/* ============================================
   archaic.studio - Dark Academia Immersive Scroll
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #0F0A06;
    --bg-secondary: #2A0E16;
    --bg-tertiary: #08050A;
    --text-primary: #D8C8A8;
    --text-secondary: #A89878;
    --accent-primary: #C4A35A;
    --accent-secondary: #8B6914;
    --accent-tertiary: #6B1528;
    --current-bg: #0F0A06;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Cormorant Garamond', Garamond, serif;
    --font-accent: 'EB Garamond', Garamond, serif;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--current-bg);
    transition: background-color 800ms ease;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Hidden SVG Defs --- */
.svg-defs {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* --- Noise Grain Overlay --- */
#grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.06;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-repeat: repeat;
}

body[data-room="2"] ~ #grain-overlay,
body[data-room="2"] #grain-overlay {
    opacity: 0.08;
}

/* --- Bookmark Progress Indicator --- */
#bookmark-progress {
    position: fixed;
    top: 0;
    right: 16px;
    width: 2px;
    height: 100vh;
    z-index: 100;
    pointer-events: none;
}

#bookmark-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 0%;
    background-color: var(--accent-primary);
    box-shadow: 0 0 6px rgba(196, 163, 90, 0.3);
    transition: height 100ms linear;
}

#bookmark-marker {
    position: absolute;
    top: 0%;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-accent);
    font-size: 12px;
    color: var(--accent-primary);
    line-height: 1;
    text-shadow: 0 0 4px rgba(196, 163, 90, 0.4);
}

/* --- Room (Section) Base --- */
.room {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

/* --- Room I: The Entrance Hall --- */
#room-1 {
    min-height: 100vh;
    flex-direction: column;
    text-align: center;
}

.room-1-content {
    opacity: 0;
    animation: fadeInEntrance 2s ease forwards;
}

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

.entrance-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.5rem, 8vw, 6rem);
    color: var(--accent-primary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 80px rgba(196, 163, 90, 0.12);
}

.entrance-title:hover {
    text-shadow: 0 0 80px rgba(196, 163, 90, 0.25);
    transition: text-shadow 600ms ease-out;
}

.entrance-epigraph {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    line-height: 1.6;
}

/* --- Room II: The Reading Table --- */
#room-2 {
    min-height: 100vh;
    position: relative;
}

.fleuron-margin {
    position: absolute;
    left: 40px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 24px;
    font-size: 1.2rem;
    color: var(--accent-secondary);
    opacity: 0.25;
    z-index: 3;
}

.reading-column {
    max-width: 680px;
    width: 90%;
    margin: 0 auto;
    padding: 80px 20px;
}

.reading-column h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: var(--text-primary);
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
    text-align: center;
}

.reading-column p {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.35rem);
    line-height: 1.9;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

/* --- Fleuron Dividers --- */
.fleuron-divider {
    text-align: center;
    font-size: 1rem;
    color: var(--accent-secondary);
    opacity: 0.4;
    margin: 1.5rem 0 2rem;
    letter-spacing: 0.5em;
}

/* --- Room III: The Archive --- */
#room-3 {
    min-height: 150vh;
    align-items: flex-start;
    padding: 100px 0;
}

.archive-container {
    max-width: 960px;
    width: 90%;
    margin: 0 auto;
}

.archive-container h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: var(--text-primary);
    letter-spacing: 0.04em;
    text-align: center;
    margin-bottom: 0.5rem;
}

/* --- Folio Grid --- */
.folio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.folio-card {
    border: 1px solid rgba(196, 163, 90, 0.4);
    background: transparent;
    overflow: hidden;
    transition: border-color 400ms ease, box-shadow 600ms ease-out, transform 400ms ease;
}

.folio-card:hover {
    border-color: rgba(196, 163, 90, 0.8);
    box-shadow: 0 0 80px 20px rgba(196, 163, 90, 0.12);
}

.folio-left {
    transform: translateY(0px) rotate(-0.5deg);
}

.folio-right {
    transform: translateY(60px) rotate(0.5deg);
}

.folio-left:hover {
    transform: translateY(0px) rotate(-1deg);
}

.folio-right:hover {
    transform: translateY(60px) rotate(1deg);
}

.folio-image {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.folio-image-placeholder {
    width: 100%;
    display: block;
}

.folio-image-placeholder svg {
    width: 100%;
    height: auto;
    display: block;
    filter: grayscale(100%) sepia(40%) contrast(1.1) brightness(0.8);
}

.folio-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #2A0E16;
    mix-blend-mode: multiply;
    opacity: 0.3;
    pointer-events: none;
}

.folio-text {
    padding: 24px;
}

.folio-text h3 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    color: var(--text-primary);
    letter-spacing: 0.03em;
    margin-bottom: 0.4rem;
}

.folio-date {
    font-family: var(--font-accent);
    font-variant: small-caps;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

.folio-text p:last-child {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 1.4vw, 1.1rem);
    line-height: 1.7;
    color: var(--text-secondary);
}

/* --- Room IV: The Inner Sanctum --- */
#room-4 {
    min-height: 100vh;
    flex-direction: column;
    text-align: center;
    padding: 60px 20px;
}

.sanctum-content {
    max-width: 800px;
    width: 90%;
}

.sanctum-content blockquote {
    margin-bottom: 2rem;
}

.quote-text {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--text-primary);
    letter-spacing: 0.06em;
    line-height: 1.4;
}

.quote-text .char {
    opacity: 0;
    transition: opacity 80ms ease;
}

.quote-text .char.revealed {
    opacity: 1;
}

.vine-rule {
    max-width: 400px;
    margin: 2rem auto;
}

.vine-rule svg {
    width: 100%;
    height: 24px;
}

.quote-attribution {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
}

/* --- Room V: The Colophon --- */
#room-5 {
    min-height: 100vh;
    flex-direction: column;
    text-align: center;
}

.colophon-border {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background-image: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 20px,
        transparent 20px
    );
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.colophon-border::before {
    content: "❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦ ❧ ❦ ✦";
    font-family: var(--font-accent);
    font-size: 0.85rem;
    color: var(--accent-secondary);
    opacity: 0.3;
    white-space: nowrap;
    letter-spacing: 0.3em;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.colophon-content {
    max-width: 500px;
    width: 90%;
}

.colophon-fleurons {
    margin: 1rem 0;
}

.colophon-label {
    font-family: var(--font-accent);
    font-variant: small-caps;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.colophon-email {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
}

.colophon-email a {
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-tertiary);
    transition: border-color 300ms ease;
}

.colophon-email a:hover {
    border-color: var(--accent-primary);
}

.colophon-year {
    font-family: var(--font-accent);
    font-variant: small-caps;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.colophon-note {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
    opacity: 0.7;
}

/* --- Marginalia --- */
.marginalia {
    position: absolute;
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 0.7rem;
    color: var(--text-secondary);
    opacity: 0.15;
    letter-spacing: 0.1em;
    pointer-events: none;
    z-index: 3;
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

.marginalia-left {
    left: 20px;
    transform: rotate(180deg);
}

.marginalia-right {
    right: 20px;
}

/* --- Reveal Animations --- */
.reveal-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-element.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-card {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 1200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-card.visible {
    opacity: 1;
}

.reveal-card.visible.folio-left {
    transform: scale(1) translateY(0px) rotate(-0.5deg);
}

.reveal-card.visible.folio-right {
    transform: scale(1) translateY(60px) rotate(0.5deg);
}

/* Stagger delays for reading column paragraphs */
.reading-column .reveal-element:nth-child(1) { transition-delay: 0ms; }
.reading-column .reveal-element:nth-child(2) { transition-delay: 200ms; }
.reading-column .reveal-element:nth-child(3) { transition-delay: 400ms; }
.reading-column .reveal-element:nth-child(4) { transition-delay: 600ms; }
.reading-column .reveal-element:nth-child(5) { transition-delay: 800ms; }

/* Stagger delays for folio cards */
.folio-card:nth-child(1) { transition-delay: 0ms; }
.folio-card:nth-child(2) { transition-delay: 200ms; }
.folio-card:nth-child(3) { transition-delay: 400ms; }
.folio-card:nth-child(4) { transition-delay: 600ms; }

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
    .folio-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .folio-left,
    .folio-right {
        transform: translateY(0) rotate(0deg);
    }

    .folio-left:hover,
    .folio-right:hover {
        transform: translateY(0) rotate(0deg);
    }

    .reveal-card.visible.folio-left,
    .reveal-card.visible.folio-right {
        transform: scale(1) translateY(0) rotate(0deg);
    }

    #bookmark-progress {
        right: auto;
        left: 8px;
    }

    .fleuron-margin {
        display: none;
    }
}

@media (max-width: 1024px) {
    .marginalia {
        display: none;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    .reveal-element,
    .reveal-card {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .room-1-content {
        opacity: 1;
        animation: none;
    }

    .quote-text .char {
        opacity: 1;
        transition: none;
    }

    body {
        transition: none;
    }
}

/* --- Selection --- */
::selection {
    background-color: var(--accent-tertiary);
    color: var(--text-primary);
}