* --- SESSION LOG SYSTEM EVENTS COLORS --- */
.session-log-entry .log-warn {
    color: var(--accent) !important;
}
.session-log-entry .log-success {
    color: #0d9488 !important; /* teal/green for contrast in light mode */
}
body.dark-theme .session-log-entry .log-success {
    color: #10b981 !important; /* emerald green in dark mode */
}
.session-log-entry .log-info {
    color: #2563eb !important; /* blue in light mode */
}
body.dark-theme .session-log-entry .log-info {
    color: #3b82f6 !important; /* bright blue in dark mode */
}
.session-log-entry .log-pwr-on {
    color: #ff4f00 !important; /* Signature TE Orange */
}
.session-log-entry .log-pwr-off {
    color: #888888 !important; /* Muted stone grey in light mode */
}
body.dark-theme .session-log-entry .log-pwr-off {
    color: #62605b !important; /* Muted charcoal grey in dark mode */
}

/* --- TECHNICAL SPEC SHEET OVERVIEW, GUIDE & SECURITY SECTIONS --- */
.description-block {
    margin-top: 20px;
    margin-bottom: 24px;
    text-align: left;
}
.description-title {
    font-family: 'Space Grotesk', var(--font-din);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 8px;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.08);
    padding-bottom: 4px;
}
body.dark-theme .description-title {
    border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}
.description-text {
    font-size: 0.78rem;
    line-height: 1.5;
    color: var(--text-muted);
    margin: 0;
}
.te-inline-link {
    color: var(--text-muted) !important;
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 700;
    transition: color 0.15s ease;
}
.te-inline-link:hover {
    color: var(--accent) !important;
}
/* --- DONATION / SUPPORT SECTION STYLES --- */
.support-section {
    margin: 16px 0 24px 0;
    width: 100%;
    text-align: left;
}
.support-header {
    font-family: 'Space Grotesk', var(--font-din);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 8px;
    padding-bottom: 2px;
    border-bottom: 1px dashed rgba(255, 79, 0, 0.15);
    display: inline-block;
}
body.dark-theme .support-header {
    border-bottom-color: rgba(255, 79, 0, 0.3);
}
.te-btn-donate {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background: var(--accent);
    color: #ffffff;
    font-family: var(--font-din);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    padding: 12px 16px;
    border-radius: 2px;
    border: 1px solid var(--control-border);
    box-shadow: var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #8b8883, inset 0 1px 0 rgba(255,255,255,0.25);
    transition: transform 0.08s ease, box-shadow 0.08s ease, background-color 0.15s ease;
    cursor: pointer;
}
.te-btn-donate:hover {
    background: #e04500;
    color: #ffffff;
}
.te-btn-donate:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 #8b8883, inset 0 1.5px 3px rgba(0,0,0,0.3);
}

body.dark-theme .te-btn-donate {
    box-shadow: var(--shadow-x, 0px) var(--shadow-y, 3px) 0 #12141c, inset 0 1px 0 rgba(255,255,255,0.15);
}
body.dark-theme .te-btn-donate:active {
    box-shadow: 0 1px 0 #12141c, inset 0 1.5px 3px rgba(0,0,0,0.45);
}

/* --- STRUCTURED CARD GRID MANUALS --- */
.guide-grid, .security-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
    margin-bottom: 24px;
}
.guide-card, .security-card {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--control-border);
    border-radius: 3px;
    padding: 12px;
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    line-height: 1.5;
    color: var(--text-muted);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}
body.dark-theme .guide-card, body.dark-theme .security-card {
    background: rgba(255, 255, 255, 0.015);
    border-color: rgba(255, 255, 255, 0.05);
}



.guide-card-header, .security-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px dashed var(--control-border);
    padding-bottom: 6px;
    margin-bottom: 8px;
}
body.dark-theme .guide-card-header, body.dark-theme .security-card-header {
    border-bottom-color: rgba(255, 255, 255, 0.06);
}

.guide-tag, .security-tag {
    font-weight: 700;
    color: var(--accent);
    font-size: 0.65rem;
}

.guide-card-title, .security-card-title {
    font-family: var(--font-din);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-main);
}

.guide-shortcut {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.guide-card-bullets {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-top: 6px;
    padding-left: 4px;
    font-size: 0.68rem;
}
.guide-card-bullets em {
    font-style: normal;
    font-weight: bold;
    color: var(--text-main);
}

/* --- DESKTOP PROPORTIONS & DUAL COLUMN DATA SHEETS --- */
@media (min-width: 601px) {
    .modal-box {
        max-width: 560px; /* Wider settings block */
    }
    .spec-box {
        max-width: 700px !important; /* Wider datasheet block */
        max-height: 70vh !important; /* Limit to 70% of viewport height on PC */
        overflow-y: auto !important; /* Ensure vertical scrolling is active */
    }
    
    .guide-grid, .security-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
}

/* --- TACTILE KBD KEYCAP STYLING --- */
kbd {
    background: #ffffff;
    border: 1px solid var(--control-border);
    border-radius: 2px;
    box-shadow: 0 1.5px 0 #aba9a3, inset 0 0.5px 0 rgba(255,255,255,0.6);
    color: var(--text-main);
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    padding: 1px 4px;
    margin: 0 2px;
    display: inline-block;
    vertical-align: middle;
}
body.dark-theme kbd {
    background: #282c37;
    border-color: #3a3f4f;
    box-shadow: 0 1.5px 0 #13151a, inset 0 0.5px 0 rgba(255,255,255,0.05);
    color: #f1f5f9;
}

/* Custom background for Advanced Settings popup header to match settings group background */
#advanced-popup .modal-header.sticky-header {
    background: #d8d6cf;
    position: sticky;
    z-index: 10;
}
body.dark-theme #advanced-popup .modal-header.sticky-header {
    background: #13151a;
}
@media (max-width: 600px) {
    #advanced-popup .modal-header.sticky-header,
    body.dark-theme #advanced-popup .modal-header.sticky-header {
        top: 0;
        background: var(--bg-main);
    }
}
@media (min-width: 601px) {
    #advanced-popup .modal-header.sticky-header {
        top: -30px;
        margin-top: -30px;
        margin-left: -30px;
        margin-right: -30px;
        padding: 30px 30px 18px 30px;
        margin-bottom: 18px;
    }
}

/* Settings Tab Layout (Mobile-first, stacked by default) */
.settings-tab-layout {
    display: flex;
    flex-direction: column;
}
.settings-sidebar {
    display: none;
}
.tab-content {
    display: block !important;
}
.settings-footer {
    margin-top: 24px;
    width: 100%;
}

@media (min-width: 601px) {
    /* Wide and compact settings box proportions on desktop */
    #advanced-popup .modal-box {
        max-width: 820px;
        height: 700px;
        max-height: calc(100vh - 40px);
        display: flex;
        flex-direction: column;
        box-sizing: border-box;
        overflow-y: hidden;
        padding: 30px;
    }
    
    .settings-tab-layout {
        display: flex;
        flex-direction: row;
        gap: 24px;
        align-items: stretch;
        margin-bottom: 8px;
        flex: 1;
        min-height: 0;
    }
    
    .settings-sidebar {
        display: flex;
        flex-direction: column;
        gap: 10px;
        width: 170px;
        flex-shrink: 0;
        border-right: 1px solid var(--control-border);
        padding-right: 20px;
        padding-top: 8px;
    }
    
    .settings-content-pane {
        flex-grow: 1;
        min-width: 0;
        padding: 16px 20px !important;
        background: rgba(0, 0, 0, 0.012);
        border: 1px solid var(--control-border);
        border-radius: 4px;
        box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
        overflow-y: auto;
        box-sizing: border-box;
    }
    body.dark-theme .settings-content-pane {
        background: rgba(0, 0, 0, 0.15);
        box-shadow: inset 0 2px 6px rgba(0,0,0,0.3);
    }
    .settings-content-pane::-webkit-scrollbar {
        width: 6px;
    }
    .settings-content-pane::-webkit-scrollbar-track {
        background: transparent;
    }
    .settings-content-pane::-webkit-scrollbar-thumb {
        background: var(--control-border);
        border-radius: 3px;
    }
    .settings-content-pane::-webkit-scrollbar-thumb:hover {
        background: var(--accent);
    }
    
    /* On desktop, hide inactive tabs and show the active one */
    .tab-content {
        display: none !important;
    }
    .tab-content.active {
        display: block !important;
    }
    
    /* Technical category headers for slots */
    #tab-presets, #tab-filters, #tab-system, #tab-logs {
        position: relative;
        padding-top: 24px !important;
    }
    #tab-presets::before, #tab-filters::before, #tab-system::before, #tab-logs::before {
        position: absolute;
        top: 0;
        right: 0;
        font-family: 'Space Mono', monospace;
        font-size: 0.55rem;
        font-weight: 700;
        color: var(--text-muted);
        letter-spacing: 0.08em;
        opacity: 0.5;
    }
    #tab-presets::before { content: "[ MODULE: 01 // MACRO PRESETS ]"; }
    #tab-filters::before { content: "[ MODULE: 02 // ALGORITHMIC FILTERS ]"; }
    #tab-system::before  { content: "[ MODULE: 03 // SYSTEM OPTIONS ]"; }
    #tab-logs::before    { content: "[ MODULE: 04 // LIVE SYSTEM LOGS ]"; }

    /* Sidebar tab selection buttons with unified orange color */
    .tab-btn {
        background: transparent;
        border: 1px solid transparent;
        color: var(--text-muted);
        font-family: 'Space Mono', monospace;
        font-size: 0.72rem;
        font-weight: 700;
        text-align: left;
        padding: 10px 14px;
        cursor: pointer;
        border-radius: 2px;
        transition: all 0.15s ease;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        position: relative;
    }
    .tab-btn.active {
        background: #ffffff;
        border-color: var(--control-border);
        box-shadow: 0 2px 0 #aba9a3;
        color: var(--accent);
    }
    body.dark-theme .tab-btn.active {
        background: #282c37;
        border-color: #3a3f4f;
        box-shadow: 0 2px 0 #13151a;
    }
    .tab-btn.active::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 3px;
        background: var(--accent);
        border-radius: 2px 0 0 2px;
    }
    .tab-btn:hover {
        color: var(--accent);
        background: rgba(255, 79, 0, 0.04);
    }
    
    /* Keep groups stacked vertically inside the tab content pane */
    .advanced-group-stack {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    
    /* Give settings rows inside modal more spacing on desktop */
    #advanced-popup .te-toggle,
    #advanced-popup .te-input-group {
        padding: 12px 8px !important;
        margin-bottom: 4px;
    }

    #advanced-popup .preset-grid {
        gap: 16px;
        margin-bottom: 24px;
    }

    #advanced-popup .preset-explanations {
        padding: 16px !important;
        margin-top: 16px !important;
    }

    .settings-footer {
        margin-top: 20px !important;
        border-top: 1px solid var(--control-border);
        padding-top: 16px;
        width: auto !important;
    }
    
    /* Disable collapsible headers and hide indicators inside tabs on desktop */
    #advanced-popup .toggle-indicator {
        display: none !important;
    }
    #advanced-popup .te-section-title.collapsible-title {
        cursor: default !important;
        pointer-events: none;
    }
    #advanced-popup .advanced-group.collapsed {
        display: block !important;
    }
    #advanced-popup .preset-grid.collapsed {
        display: grid !important;
    }
    #advanced-popup .advanced-group-stack.collapsed {
        display: flex !important;
    }
    #advanced-popup #session-log-container.collapsed {
        display: flex !important;
    }
    
    /* Hide redundant sub-headings on desktop since tab names represent them */
    #advanced-popup .te-section-title {
        display: none !important;
    }
}

/* Unify all settings content buttons height, padding, fonts, and prevent text wrapping */
#advanced-popup .preset-btn,
#advanced-popup .btn-secondary,
#advanced-popup .te-btn-hazard,
#advanced-popup .te-btn-commit {
    font-size: 0.72rem !important;
    padding: 8px 12px !important;
    height: 38px !important;
    line-height: 20px !important;
    font-family: 'Space Mono', monospace !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.04em !important;
    white-space: nowrap !important;
    box-sizing: border-box !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.te-cycle-btn {
    width: 100% !important;
}

.disabled-toggle {
    opacity: 0.45 !important;
    pointer-events: none !important;
}

/* Custom confirm popup styling */
#confirm-popup {
    z-index: 110;
}
.confirm-box {
    max-width: 420px !important;
    padding: 24px !important;
    text-align: left !important;
}
#confirm-popup .modal-header {
    text-align: left !important;
    display: block !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 0 16px 0 !important;
}
.confirm-body {
    margin: 16px 0 20px 0 !important;
    width: 100% !important;
}
.confirm-message {
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    line-height: 1.5;
    color: var(--text-muted);
    text-align: left !important;
}
.confirm-actions {
    display: flex !important;
    justify-content: space-between !important;
    margin-top: 18px;
    width: 100% !important;
}
.confirm-actions button {
    margin-bottom: 0 !important;
    width: 47% !important;
    height: 38px !important;
    font-size: 0.72rem !important;
    padding: 8px 12px !important;
    line-height: 20px !important;
    font-family: 'Space Mono', monospace !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.04em !important;
    white-space: nowrap !important;
    box-sizing: border-box !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}

@media (max-width: 600px) {
    #confirm-popup .modal-flex-container {
        padding: 16px;
        align-items: center !important;
        justify-content: center !important;
        height: 100%;
        display: flex;
    }
    #confirm-popup .confirm-box {
        width: 90% !important;
        max-width: 380px !important;
        height: auto !important;
        max-height: calc(100vh - 32px) !important;
        border-radius: 2px !important;
        border: 1px solid var(--control-border) !important;
        box-shadow: 
            0 8px 0 #aba9a3,
            0 12px 24px rgba(0,0,0,0.2),
            inset 0 1px 0 rgba(255,255,255,0.5) !important;
        overflow-y: visible !important;
        padding: 20px !important; /* Slightly more compact padding on mobile */
    }
    #confirm-popup .te-modal-title {
        text-align: left !important;
        font-size: 1.05rem !important; /* Scale down title size for clean mobile layout */
    }
    #confirm-popup .te-modal-desc {
        text-align: left !important;
    }
    body.dark-theme #confirm-popup .confirm-box {
        box-shadow: 
            0 8px 0 #12141c,
            0 12px 24px rgba(0,0,0,0.5),
            inset 0 1px 0 rgba(255,255,255,0.05) !important;
    }
}

/* SKEUOMORPHIC SHINE HOVER EFFECT (UPGRADED LIGHT SPOTLIGHT) */
.btn-primary,
.btn-secondary,
.te-btn-hazard,
.te-btn-commit,
.te-btn-donate,
.mode-btn,
.custom-checkbox,
.preset-btn {
    position: relative !important;
    overflow: hidden !important;
}

.btn-primary::after,
.btn-secondary::after,
.te-btn-hazard::after,
.te-btn-commit::after,
.te-btn-donate::after,
.mode-btn::after,
.custom-checkbox::after,
.preset-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 65%);
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 5;
}

.has-specular-hover .btn-primary:hover::after,
.has-specular-hover .btn-secondary:hover::after,
.has-specular-hover .te-btn-hazard:hover::after,
.has-specular-hover .te-btn-commit:hover::after,
.has-specular-hover .te-btn-donate:hover::after,
.has-specular-hover .mode-btn:hover::after,
.has-specular-hover .custom-checkbox:hover::after,
.has-specular-hover .preset-btn:hover::after {
    opacity: 1;
}

/* CHASSIS BACKGROUND PATTERNS (DOTS / GRID / SOLID) */
body.bg-grid {
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px), 
        linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px) !important;
}
body.dark-theme.bg-grid {
    background-image: 
        linear-gradient(rgba(31, 36, 48, 0.7) 1px, transparent 1px), 
        linear-gradient(90deg, rgba(31, 36, 48, 0.7) 1px, transparent 1px) !important;
}

body.bg-solid {
    background-image: none !important;
}

/* SKEUOMORPHIC CHASSIS BACKGROUND PREVIEW BOX */
.te-bg-preview {
    width: 100%;
    height: 38px;
    border: 1px solid var(--control-border);
    border-radius: 2px;
    margin-top: 4px;
    box-shadow: inset 0 1.5px 3px rgba(0, 0, 0, 0.12);
    background-color: var(--bg-main);
    background-size: 16px 16px;
    transition: background-color 0.4s ease;
}

#bg-preview-box {
    background-image: radial-gradient(rgba(0, 0, 0, 0.08) 1px, transparent 1px);
}
body.dark-theme #bg-preview-box {
    background-image: radial-gradient(#1f2430 1px, transparent 1px);
}

.bg-grid #bg-preview-box {
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px), 
        linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px) !important;
}
body.dark-theme.bg-grid #bg-preview-box {
    background-image: 
        linear-gradient(rgba(31, 36, 48, 0.7) 1px, transparent 1px), 
        linear-gradient(90deg, rgba(31, 36, 48, 0.7) 1px, transparent 1px) !important;
}

.bg-solid #bg-preview-box {
    background-image: none !important;
}