/* ==========================================================================
   COSMIC BYTE CB-GK-02 - PRAVEEN DYNAMO SIGNATURE EDITION
   3D Zero-Gravity Scroll Assembly & Keyboard Physics
   ========================================================================== */

:root {
    --bg-main: #04060d;
    --bg-chassis: #0a0e1c;
    --bg-key: #141b2e;
    --bg-key-hover: #1e2842;
    --bg-card: rgba(14, 20, 38, 0.7);

    /* Dynamic RGB Theme Defaults (Dynamo Red) */
    --accent-rgb: 255, 0, 85;
    --accent: #ff0055;
    --accent-glow: rgba(255, 0, 85, 0.4);
    --accent-glow-strong: rgba(255, 0, 85, 0.8);

    --border-glass: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(var(--accent-rgb), 0.5);

    --text-main: #ffffff;
    --text-muted: #8492a6;
    --text-dim: #475569;

    --gold-accent: #ffd700;
    --cyan-accent: #00f2fe;
    --emerald-accent: #00ff88;

    --font-heading: 'Cabinet Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-space: 'Space Grotesk', sans-serif;

    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --assembly-factor: 0; /* 0 = floating in air, 1 = snapped to chassis */
}

/* Theme Variances */
body.theme-corona-cyan {
    --accent-rgb: 0, 242, 254;
    --accent: #00f2fe;
    --accent-glow: rgba(0, 242, 254, 0.4);
    --accent-glow-strong: rgba(0, 242, 254, 0.8);
}

body.theme-cyber-purple {
    --accent-rgb: 168, 85, 247;
    --accent: #a855f7;
    --accent-glow: rgba(168, 85, 247, 0.4);
    --accent-glow-strong: rgba(168, 85, 247, 0.8);
}

body.theme-matrix-green {
    --accent-rgb: 0, 255, 136;
    --accent: #00ff88;
    --accent-glow: rgba(0, 255, 136, 0.4);
    --accent-glow-strong: rgba(0, 255, 136, 0.8);
}

body.theme-solar-gold {
    --accent-rgb: 255, 215, 0;
    --accent: #ffd700;
    --accent-glow: rgba(255, 215, 0, 0.4);
    --accent-glow-strong: rgba(255, 215, 0, 0.8);
}

body.theme-chroma-rainbow {
    --accent-rgb: 255, 0, 128;
    --accent: #ff007f;
    --accent-glow: rgba(255, 0, 128, 0.5);
    animation: rainbowChroma 8s linear infinite;
}

@keyframes rainbowChroma {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

/* Base Setup */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    position: relative;
    user-select: none;
}

.mono {
    font-family: var(--font-mono);
}

/* Ambient Background Canvas & Glows */
#star-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}

.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
    transition: background 0.6s ease;
}

.glow-1 {
    top: 10%;
    left: 20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent), transparent 70%);
}

.glow-2 {
    bottom: 20%;
    right: 15%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, #7928ca, transparent 70%);
}

.glow-3 {
    top: 60%;
    left: 40%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--cyan-accent), transparent 70%);
    opacity: 0.15;
}

#cursor-follower {
    position: fixed;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.15), transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 1;
    transition: opacity 0.3s ease;
}

/* Layout */
.site-wrapper {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px 80px;
    display: flex;
    flex-direction: column;
    gap: 60px;
}

/* Navbar */
.navbar {
    background: rgba(10, 14, 28, 0.75);
    backdrop-filter: blur(24px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.cb-logo-icon {
    font-size: 1.5rem;
    color: var(--accent);
    filter: drop-shadow(0 0 10px var(--accent));
}

.brand-info {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    background: linear-gradient(135deg, #ffffff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-model {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.dynamo-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.35);
    padding: 6px 18px;
    border-radius: var(--radius-full);
    box-shadow: 0 0 16px rgba(255, 215, 0, 0.2);
}

.crown-icon {
    font-size: 1rem;
}

.dynamo-name {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 0.85rem;
    color: var(--gold-accent);
    letter-spacing: 0.05em;
}

.badge-edition {
    font-size: 0.68rem;
    color: var(--text-main);
    font-family: var(--font-mono);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: #ffffff;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    background: rgba(var(--accent-rgb), 0.2);
    border-color: var(--accent);
}

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
}

.btn-accent:hover {
    transform: scale(1.04);
    box-shadow: 0 0 24px var(--accent-glow-strong);
}

/* ==========================================================================
   Hero Stage & 3D Keyboard Viewport
   ========================================================================== */
.hero-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 32px;
    position: relative;
}

.hero-header-text {
    max-width: 840px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stage-tag {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.12);
    border: 1px solid var(--border-accent);
    padding: 4px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 14px;
    letter-spacing: 0.1em;
}

.hero-main-title {
    font-family: var(--font-heading);
    font-size: 3.4rem;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.dynamo-glow {
    background: linear-gradient(135deg, var(--accent) 0%, var(--gold-accent) 50%, var(--cyan-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px var(--accent-glow);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 680px;
    margin-bottom: 24px;
}

.assembly-meter-bar {
    width: 100%;
    max-width: 600px;
    background: rgba(10, 14, 28, 0.8);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    margin-bottom: 20px;
}

.meter-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    margin-bottom: 8px;
}

.meter-status {
    color: var(--accent);
    font-weight: 800;
}

.meter-track {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    overflow: hidden;
}

.meter-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--gold-accent));
    border-radius: 4px;
    box-shadow: 0 0 10px var(--accent);
    transition: width 0.1s linear;
}

.floating-controls {
    display: flex;
    gap: 12px;
}

.stage-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: #ffffff;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.stage-btn.active, .stage-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 18px var(--accent-glow);
    transform: translateY(-2px);
}

/* ==========================================================================
   3D Keyboard Stage
   ========================================================================== */
.keyboard-3d-viewport {
    width: 100%;
    max-width: 1120px;
    min-height: 480px;
    perspective: 1400px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
}

.holo-grid-lines {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(to right, rgba(var(--accent-rgb), 0.08) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(var(--accent-rgb), 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    pointer-events: none;
}

/* Keyboard Base Chassis */
.keyboard-base-chassis {
    width: 100%;
    max-width: 1060px;
    background: linear-gradient(180deg, #10172e 0%, #080c18 100%);
    border: 2px solid var(--border-accent);
    border-radius: 20px;
    box-shadow: 
        0 25px 60px rgba(0, 0, 0, 0.8),
        0 0 45px var(--accent-glow),
        inset 0 1px 1px rgba(255, 255, 255, 0.2);
    padding: 24px;
    position: relative;
    transform: rotateX(22deg) rotateY(0deg) translateZ(0);
    transform-style: preserve-3d;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.chassis-header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.chassis-logo {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 0.82rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.chassis-badge-plate {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border: 1px solid var(--gold-accent);
    border-radius: var(--radius-sm);
    padding: 4px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.2);
}

.plate-text {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 900;
    color: var(--gold-accent);
    letter-spacing: 0.08em;
}

.plate-serial {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.chassis-led-indicators {
    display: flex;
    gap: 12px;
}

.led-dot {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 4px;
}

.led-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #334155;
}

.led-dot.active {
    color: var(--accent);
}

.led-dot.active::before {
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
}

/* ==========================================================================
   Keys Matrix Grid & 3D Floating Keycaps
   ========================================================================== */
.keys-matrix-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
    transform-style: preserve-3d;
}

.kb-row {
    display: flex;
    gap: 6px;
    justify-content: center;
    transform-style: preserve-3d;
}

.kb-spacer {
    width: 14px;
}

/* Individual 3D Floating Key */
.float-key {
    background: var(--bg-key);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    min-width: 44px;
    height: 46px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transform-style: preserve-3d;
    box-shadow: 
        0 4px 0 #070a14,
        0 6px 12px rgba(0, 0, 0, 0.4),
        0 0 10px rgba(var(--accent-rgb), 0.2);
    /* 3D Transform controlled by JS scroll factor */
    transform: 
        translate3d(
            calc(var(--fx, 0px) * (1 - var(--assembly-factor))),
            calc(var(--fy, 0px) * (1 - var(--assembly-factor))),
            calc(var(--fz, 0px) * (1 - var(--assembly-factor)))
        )
        rotateX(calc(var(--rx, 0deg) * (1 - var(--assembly-factor))))
        rotateY(calc(var(--ry, 0deg) * (1 - var(--assembly-factor))));
    transition: 
        transform 0.15s ease-out,
        background-color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.keycap-top {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 800;
    color: #e2e8f0;
    z-index: 2;
    pointer-events: none;
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
}

.switch-stem {
    position: absolute;
    bottom: -6px;
    width: 12px;
    height: 8px;
    background: #ff0055;
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(255, 0, 85, 0.6);
    opacity: calc(1 - var(--assembly-factor));
    transition: opacity 0.2s ease;
}

/* Key Hover & Active Pressed States */
.float-key:hover {
    background: var(--bg-key-hover);
    border-color: var(--accent);
    box-shadow: 0 4px 0 #070a14, 0 0 20px var(--accent-glow-strong);
}

.float-key.pressed, .float-key:active {
    background: var(--accent);
    border-color: #ffffff;
    box-shadow: 0 1px 0 #070a14, 0 0 25px var(--accent-glow-strong);
    transform: 
        translate3d(
            calc(var(--fx, 0px) * (1 - var(--assembly-factor))),
            calc(var(--fy, 0px) * (1 - var(--assembly-factor)) + 4px),
            calc(var(--fz, 0px) * (1 - var(--assembly-factor)))
        ) !important;
}

.float-key.pressed .keycap-top {
    color: #ffffff;
}

/* Key Dimensions */
.key-tab { min-width: 66px; }
.key-caps { min-width: 76px; }
.key-wide-1 { min-width: 74px; }
.key-enter { min-width: 86px; background: rgba(var(--accent-rgb), 0.25); border-color: var(--accent); }
.key-shift-l { min-width: 96px; }
.key-shift-r { min-width: 106px; }
.key-mod { min-width: 52px; }

/* Giant Spacebar with Praveen Dynamo Engraving */
.key-spacebar {
    flex: 1;
    max-width: 440px;
    background: linear-gradient(90deg, #141b2e 0%, rgba(var(--accent-rgb), 0.3) 50%, #141b2e 100%);
    border: 1px solid var(--accent);
    box-shadow: 0 4px 0 #070a14, 0 0 18px var(--accent-glow);
}

.space-engraved {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.15em;
    color: #ffffff;
    text-shadow: 0 0 8px var(--accent);
}

.stem-left { left: 40px; }
.stem-center { left: 50%; transform: translateX(-50%); }
.stem-right { right: 40px; }

/* Keystroke HUD Telemetry */
.keystroke-hud {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(5, 7, 15, 0.85);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 14px 24px;
    width: 100%;
    max-width: 1060px;
    margin-top: 24px;
}

.hud-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hud-label {
    font-size: 0.72rem;
    color: var(--text-dim);
    font-weight: 700;
}

.hud-val {
    font-size: 0.95rem;
    font-weight: 800;
    color: #ffffff;
}

.hud-val.highlight {
    color: var(--gold-accent);
}

.text-red { color: var(--accent); }
.text-cyan { color: var(--cyan-accent); }

/* ==========================================================================
   Section 2: Switch Lab
   ========================================================================== */
.features-section, .rgb-modes-section, .specs-section {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.section-header {
    text-align: center;
}

.sub-heading {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 0.12em;
    display: block;
    margin-bottom: 6px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
}

.switch-lab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.lab-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: all 0.3s ease;
}

.lab-card:hover, .lab-card.active {
    border-color: var(--border-accent);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5), 0 0 25px var(--accent-glow);
    transform: translateY(-4px);
}

.switch-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    width: fit-content;
}

.switch-badge.red { background: rgba(255, 0, 85, 0.15); color: #ff0055; border: 1px solid #ff0055; }
.switch-badge.blue { background: rgba(0, 242, 254, 0.15); color: #00f2fe; border: 1px solid #00f2fe; }
.switch-badge.brown { background: rgba(217, 119, 6, 0.15); color: #d97706; border: 1px solid #d97706; }

.lab-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 800;
}

.lab-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    flex: 1;
}

.test-switch-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glass);
    color: #ffffff;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s ease;
}

.test-switch-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
}

/* ==========================================================================
   Section 3: RGB Modes Row
   ========================================================================== */
.rgb-pills-row {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}

.rgb-mode-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.rgb-mode-card .dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    box-shadow: 0 0 12px currentColor;
}

.rgb-mode-card .name {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
}

.rgb-mode-card.active, .rgb-mode-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.05);
}

.rgb-mode-card.active .name {
    color: #ffffff;
}

/* ==========================================================================
   Section 4: Technical Specs Bento
   ========================================================================== */
.specs-grid-bento {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.spec-bento-item {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: all 0.3s ease;
}

.spec-bento-item:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.highlight-dynamo {
    border-color: var(--gold-accent);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.08) 0%, rgba(14, 20, 38, 0.8) 100%);
}

.spec-num {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--accent);
}

.highlight-dynamo .spec-num {
    color: var(--gold-accent);
}

.spec-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 800;
    color: #ffffff;
}

.spec-bento-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: rgba(10, 14, 28, 0.7);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 20px 28px;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-brand {
    font-family: var(--font-heading);
    font-weight: 900;
    color: #ffffff;
}

.sep {
    margin: 0 8px;
}

/* Responsive */
@media (max-width: 1024px) {
    .switch-lab-grid, .specs-grid-bento {
        grid-template-columns: 1fr;
    }

    .rgb-pills-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .keyboard-base-chassis {
        transform: rotateX(12deg);
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 12px;
    }

    .hero-main-title {
        font-size: 2.4rem;
    }

    .keyboard-base-chassis {
        transform: rotateX(0deg);
        overflow-x: auto;
    }

    .keystroke-hud {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
}