:root {
    --darkroom-black: #0D0B09;
    --exposed-charcoal: #1C1814;
    --amber-developer: #C4873B;
    --sepia-highlight: #E8C88A;
    --slate-aperture: #4A6B82;
    --steel-shutter: #8AAFC4;
    --silver-gelatin: #D4CFC8;
    --fixative-white: #F0ECE4;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.72;
    color: var(--silver-gelatin);
    background: var(--darkroom-black);
    overflow-x: hidden;
}

.grain-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.04;
    mix-blend-mode: overlay;
}

.scene-indicator {
    position: fixed;
    top: 2rem; left: 2rem;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    color: var(--slate-aperture);
    opacity: 0.5;
    z-index: 100;
    transition: opacity 300ms ease;
}

.progress-strip {
    position: fixed;
    right: 1.5rem;
    top: 10%;
    width: 2px;
    height: 80%;
    background: rgba(74, 107, 130, 0.15);
    z-index: 100;
}

.progress-fill {
    width: 100%;
    height: 0%;
    background: var(--amber-developer);
    transition: height 100ms linear;
}

.scene {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.letterbox {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 0;
    padding-bottom: 41.84%;
    transform: translateY(-50%);
    overflow: hidden;
}

.grid-lines {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        repeating-linear-gradient(90deg, rgba(74,107,130,0.06) 0, rgba(74,107,130,0.06) 1px, transparent 1px, transparent calc(100% / 12)),
        repeating-linear-gradient(0deg, rgba(74,107,130,0.06) 0, rgba(74,107,130,0.06) 1px, transparent 1px, transparent calc(100% / 8));
    pointer-events: none;
    z-index: 1;
}

.grid-lines-dark {
    background-image:
        repeating-linear-gradient(90deg, rgba(13,11,9,0.08) 0, rgba(13,11,9,0.08) 1px, transparent 1px, transparent calc(100% / 12)),
        repeating-linear-gradient(0deg, rgba(13,11,9,0.08) 0, rgba(13,11,9,0.08) 1px, transparent 1px, transparent calc(100% / 8));
}

.grid-lines-visible {
    background-image:
        repeating-linear-gradient(90deg, rgba(74,107,130,0.15) 0, rgba(74,107,130,0.15) 1px, transparent 1px, transparent calc(100% / 12)),
        repeating-linear-gradient(0deg, rgba(74,107,130,0.15) 0, rgba(74,107,130,0.15) 1px, transparent 1px, transparent calc(100% / 8));
}

.grid-lines-bright {
    background-image:
        repeating-linear-gradient(90deg, rgba(74,107,130,0.2) 0, rgba(74,107,130,0.2) 1px, transparent 1px, transparent calc(100% / 12)),
        repeating-linear-gradient(0deg, rgba(74,107,130,0.2) 0, rgba(74,107,130,0.2) 1px, transparent 1px, transparent calc(100% / 8));
}

.vignette {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(ellipse at center, transparent 40%, rgba(13,11,9,0.6) 100%);
    pointer-events: none;
    z-index: 2;
}

.vignette-light {
    background: radial-gradient(ellipse at center, transparent 40%, rgba(196,135,59,0.15) 80%, rgba(13,11,9,0.4) 100%);
}

.vignette-amber {
    background: radial-gradient(ellipse at center, transparent 30%, rgba(196,135,59,0.12) 70%, rgba(13,11,9,0.5) 100%);
}

.light-leak {
    position: absolute;
    top: 0; left: -30%;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(196,135,59,0.18), transparent);
    pointer-events: none;
    z-index: 3;
    opacity: 0;
}

.light-leak-left {
    animation: lightLeakDrift 3s 1.5s ease-out forwards;
}

.light-leak-drift {
    animation: lightLeakLoop 8s ease-in-out infinite;
}

@keyframes lightLeakDrift {
    0% { left: -30%; opacity: 0; }
    50% { opacity: 1; }
    100% { left: 80%; opacity: 0; }
}

@keyframes lightLeakLoop {
    0% { left: -30%; opacity: 0; }
    25% { opacity: 0.6; }
    50% { left: 80%; opacity: 0; }
    100% { left: -30%; opacity: 0; }
}

.scene-content {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 8vw;
    z-index: 5;
}

/* Scene I */
.scene-1 {
    background: var(--darkroom-black);
}

.aperture-content {
    clip-path: circle(0% at 50% 50%);
    transition: clip-path 1.8s cubic-bezier(0.33, 1, 0.68, 1);
}

.aperture-content.open {
    clip-path: circle(75% at 50% 50%);
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(4rem, 12vw, 8rem);
    letter-spacing: -0.03em;
    color: var(--fixative-white);
    line-height: 1;
}

.hero-tagline {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    color: var(--silver-gelatin);
    opacity: 0.7;
    margin-top: 1.5rem;
    max-width: 40ch;
}

/* Scene II */
.scene-2 {
    background: var(--silver-gelatin);
}

.scene-negative .scene-content {
    align-items: center;
    text-align: center;
}

.negative-content .body-text {
    color: var(--darkroom-black);
    max-width: 52ch;
    margin-bottom: 1.5rem;
}

/* Scene III */
.scene-3 {
    background: var(--darkroom-black);
    height: auto;
    min-height: 100vh;
}

.contact-content {
    align-items: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    max-width: 900px;
    width: 100%;
}

.contact-thumb {
    position: relative;
    aspect-ratio: 3/2;
    border: 2px solid rgba(240,236,228,0.3);
    transform: rotate(var(--rotate, 0deg));
    cursor: pointer;
    transition: transform 200ms ease-out, box-shadow 200ms ease-out;
}

.contact-thumb:hover {
    transform: rotate(var(--rotate, 0deg)) scale(1.03);
    box-shadow: 0 4px 20px rgba(196,135,59,0.2);
}

.thumb-fill {
    width: 100%; height: 100%;
}

.warm-1 { background: linear-gradient(135deg, #C4873B, #E8C88A); }
.warm-2 { background: linear-gradient(160deg, #E8C88A, #C4873B); }
.warm-3 { background: linear-gradient(200deg, #C4873B, #1C1814); }
.warm-4 { background: linear-gradient(45deg, #E8C88A, #C4873B, #1C1814); }
.warm-5 { background: linear-gradient(180deg, #C4873B, #E8C88A, #D4CFC8); }
.cool-1 { background: linear-gradient(135deg, #4A6B82, #8AAFC4); }
.cool-2 { background: linear-gradient(180deg, #8AAFC4, #4A6B82); }
.cool-3 { background: linear-gradient(200deg, #4A6B82, #1C1814); }
.cool-4 { background: linear-gradient(160deg, #8AAFC4, #4A6B82, #0D0B09); }
.contrast-1 { background: linear-gradient(135deg, #0D0B09, #D4CFC8); }
.contrast-2 { background: linear-gradient(180deg, #D4CFC8, #0D0B09); }
.contrast-3 { background: linear-gradient(160deg, #1C1814, #F0ECE4, #1C1814); }

.frame-num {
    position: absolute;
    bottom: -1.4rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--slate-aperture);
    opacity: 0.4;
}

/* Scene IV */
.scene-4 {
    background: linear-gradient(180deg, var(--darkroom-black), var(--exposed-charcoal));
}

.developer-content {
    align-items: center;
    text-align: center;
}

.developer-content .body-text {
    max-width: 48ch;
    margin-bottom: 1.5rem;
}

.developer-phrase {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(1.4rem, 3vw, 2.2rem);
    letter-spacing: -0.03em;
    color: var(--amber-developer);
    margin: 2rem 0;
}

/* Scene V */
.scene-5 {
    background: var(--darkroom-black);
}

.enlarger-content {
    align-items: center;
    justify-content: center;
}

.enlarger-word {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(6rem, 18vw, 14rem);
    letter-spacing: -0.03em;
    color: var(--amber-developer);
    line-height: 1;
    user-select: none;
}

/* Scene VI */
.scene-6 {
    background: var(--exposed-charcoal);
}

.archive-content {
    align-items: center;
    text-align: center;
}

.archive-meta {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--slate-aperture);
    opacity: 0.5;
}

.archive-domain {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 1.2rem;
    color: var(--silver-gelatin);
    margin-top: 2rem;
}

.archive-rule {
    width: 120px;
    height: 1px;
    background: var(--slate-aperture);
    opacity: 0.3;
    margin-top: 1.5rem;
}

.closing-vignette {
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(ellipse at center, transparent 20%, var(--darkroom-black) 100%);
    opacity: 0;
    pointer-events: none;
    z-index: 50;
    transition: opacity 1s ease;
}

/* Fade in block */
.fade-in-block {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 600ms ease-out, transform 600ms ease-out;
}

.fade-in-block.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Tilt Card */
.tilt-card {
    transition: transform 200ms ease-out;
}

@media (max-width: 768px) {
    .letterbox {
        padding-bottom: 80%;
    }
    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .scene-content {
        padding: 2rem 5vw;
    }
}