/* ============================================================
   chrono.games - Seapunk Pastoral Design System
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Palette */
    --warm-clay: #c4956a;
    --deep-moss: #2e4a3a;
    --bone-dust: #e8dcc8;
    --peat-dark: #1e1a14;
    --tide-foam: #d4e4dc;
    --burnt-sienna: #a0522d;
    --river-teal: #2a6b6b;
    --harvest-gold: #c9a84c;
    --root-black: #12100e;
    --sediment-mist: #b8a99a;

    /* Typography */
    --font-display: 'Saira Extra Condensed', sans-serif;
    --font-body: 'Spectral', serif;
    --font-ui: 'Saira Condensed', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--root-black);
    color: var(--peat-dark);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    line-height: 1.72;
    letter-spacing: 0.005em;
    overflow-x: hidden;
}

/* ============================================================
   TITLE SCREEN
   ============================================================ */
#title-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--deep-moss);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: transform 1s cubic-bezier(0.65, 0, 0.35, 1);
}

#title-screen.slide-up {
    transform: translateY(-100vh);
}

#title-screen.hidden {
    display: none;
}

#title-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

#title-chrono {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(5rem, 14vw, 12rem);
    color: var(--bone-dust);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    line-height: 1;
    display: flex;
    overflow: hidden;
}

#title-chrono .letter {
    opacity: 0;
    display: inline-block;
    transition: opacity 0.15s ease;
}

#title-chrono .letter.visible {
    opacity: 1;
}

#title-line {
    width: 0;
    height: 1px;
    background-color: var(--burnt-sienna);
    margin: 0.3em 0;
    transition: width 500ms cubic-bezier(0.25, 1, 0.5, 1);
}

#title-line.expanded {
    width: 60vw;
}

#title-games {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 6vw, 5rem);
    color: var(--bone-dust);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    line-height: 1;
    opacity: 0;
    transition: opacity 300ms ease;
}

#title-games.visible {
    opacity: 1;
}

/* ============================================================
   MAIN SITE
   ============================================================ */
#main-site {
    opacity: 0;
    transition: opacity 600ms ease;
}

#main-site.visible {
    opacity: 1;
}

/* --- Site Header --- */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 56px;
    background: linear-gradient(180deg, var(--root-black) 0%, rgba(18, 16, 14, 0.92) 80%, rgba(18, 16, 14, 0) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    z-index: 100;
    padding: 0 24px;
}

.header-chrono,
.header-games {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--bone-dust);
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.header-dot {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--burnt-sienna);
}

/* ============================================================
   SPLIT-SCREEN CONTAINER
   ============================================================ */
#split-container {
    display: grid;
    grid-template-columns: 1fr 3px 1fr;
    min-height: 100vh;
    position: relative;
}

/* --- Earth Panel (Left) --- */
#earth-panel {
    background-color: var(--warm-clay);
    position: relative;
    overflow: hidden;
}

#earth-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    filter: url(#earth-noise);
    pointer-events: none;
    z-index: 1;
}

.panel-content {
    position: relative;
    z-index: 2;
    padding: 80px 0 120px;
}

/* --- Game Panel (Right) --- */
#game-panel {
    background-color: var(--deep-moss);
    position: relative;
    overflow: hidden;
}

/* Scan-line overlay */
#game-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 2px,
        rgba(0, 40, 40, 0.06) 2px,
        rgba(0, 40, 40, 0.06) 3px
    );
    pointer-events: none;
    z-index: 3;
    opacity: 0;
    transition: opacity 600ms ease;
}

#game-panel.scanlines-active::before {
    opacity: 1;
}

/* CRT vignette */
#game-panel::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        ellipse at center,
        transparent 70%,
        rgba(0, 0, 0, 0.15) 100%
    );
    pointer-events: none;
    z-index: 4;
    opacity: 0;
    transition: opacity 600ms ease;
}

#game-panel.crt-active::after {
    opacity: 1;
}

/* ============================================================
   CENTER DIVIDER
   ============================================================ */
#center-divider {
    position: relative;
    width: 3px;
    background: linear-gradient(to bottom, var(--burnt-sienna), var(--river-teal));
    cursor: pointer;
    transition: width 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 50;
    overflow: hidden;
}

#center-divider:hover,
#center-divider.expanded {
    width: 24px;
}

#center-divider.flash {
    background: var(--harvest-gold);
}

#divider-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, var(--burnt-sienna), var(--river-teal));
}

#divider-timeline {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 48px;
    opacity: 0;
    transition: opacity 200ms ease;
    white-space: nowrap;
}

#center-divider:hover #divider-timeline,
#center-divider.expanded #divider-timeline {
    opacity: 1;
}

.epoch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: transform 200ms ease;
}

.epoch:hover {
    transform: scale(1.2);
}

.epoch-icon {
    width: 16px;
    height: 16px;
    position: relative;
}

/* Sundial icon */
.epoch-sundial {
    background: var(--harvest-gold);
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
}

/* Hourglass icon */
.epoch-hourglass {
    background: transparent;
    border-top: 8px solid var(--harvest-gold);
    border-bottom: 8px solid var(--harvest-gold);
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    width: 16px;
    height: 16px;
    box-sizing: border-box;
}

/* Clock icon */
.epoch-clock {
    border: 2px solid var(--harvest-gold);
    border-radius: 50%;
    width: 16px;
    height: 16px;
    position: relative;
}

.epoch-clock::before {
    content: '';
    position: absolute;
    top: 3px;
    left: 6px;
    width: 1px;
    height: 5px;
    background: var(--harvest-gold);
}

.epoch-clock::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 6px;
    width: 4px;
    height: 1px;
    background: var(--harvest-gold);
}

/* Digital watch icon */
.epoch-digital {
    border: 1px solid var(--harvest-gold);
    border-radius: 2px;
    width: 14px;
    height: 16px;
    position: relative;
}

.epoch-digital::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 2px;
    width: 8px;
    height: 6px;
    border: 1px solid var(--harvest-gold);
}

/* Quantum icon */
.epoch-quantum {
    width: 16px;
    height: 16px;
    border: 2px solid var(--harvest-gold);
    border-radius: 50%;
    position: relative;
    animation: quantum-spin 3s linear infinite;
}

.epoch-quantum::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 8px;
    height: 8px;
    border: 1px solid var(--harvest-gold);
    border-radius: 50%;
}

@keyframes quantum-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.epoch-label {
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--harvest-gold);
}

/* ============================================================
   SECTIONS - SHARED
   ============================================================ */
.earth-section,
.game-section {
    padding: 80px 48px;
    position: relative;
}

/* Section headings */
.section-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.6rem, 4vw, 3rem);
    letter-spacing: -0.02em;
    text-transform: uppercase;
    line-height: 1.05;
    margin-bottom: 1.4em;
}

.earth-section .section-heading {
    color: var(--peat-dark);
}

.game-section .section-heading {
    color: var(--tide-foam);
}

/* Narrative text */
.narrative-text {
    margin-bottom: 1.8em;
    max-width: 540px;
}

.earth-section .narrative-text {
    color: var(--peat-dark);
}

.game-section .narrative-text {
    color: var(--tide-foam);
}

.narrative-text em,
.narrative-text i {
    font-weight: 500;
    font-style: italic;
}

/* ============================================================
   PIXEL-BOTANICAL BORDERS
   ============================================================ */
.pixel-botanical-border {
    width: 100%;
    height: 24px;
    margin-bottom: 40px;
    background-size: 8px 8px;
    image-rendering: pixelated;
}

/* Wheat pattern (Earth) */
.border-wheat {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--harvest-gold) 0px, var(--harvest-gold) 8px,
            transparent 8px, transparent 16px,
            var(--warm-clay) 16px, var(--warm-clay) 24px,
            var(--harvest-gold) 24px, var(--harvest-gold) 32px,
            transparent 32px, transparent 40px
        ),
        repeating-linear-gradient(
            0deg,
            transparent 0px, transparent 8px,
            var(--harvest-gold) 8px, var(--harvest-gold) 16px,
            transparent 16px, transparent 24px
        );
    background-size: 40px 24px;
}

/* Oak pattern */
.border-oak {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--burnt-sienna) 0px, var(--burnt-sienna) 8px,
            var(--sediment-mist) 8px, var(--sediment-mist) 16px,
            var(--burnt-sienna) 16px, var(--burnt-sienna) 24px,
            transparent 24px, transparent 32px
        );
    background-size: 32px 8px;
}

/* Fern pattern */
.border-fern {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--deep-moss) 0px, var(--deep-moss) 8px,
            var(--river-teal) 8px, var(--river-teal) 16px,
            transparent 16px, transparent 24px,
            var(--deep-moss) 24px, var(--deep-moss) 32px
        ),
        repeating-linear-gradient(
            0deg,
            var(--deep-moss) 0px, var(--deep-moss) 8px,
            transparent 8px, transparent 16px,
            var(--river-teal) 16px, var(--river-teal) 24px
        );
    background-size: 32px 24px;
}

/* Kelp pattern */
.border-kelp {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--river-teal) 0px, var(--river-teal) 8px,
            var(--deep-moss) 8px, var(--deep-moss) 16px,
            var(--river-teal) 16px, var(--river-teal) 24px,
            var(--harvest-gold) 24px, var(--harvest-gold) 32px,
            var(--river-teal) 32px, var(--river-teal) 40px
        );
    background-size: 40px 8px;
}

/* Coral pattern */
.border-coral {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--burnt-sienna) 0px, var(--burnt-sienna) 8px,
            var(--river-teal) 8px, var(--river-teal) 16px,
            var(--harvest-gold) 16px, var(--harvest-gold) 24px,
            var(--burnt-sienna) 24px, var(--burnt-sienna) 32px
        ),
        repeating-linear-gradient(
            0deg,
            var(--river-teal) 0px, var(--river-teal) 8px,
            transparent 8px, transparent 16px,
            var(--burnt-sienna) 16px, var(--burnt-sienna) 24px
        );
    background-size: 32px 24px;
}

/* Digital variants for Game panel */
.border-wheat-digital {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--river-teal) 0px, var(--river-teal) 8px,
            transparent 8px, transparent 16px,
            var(--harvest-gold) 16px, var(--harvest-gold) 24px,
            transparent 24px, transparent 32px
        );
    background-size: 32px 8px;
    opacity: 0.7;
}

.border-oak-digital {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--tide-foam) 0px, var(--tide-foam) 8px,
            var(--river-teal) 8px, var(--river-teal) 16px,
            transparent 16px, transparent 24px,
            var(--tide-foam) 24px, var(--tide-foam) 32px
        );
    background-size: 32px 8px;
    opacity: 0.6;
}

.border-fern-digital {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--harvest-gold) 0px, var(--harvest-gold) 8px,
            transparent 8px, transparent 16px
        ),
        repeating-linear-gradient(
            0deg,
            var(--river-teal) 0px, var(--river-teal) 8px,
            transparent 8px, transparent 16px,
            var(--harvest-gold) 16px, var(--harvest-gold) 24px
        );
    background-size: 16px 24px;
    opacity: 0.5;
}

.border-kelp-digital {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--river-teal) 0px, var(--river-teal) 8px,
            var(--harvest-gold) 8px, var(--harvest-gold) 16px,
            var(--tide-foam) 16px, var(--tide-foam) 24px,
            var(--river-teal) 24px, var(--river-teal) 32px
        );
    background-size: 32px 8px;
    opacity: 0.5;
}

.border-coral-digital {
    background-image:
        repeating-linear-gradient(
            90deg,
            var(--river-teal) 0px, var(--river-teal) 8px,
            var(--harvest-gold) 8px, var(--harvest-gold) 16px,
            var(--burnt-sienna) 16px, var(--burnt-sienna) 24px,
            var(--river-teal) 24px, var(--river-teal) 32px
        ),
        repeating-linear-gradient(
            0deg,
            var(--harvest-gold) 0px, var(--harvest-gold) 8px,
            transparent 8px, transparent 16px,
            var(--river-teal) 16px, var(--river-teal) 24px
        );
    background-size: 32px 24px;
    opacity: 0.6;
}

/* ============================================================
   CHRONOMETER
   ============================================================ */
.chronometer {
    position: relative;
    margin-bottom: 32px;
}

.chronometer-large {
    width: 180px;
    height: 180px;
}

.chronometer-medium {
    width: 64px;
    height: 64px;
}

.chronometer-small {
    width: 24px;
    height: 24px;
}

.chrono-face {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.chrono-dot {
    position: absolute;
    width: 4px;
    height: 4px;
    background-color: var(--harvest-gold);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform-origin: 0 0;
}

.chronometer-large .chrono-dot {
    width: 6px;
    height: 6px;
    --r: 80px;
    transform: translate(
        calc(cos(calc(var(--i) * 30deg)) * var(--r) - 3px),
        calc(sin(calc(var(--i) * 30deg - 90deg)) * var(--r) - 3px)
    );
}

.chronometer-medium .chrono-dot {
    width: 3px;
    height: 3px;
    --r: 26px;
    transform: translate(
        calc(cos(calc(var(--i) * 30deg)) * var(--r) - 1.5px),
        calc(sin(calc(var(--i) * 30deg - 90deg)) * var(--r) - 1.5px)
    );
}

.chronometer-small .chrono-dot {
    width: 2px;
    height: 2px;
    --r: 9px;
    transform: translate(
        calc(cos(calc(var(--i) * 30deg)) * var(--r) - 1px),
        calc(sin(calc(var(--i) * 30deg - 90deg)) * var(--r) - 1px)
    );
}

.chrono-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.chrono-progress circle {
    transition: stroke-dashoffset 100ms linear;
}

/* ============================================================
   COLLAGE CONTAINERS & FRAGMENTS
   ============================================================ */
.collage-container {
    position: relative;
    width: 100%;
    height: 200px;
    margin-bottom: 32px;
    overflow: hidden;
}

.collage-fragment {
    position: absolute;
    transition: transform 800ms cubic-bezier(0.25, 1, 0.5, 1), opacity 600ms ease;
}

.collage-fragment.assembled {
    opacity: 1 !important;
    transform: translate(0, 0) rotate(var(--frag-rotate, 0deg)) !important;
}

/* Earth fragments - slide from left */
.earth-fragment {
    opacity: 0;
    transform: translateX(-80px) rotate(var(--frag-rotate, 0deg));
}

/* Game fragments - slide from right */
.game-fragment {
    opacity: 0;
    transform: translateX(80px) rotate(var(--frag-rotate, 0deg));
}

/* Temporal artifacts - rotate into place */
.temporal-artifact {
    opacity: 0;
    transform: rotate(-180deg);
}

.temporal-artifact.assembled {
    transform: rotate(var(--frag-rotate, 0deg)) !important;
}

/* Collage pulse animation */
.collage-container.pulse {
    animation: collage-pulse 800ms ease-in-out;
}

@keyframes collage-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.015); }
}

/* Fragment variations - Earth */
.frag-1 {
    width: 120px; height: 80px;
    top: 20px; left: 10px;
    --frag-rotate: -2deg;
    background: linear-gradient(135deg, var(--warm-clay), var(--sediment-mist));
    clip-path: polygon(5% 0%, 95% 3%, 100% 90%, 2% 100%);
    mix-blend-mode: multiply;
}

.frag-2 {
    width: 90px; height: 100px;
    top: 40px; left: 100px;
    --frag-rotate: 1.5deg;
    background: linear-gradient(to bottom,
        var(--burnt-sienna) 0%, var(--burnt-sienna) 20%,
        var(--warm-clay) 20%, var(--warm-clay) 40%,
        var(--harvest-gold) 40%, var(--harvest-gold) 60%,
        var(--sediment-mist) 60%, var(--sediment-mist) 80%,
        var(--burnt-sienna) 80%);
    clip-path: polygon(8% 2%, 98% 0%, 92% 95%, 0% 100%);
}

.frag-3 {
    width: 60px; height: 60px;
    top: 10px; right: 40px;
    --frag-rotate: 0deg;
    border: 2px solid var(--harvest-gold);
    border-radius: 50%;
}

.frag-3::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 1px; height: 20px;
    background: var(--harvest-gold);
    transform-origin: bottom center;
    transform: translate(-50%, -100%) rotate(45deg);
}

.frag-3::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 1px; height: 14px;
    background: var(--harvest-gold);
    transform-origin: bottom center;
    transform: translate(-50%, -100%) rotate(180deg);
}

.frag-4 {
    width: 140px; height: 70px;
    top: 30px; left: 0;
    --frag-rotate: 2deg;
    background: repeating-linear-gradient(
        0deg,
        var(--harvest-gold) 0px, var(--harvest-gold) 4px,
        var(--warm-clay) 4px, var(--warm-clay) 8px
    );
    clip-path: polygon(0% 10%, 100% 0%, 95% 100%, 5% 90%);
    mix-blend-mode: multiply;
    opacity: 0.8;
}

.frag-5 {
    width: 80px; height: 110px;
    top: 50px; left: 110px;
    --frag-rotate: -3deg;
    background: linear-gradient(to bottom,
        var(--sediment-mist) 0%, var(--warm-clay) 50%, var(--burnt-sienna) 100%);
    clip-path: polygon(10% 0%, 90% 5%, 100% 92%, 0% 100%);
}

.frag-6 {
    width: 50px; height: 50px;
    top: 0; right: 20px;
    --frag-rotate: 0deg;
    background: conic-gradient(from 0deg, var(--river-teal) 0%, var(--harvest-gold) 25%, transparent 26%);
    border-radius: 50%;
}

.frag-7 {
    width: 110px; height: 90px;
    top: 10px; left: 20px;
    --frag-rotate: -1deg;
    background: linear-gradient(45deg, var(--burnt-sienna), var(--warm-clay), var(--sediment-mist));
    clip-path: polygon(3% 5%, 97% 0%, 100% 95%, 0% 98%);
    mix-blend-mode: multiply;
}

.frag-8 {
    width: 100px; height: 80px;
    top: 60px; left: 90px;
    --frag-rotate: 2.5deg;
    background: repeating-linear-gradient(
        90deg,
        var(--harvest-gold) 0px, var(--harvest-gold) 8px,
        transparent 8px, transparent 16px
    );
    clip-path: polygon(0% 0%, 100% 8%, 95% 100%, 5% 92%);
    opacity: 0.7;
}

.frag-9 {
    width: 55px; height: 55px;
    top: 5px; right: 30px;
    --frag-rotate: 0deg;
    background: transparent;
    border: 1px solid var(--harvest-gold);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.frag-10 {
    width: 130px; height: 100px;
    top: 10px; left: 5px;
    --frag-rotate: 1deg;
    background: linear-gradient(180deg,
        var(--deep-moss) 0%, var(--deep-moss) 33%,
        var(--warm-clay) 33%, var(--warm-clay) 66%,
        var(--burnt-sienna) 66%);
    clip-path: polygon(2% 0%, 100% 4%, 96% 100%, 0% 95%);
}

.frag-11 {
    width: 85px; height: 85px;
    top: 50px; left: 100px;
    --frag-rotate: -2deg;
    background: radial-gradient(circle at center, var(--harvest-gold) 20%, var(--warm-clay) 60%, transparent 70%);
}

.frag-12 {
    width: 40px; height: 100px;
    top: 20px; right: 25px;
    --frag-rotate: 0deg;
    background: linear-gradient(to bottom,
        var(--harvest-gold) 0%, var(--harvest-gold) 10%,
        transparent 10%, transparent 20%,
        var(--harvest-gold) 20%, var(--harvest-gold) 30%,
        transparent 30%, transparent 70%,
        var(--river-teal) 70%, var(--river-teal) 80%,
        transparent 80%, transparent 90%,
        var(--river-teal) 90%);
}

.frag-13 {
    width: 100px; height: 100px;
    top: 20px; left: 15px;
    --frag-rotate: -1.5deg;
    background: radial-gradient(circle at 30% 40%, var(--harvest-gold) 15%, var(--burnt-sienna) 40%, var(--warm-clay) 70%);
    clip-path: polygon(5% 8%, 92% 0%, 100% 90%, 10% 100%);
    mix-blend-mode: multiply;
}

.frag-14 {
    width: 90px; height: 70px;
    top: 80px; left: 80px;
    --frag-rotate: 3deg;
    background: linear-gradient(to right, var(--sediment-mist), var(--warm-clay));
    clip-path: polygon(0% 5%, 100% 0%, 95% 100%, 5% 95%);
}

.frag-15 {
    width: 45px; height: 45px;
    top: 30px; right: 40px;
    --frag-rotate: 0deg;
    border: 2px solid var(--harvest-gold);
    border-radius: 50%;
    background: conic-gradient(from 0deg, var(--river-teal) 0% 30%, transparent 30% 100%);
}

/* Game fragments */
.frag-g1 {
    width: 120px; height: 80px;
    top: 20px; left: 10px;
    --frag-rotate: 2deg;
    background:
        repeating-linear-gradient(
            90deg,
            rgba(42, 107, 107, 0.3) 0px, rgba(42, 107, 107, 0.3) 4px,
            transparent 4px, transparent 8px
        ),
        linear-gradient(135deg, var(--deep-moss), var(--river-teal));
    clip-path: polygon(0% 5%, 100% 0%, 95% 95%, 5% 100%);
    mix-blend-mode: screen;
}

.frag-g2 {
    width: 90px; height: 100px;
    top: 30px; left: 90px;
    --frag-rotate: -1deg;
    background: linear-gradient(to bottom, var(--river-teal) 50%, var(--deep-moss) 50%);
    border: 1px solid rgba(212, 228, 220, 0.2);
    border-radius: 4px;
}

.frag-g3 {
    width: 48px; height: 48px;
    top: 15px; right: 30px;
    --frag-rotate: 0deg;
    border: 2px solid var(--river-teal);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(42, 107, 107, 0.3);
}

.frag-g4 {
    width: 130px; height: 70px;
    top: 20px; left: 5px;
    --frag-rotate: -2deg;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px, transparent 2px,
        rgba(42, 107, 107, 0.15) 2px, rgba(42, 107, 107, 0.15) 3px
    );
    border: 1px solid var(--river-teal);
    border-radius: 2px;
}

.frag-g5 {
    width: 80px; height: 90px;
    top: 60px; left: 100px;
    --frag-rotate: 1.5deg;
    background: linear-gradient(180deg, var(--river-teal), transparent);
    clip-path: polygon(10% 0%, 90% 5%, 100% 100%, 0% 95%);
    mix-blend-mode: screen;
}

.frag-g6 {
    width: 50px; height: 50px;
    top: 10px; right: 25px;
    --frag-rotate: 0deg;
    background: conic-gradient(from 90deg, var(--river-teal) 0%, var(--harvest-gold) 40%, transparent 41%);
    border-radius: 50%;
}

.frag-g7 {
    width: 110px; height: 80px;
    top: 15px; left: 10px;
    --frag-rotate: 1deg;
    background:
        repeating-linear-gradient(
            90deg,
            var(--river-teal) 0px, var(--river-teal) 4px,
            var(--deep-moss) 4px, var(--deep-moss) 8px
        );
    clip-path: polygon(0% 0%, 100% 5%, 98% 95%, 2% 100%);
    opacity: 0.8;
}

.frag-g8 {
    width: 85px; height: 85px;
    top: 50px; left: 80px;
    --frag-rotate: -2.5deg;
    background: radial-gradient(circle at center, var(--river-teal) 30%, transparent 70%);
    border: 1px solid rgba(212, 228, 220, 0.3);
    border-radius: 50%;
}

.frag-g9 {
    width: 40px; height: 60px;
    top: 10px; right: 35px;
    --frag-rotate: 0deg;
    background: transparent;
    border-left: 2px solid var(--harvest-gold);
    border-right: 2px solid var(--harvest-gold);
}

.frag-g9::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -2px;
    width: calc(100% + 4px);
    height: 2px;
    background: var(--river-teal);
}

.frag-g10 {
    width: 120px; height: 90px;
    top: 10px; left: 10px;
    --frag-rotate: 2deg;
    background: linear-gradient(45deg,
        var(--deep-moss) 25%, var(--river-teal) 25%,
        var(--river-teal) 50%, var(--deep-moss) 50%,
        var(--deep-moss) 75%, var(--river-teal) 75%);
    background-size: 16px 16px;
    clip-path: polygon(5% 0%, 100% 3%, 95% 100%, 0% 95%);
    mix-blend-mode: screen;
}

.frag-g11 {
    width: 100px; height: 80px;
    top: 50px; left: 90px;
    --frag-rotate: -1deg;
    background: linear-gradient(to bottom,
        var(--river-teal), var(--harvest-gold));
    clip-path: polygon(0% 0%, 100% 5%, 95% 100%, 5% 95%);
    opacity: 0.6;
}

.frag-g12 {
    width: 50px; height: 80px;
    top: 15px; right: 20px;
    --frag-rotate: 0deg;
    border: 1px solid var(--harvest-gold);
    border-radius: 50%;
    background: radial-gradient(circle at center, rgba(201, 168, 76, 0.2), transparent);
}

.frag-g13 {
    width: 100px; height: 100px;
    top: 15px; left: 10px;
    --frag-rotate: -1deg;
    background:
        radial-gradient(circle at 40% 50%, var(--river-teal) 20%, transparent 60%),
        repeating-linear-gradient(
            45deg,
            transparent 0px, transparent 4px,
            rgba(42, 107, 107, 0.1) 4px, rgba(42, 107, 107, 0.1) 8px
        );
    clip-path: polygon(3% 3%, 97% 0%, 100% 97%, 0% 100%);
}

.frag-g14 {
    width: 80px; height: 80px;
    top: 60px; left: 80px;
    --frag-rotate: 3deg;
    background: linear-gradient(to right, var(--river-teal), var(--deep-moss));
    border: 1px solid rgba(212, 228, 220, 0.15);
    border-radius: 3px;
    mix-blend-mode: screen;
}

.frag-g15 {
    width: 60px; height: 60px;
    top: 20px; right: 20px;
    --frag-rotate: 0deg;
    border: 2px solid var(--river-teal);
    border-radius: 50%;
    background: conic-gradient(from 180deg, var(--river-teal) 0% 50%, var(--harvest-gold) 50% 80%, transparent 80%);
    box-shadow: 0 0 12px rgba(42, 107, 107, 0.3);
}

/* ============================================================
   CRT GLOW EFFECT (Game Panel Interactive)
   ============================================================ */
.game-section .collage-container:hover,
.game-section .section-heading:hover {
    box-shadow: 0 0 8px rgba(42, 107, 107, 0.3), 0 0 24px rgba(42, 107, 107, 0.1);
}

@keyframes phosphor-pulse {
    0%, 100% { box-shadow: 0 0 8px rgba(42, 107, 107, 0.3), 0 0 24px rgba(42, 107, 107, 0.1); }
    50% { box-shadow: 0 0 14px rgba(42, 107, 107, 0.4), 0 0 30px rgba(42, 107, 107, 0.15); }
}

.game-section .collage-container.glow-pulse {
    animation: phosphor-pulse 2.4s ease-in-out infinite;
}

/* ============================================================
   TEMPORAL SPLIT REVEAL
   ============================================================ */
#split-container.single-view #game-panel {
    clip-path: inset(0 100% 0 0);
    transition: clip-path 600ms ease;
}

#split-container.split-revealed #game-panel {
    clip-path: inset(0 0 0 0);
}

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
    background-color: var(--root-black);
    padding: 48px 24px;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-brand {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--bone-dust);
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.footer-tagline {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.9rem;
    color: var(--sediment-mist);
    font-style: italic;
}

.footer-chronometer {
    margin-top: 16px;
}

/* ============================================================
   CONVERGENCE FLASH
   ============================================================ */
@keyframes divider-flash {
    0%, 100% { background: linear-gradient(to bottom, var(--burnt-sienna), var(--river-teal)); }
    50% { background: var(--harvest-gold); }
}

#center-divider.converge {
    animation: divider-flash 200ms ease;
}

/* ============================================================
   RESPONSIVE - MOBILE
   ============================================================ */
@media (max-width: 768px) {
    #split-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    #center-divider {
        width: 100%;
        height: 3px;
        background: linear-gradient(to right, var(--burnt-sienna), var(--river-teal));
        order: 1;
    }

    #center-divider:hover,
    #center-divider.expanded {
        width: 100%;
        height: 60px;
    }

    #center-divider:hover #divider-timeline,
    #center-divider.expanded #divider-timeline {
        flex-direction: row;
        gap: 24px;
    }

    #earth-panel {
        order: 0;
    }

    #game-panel {
        order: 2;
    }

    .earth-section,
    .game-section {
        padding: 48px 24px;
    }

    #split-container.single-view #game-panel {
        clip-path: none;
    }

    .collage-container {
        height: 160px;
    }

    .section-heading {
        font-size: clamp(1.4rem, 6vw, 2.4rem);
    }
}

/* ============================================================
   SCROLL-TRIGGERED VISIBILITY
   ============================================================ */
.earth-section,
.game-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.earth-section.in-view,
.game-section.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Section clip-path reveal animation */
.earth-section.clip-reveal {
    clip-path: circle(0% at 50% 50%);
    transition: clip-path 800ms ease-out, opacity 600ms ease, transform 600ms ease;
}

.earth-section.clip-reveal.in-view {
    clip-path: circle(150% at 50% 50%);
}

.game-section.clip-reveal {
    clip-path: circle(0% at 50% 50%);
    transition: clip-path 800ms ease-out, opacity 600ms ease, transform 600ms ease;
}

.game-section.clip-reveal.in-view {
    clip-path: circle(150% at 50% 50%);
}