/* ============================================
   desca.work — Twilight Warmth
   ============================================ */

/* --- Custom Properties --- */
:root {
    --dusty-plaster: #f2e8db;
    --burnt-dusk: #2d1f2f;
    --neon-peach: #ff7b54;
    --faded-tangerine: #e8a87c;
    --twilight-mauve: #8b5e83;
    --charcoal-bruise: #2a1f2d;
    --warm-fog: #d4c5b9;
    --sulfur-glow: #f5d76e;

    --font-display: 'Righteous', cursive;
    --font-mono: 'Space Mono', monospace;
    --font-body: 'Libre Baskerville', serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--dusty-plaster);
    color: var(--charcoal-bruise);
    font-family: var(--font-body);
    overflow-x: hidden;
    transition: background-color 1.2s cubic-bezier(0.4, 0, 0.2, 1),
                color 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body.inverted {
    background-color: var(--burnt-dusk);
    color: var(--warm-fog);
}

/* --- Grain Overlay --- */
#grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.8s ease;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 200px 200px;
}

#grain-overlay.visible {
    opacity: 0.06;
}

body.inverted #grain-overlay.visible {
    opacity: 0.1;
}

/* --- Scroll Progress Indicator --- */
#scroll-indicator {
    position: fixed;
    right: 20px;
    top: 20%;
    height: 60%;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#scroll-track {
    position: absolute;
    width: 1px;
    height: 100%;
    background: rgba(212, 197, 185, 0.3);
}

#scroll-thumb {
    position: absolute;
    width: 3px;
    background: var(--neon-peach);
    border-radius: 2px;
    top: 0;
    height: 10%;
    transition: top 0.1s ease;
}

.floor-marker {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    border: 1px solid var(--twilight-mauve);
    background: transparent;
    left: 50%;
    transform: translateX(-50%);
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

.floor-marker.active {
    background: var(--neon-peach);
    box-shadow: 0 0 8px rgba(255, 123, 84, 0.5);
}

.floor-marker[data-floor="0"] { top: 0%; }
.floor-marker[data-floor="1"] { top: 20%; }
.floor-marker[data-floor="2"] { top: 40%; }
.floor-marker[data-floor="3"] { top: 55%; }
.floor-marker[data-floor="4"] { top: 75%; }
.floor-marker[data-floor="5"] { top: 95%; }

/* --- Floor Base --- */
.floor {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

/* --- Floor 0 — Hero --- */
.floor-0 {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 120vh;
    padding: 2rem;
}

/* City Parallax Layers */
.parallax-layer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    will-change: transform;
}

.city-layer-far {
    background: var(--faded-tangerine);
    opacity: 0.2;
    clip-path: polygon(
        0% 100%, 0% 70%, 3% 70%, 3% 55%, 6% 55%, 6% 60%, 9% 60%, 9% 45%,
        12% 45%, 12% 50%, 15% 50%, 15% 65%, 18% 65%, 18% 40%, 20% 38%,
        22% 40%, 22% 55%, 25% 55%, 25% 60%, 28% 60%, 28% 50%, 31% 50%,
        31% 42%, 33% 35%, 35% 42%, 35% 55%, 38% 55%, 38% 48%, 42% 48%,
        42% 58%, 45% 58%, 45% 52%, 48% 52%, 48% 44%, 50% 40%, 52% 44%,
        52% 55%, 55% 55%, 55% 62%, 58% 62%, 58% 50%, 62% 50%, 62% 45%,
        65% 45%, 65% 55%, 68% 55%, 68% 60%, 72% 60%, 72% 48%, 75% 48%,
        75% 38%, 77% 35%, 79% 38%, 79% 52%, 82% 52%, 82% 58%, 85% 58%,
        85% 50%, 88% 50%, 88% 55%, 92% 55%, 92% 62%, 95% 62%, 95% 48%,
        98% 48%, 98% 55%, 100% 55%, 100% 100%
    );
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.city-layer-mid {
    background: var(--twilight-mauve);
    opacity: 0.4;
    clip-path: polygon(
        0% 100%, 0% 75%, 4% 75%, 4% 60%, 7% 60%, 7% 68%, 10% 68%,
        10% 55%, 13% 55%, 13% 50%, 15% 45%, 17% 50%, 17% 60%, 20% 60%,
        20% 65%, 24% 65%, 24% 52%, 27% 52%, 27% 58%, 30% 58%, 30% 48%,
        33% 48%, 33% 42%, 35% 38%, 37% 42%, 37% 55%, 40% 55%, 40% 62%,
        44% 62%, 44% 55%, 47% 55%, 47% 48%, 50% 48%, 50% 55%, 53% 55%,
        53% 60%, 57% 60%, 57% 50%, 60% 50%, 60% 42%, 62% 38%, 64% 42%,
        64% 55%, 67% 55%, 67% 62%, 70% 62%, 70% 55%, 74% 55%, 74% 48%,
        77% 48%, 77% 55%, 80% 55%, 80% 60%, 84% 60%, 84% 52%, 87% 52%,
        87% 45%, 89% 40%, 91% 45%, 91% 58%, 94% 58%, 94% 65%, 97% 65%,
        97% 55%, 100% 55%, 100% 100%
    );
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.2s;
}

.city-layer-near {
    background: var(--charcoal-bruise);
    opacity: 0.8;
    clip-path: polygon(
        0% 100%, 0% 78%, 3% 78%, 3% 65%, 5% 65%, 5% 70%, 8% 70%,
        8% 60%, 11% 60%, 11% 55%, 13% 50%, 15% 55%, 15% 65%, 18% 65%,
        18% 72%, 21% 72%, 21% 62%, 24% 62%, 24% 55%, 26% 48%, 28% 55%,
        28% 65%, 31% 65%, 31% 70%, 35% 70%, 35% 60%, 38% 60%, 38% 55%,
        40% 50%, 42% 55%, 42% 65%, 45% 65%, 45% 72%, 48% 72%, 48% 62%,
        51% 62%, 51% 55%, 53% 48%, 55% 55%, 55% 68%, 58% 68%, 58% 60%,
        62% 60%, 62% 52%, 64% 45%, 66% 52%, 66% 62%, 69% 62%, 69% 70%,
        72% 70%, 72% 60%, 75% 60%, 75% 55%, 77% 48%, 79% 55%, 79% 65%,
        82% 65%, 82% 72%, 85% 72%, 85% 62%, 88% 62%, 88% 55%, 90% 50%,
        92% 55%, 92% 68%, 95% 68%, 95% 75%, 98% 75%, 98% 65%, 100% 65%,
        100% 100%
    );
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.4s;
}

.city-layer-far.entered,
.city-layer-mid.entered,
.city-layer-near.entered {
    transform: translateY(0);
}

/* Hero Headline */
.hero-headline {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 400;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    mix-blend-mode: difference;
    color: var(--dusty-plaster);
    position: relative;
    z-index: 10;
    margin-left: -8%;
    margin-top: -5%;
}

.hero-headline .letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.hero-headline .letter.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-sub {
    font-family: var(--font-mono);
    font-size: clamp(0.65rem, 1vw, 0.85rem);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--twilight-mauve);
    margin-top: 1.5rem;
    margin-left: -8%;
    opacity: 0;
    transition: opacity 0.8s ease 1.5s;
    position: relative;
    z-index: 10;
}

.hero-sub.visible {
    opacity: 1;
}

/* --- Split Layout (Floors 1-3) --- */
.floor-content {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding: 4rem 3rem;
    gap: 3rem;
}

.split-right {
    flex-direction: row-reverse;
}

.panel-60 {
    flex: 0 0 58%;
}

.panel-40 {
    flex: 0 0 38%;
    position: relative;
    min-height: 400px;
}

.label {
    font-family: var(--font-mono);
    font-size: clamp(0.75rem, 1.2vw, 1rem);
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--twilight-mauve);
    display: block;
    margin-bottom: 1.5rem;
}

.section-headline {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 400;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--charcoal-bruise);
    line-height: 1.1;
    margin-bottom: 2rem;
}

.body-text {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.4vw, 1.2rem);
    font-weight: 400;
    line-height: 1.75;
    max-width: 58ch;
    margin-bottom: 1.5rem;
    color: var(--charcoal-bruise);
}

/* --- Collage Pieces --- */
.collage-panel {
    perspective: 800px;
}

.collage-piece {
    position: absolute;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.piece-rect {
    left: var(--x);
    top: var(--y);
    width: var(--w);
    height: var(--h);
    background: var(--bg);
    opacity: var(--op);
    transform: rotate(var(--rot, 0deg));
    box-shadow: 4px 4px 12px rgba(42, 31, 45, 0.15);
    border-radius: 2px;
}

.piece-circle {
    left: var(--x);
    top: var(--y);
    width: var(--size);
    height: var(--size);
    background: var(--bg);
    opacity: var(--op);
    border-radius: 50%;
    box-shadow: 3px 3px 10px rgba(42, 31, 45, 0.12);
}

.piece-polygon {
    left: var(--x);
    top: var(--y);
    width: 120px;
    height: 120px;
    background: var(--bg);
    opacity: var(--op);
    clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
    box-shadow: 3px 3px 10px rgba(42, 31, 45, 0.12);
}

/* --- Urban Icons --- */
.urban-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    opacity: 0.5;
    animation: bob 4s ease-in-out infinite;
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.icon-fire-escape {
    right: 10%;
    bottom: 15%;
    background: linear-gradient(
        to bottom,
        transparent 0%, transparent 8%,
        var(--twilight-mauve) 8%, var(--twilight-mauve) 12%,
        transparent 12%, transparent 25%,
        var(--twilight-mauve) 25%, var(--twilight-mauve) 29%,
        transparent 29%, transparent 42%,
        var(--twilight-mauve) 42%, var(--twilight-mauve) 46%,
        transparent 46%, transparent 59%,
        var(--twilight-mauve) 59%, var(--twilight-mauve) 63%,
        transparent 63%, transparent 76%,
        var(--twilight-mauve) 76%, var(--twilight-mauve) 80%,
        transparent 80%, transparent 93%,
        var(--twilight-mauve) 93%, var(--twilight-mauve) 97%,
        transparent 97%
    );
    mask-image: linear-gradient(135deg, black 50%, transparent 50%);
    -webkit-mask-image: linear-gradient(135deg, black 50%, transparent 50%);
}

.icon-water-tower {
    left: 65%;
    top: 10%;
    border: 2px solid var(--neon-peach);
    border-radius: 4px 4px 50% 50%;
    opacity: 0.4;
}

.icon-antenna {
    right: 5%;
    top: 20%;
    border-left: 2px solid var(--twilight-mauve);
    position: absolute;
}

.icon-antenna::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--twilight-mauve);
    top: 10px;
    left: -10px;
}

.icon-antenna::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 2px;
    background: var(--twilight-mauve);
    top: 25px;
    left: -7px;
}

/* --- Floor 4 — Horizontal Scroll --- */
.floor-4 {
    min-height: 70vh;
    padding: 4rem 3rem 2rem;
    display: flex;
    flex-direction: column;
}

.floor-4-label {
    font-family: var(--font-mono);
    font-size: clamp(0.75rem, 1.2vw, 1rem);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--twilight-mauve);
    margin-bottom: 1rem;
}

.floor-4-headline {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 400;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.horizontal-scroll-container {
    flex: 1;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 1rem;
}

.horizontal-scroll-container::-webkit-scrollbar {
    height: 4px;
}

.horizontal-scroll-container::-webkit-scrollbar-track {
    background: var(--twilight-mauve);
    border-radius: 2px;
}

.horizontal-scroll-container::-webkit-scrollbar-thumb {
    background: var(--neon-peach);
    border-radius: 2px;
}

.h-scroll-track {
    display: flex;
    gap: 2rem;
    padding: 2rem 1rem;
    width: max-content;
}

.h-card {
    width: 70vw;
    max-width: 400px;
    min-height: 300px;
    scroll-snap-align: center;
    perspective: 800px;
    flex-shrink: 0;
}

.h-card-inner {
    width: 100%;
    height: 100%;
    min-height: 300px;
    padding: 2.5rem;
    background: var(--faded-tangerine);
    border-radius: 4px;
    box-shadow: 6px 6px 20px rgba(42, 31, 45, 0.15);
    transform: rotate(-1deg);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.h-card:nth-child(2) .h-card-inner {
    background: var(--twilight-mauve);
    color: var(--dusty-plaster);
    transform: rotate(1.5deg);
}

.h-card:nth-child(3) .h-card-inner {
    background: var(--neon-peach);
    transform: rotate(-0.5deg);
}

.h-card:nth-child(4) .h-card-inner {
    background: var(--sulfur-glow);
    transform: rotate(2deg);
}

.h-card:nth-child(5) .h-card-inner {
    background: var(--charcoal-bruise);
    color: var(--warm-fog);
    transform: rotate(-1.5deg);
}

.card-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.6;
}

.h-card h3 {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 400;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.h-card p {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 1.2vw, 1.05rem);
    line-height: 1.7;
}

/* --- Floor 5 — The Basement --- */
.floor-5 {
    background: var(--burnt-dusk);
    min-height: 100vh;
    position: relative;
}

.basement-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 4rem 3rem;
}

.basement-collage {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.basement-text {
    position: relative;
    z-index: 2;
    max-width: 600px;
    text-align: center;
}

.label-light {
    color: var(--neon-peach);
}

.headline-light {
    color: var(--dusty-plaster);
    margin-bottom: 2rem;
}

.text-light {
    color: var(--warm-fog);
}

.basement-footer {
    margin-top: 4rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
    align-items: center;
}

.footer-mark {
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--neon-peach);
}

.footer-year {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    color: var(--warm-fog);
    opacity: 0.5;
}

/* --- Mobile --- */
@media (max-width: 768px) {
    .floor-content {
        flex-direction: column;
        padding: 3rem 1.5rem;
    }

    .split-right {
        flex-direction: column;
    }

    .panel-60, .panel-40 {
        flex: none;
        width: 100%;
    }

    .panel-40 {
        min-height: 250px;
    }

    #scroll-indicator {
        display: none;
    }

    .hero-headline {
        margin-left: 0;
        margin-top: 0;
        text-align: center;
    }

    .hero-sub {
        margin-left: 0;
        text-align: center;
    }

    .h-card {
        width: 85vw;
    }
}