/* ============================================
   archetype.boo - Dark Academia Cabinet of Curiosities
   ============================================ */

/* === Paper Noise Texture (base64 4x4 tile) === */
/* Subtle grain for parchment feel */

/* === CSS Custom Properties === */
:root {
    --bg-parchment: #f4ece1;
    --bg-dark: #1c1410;
    --text-primary: #2a1a0c;
    --text-on-dark: #e8ddd0;
    --accent-orange: #c45d1a;
    --accent-brass: #9a7b4f;
    --accent-sage: #6b7c5e;
    --border-sepia: #5c3a1e;
    --card-surface: #f9f4ec;
    --hover-orange: #a34912;
    --font-headline: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Serif 4', 'Georgia', serif;
    --font-accent: 'Caveat', cursive;
    --font-ui: 'IBM Plex Sans', 'Helvetica Neue', sans-serif;
    --margin-left: clamp(2rem, 5vw, 6rem);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-parchment);
    background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAAJElEQVQYV2P4/5/hPwMDA8P/fw8ZGBgYGP7//cPA8P8fAwMAYEcI/wBkMCMAAAAASUVORK5CYII=');
    background-repeat: repeat;
    overflow-x: hidden;
    position: relative;
}

/* === Bookbinding Left Border === */
.bookbinding-border {
    position: fixed;
    left: 0;
    top: 0;
    width: 8px;
    height: 100vh;
    z-index: 100;
    background: repeating-linear-gradient(
        180deg,
        var(--border-sepia) 0px,
        var(--border-sepia) 4px,
        transparent 4px,
        transparent 8px,
        var(--accent-brass) 8px,
        var(--accent-brass) 10px,
        transparent 10px,
        transparent 14px,
        var(--border-sepia) 14px,
        var(--border-sepia) 18px,
        transparent 18px,
        transparent 24px
    );
    opacity: 0.2;
}

/* === Navigation === */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--margin-left);
    padding-right: 2rem;
    background: transparent;
    transition: background 0.4s ease;
}

.nav-bar.scrolled {
    background: rgba(244, 236, 225, 0.95);
    box-shadow: 0 1px 0 var(--border-sepia);
}

.nav-wordmark {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.15em;
    text-transform: lowercase;
    font-variant: small-caps;
    color: var(--text-on-dark);
    transition: color 0.4s ease;
}

.nav-bar.scrolled .nav-wordmark {
    color: var(--text-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-family: var(--font-accent);
    font-size: 1.5rem;
    color: var(--text-on-dark);
    cursor: pointer;
    transition: color 0.4s ease;
}

.nav-bar.scrolled .nav-toggle {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    font-family: var(--font-headline);
    font-variant: small-caps;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    color: var(--text-on-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-bar.scrolled .nav-links a {
    color: var(--text-primary);
}

.nav-links a:hover {
    color: var(--accent-orange);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: 1rem var(--margin-left);
        background: var(--bg-parchment);
        box-shadow: 0 2px 8px rgba(42, 26, 12, 0.15);
        gap: 0.75rem;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-links a {
        color: var(--text-primary);
    }
}

/* === Threshold (Hero) === */
.threshold {
    position: relative;
    min-height: 100vh;
    background: var(--bg-dark);
    overflow: hidden;
    display: flex;
    align-items: center;
}

.threshold-dark-overlay {
    position: absolute;
    inset: 0;
    background: var(--bg-dark);
    z-index: 1;
}

.threshold-content {
    position: relative;
    z-index: 2;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 2fr;
    min-height: 100vh;
    align-items: center;
    padding-left: var(--margin-left);
}

.threshold-title {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
}

.threshold-title .hero-letter {
    font-family: var(--font-headline);
    font-weight: 900;
    font-size: clamp(4rem, 10vw, 8rem);
    color: var(--text-on-dark);
    line-height: 0.85;
    letter-spacing: -0.02em;
    opacity: 0;
    transform: translateY(8px);
    animation: letterFadeIn 0.5s ease forwards;
}

@keyframes letterFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Isometric Book (Hero) === */
.threshold-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.isometric-book {
    width: 200px;
    height: 200px;
    position: relative;
    transform-style: preserve-3d;
    animation: bookBreath 20s ease-in-out infinite;
}

@keyframes bookBreath {
    0%, 100% { transform: rotateY(-5deg); }
    50% { transform: rotateY(5deg); }
}

.book-base,
.book-cover-back {
    position: absolute;
    width: 140px;
    height: 20px;
    transform-style: preserve-3d;
    transform: rotateX(60deg) rotateZ(-45deg);
}

.book-base {
    bottom: 40%;
    left: 15%;
}

.book-cover-back {
    bottom: calc(40% + 50px);
    left: 15%;
}

.book-face {
    position: absolute;
}

.book-face.book-top {
    width: 140px;
    height: 100px;
    background: var(--accent-orange);
    transform: translateZ(10px);
    border: 1px solid var(--border-sepia);
}

.book-face.book-left {
    width: 140px;
    height: 20px;
    background: var(--border-sepia);
    transform: rotateX(-90deg) translateZ(-10px);
    transform-origin: bottom;
}

.book-face.book-right {
    width: 20px;
    height: 100px;
    background: var(--accent-brass);
    transform: rotateY(90deg) translateZ(120px);
    transform-origin: right;
}

.book-pages {
    position: absolute;
    bottom: calc(40% + 10px);
    left: calc(15% + 10px);
    width: 120px;
    height: 40px;
    transform-style: preserve-3d;
    transform: rotateX(60deg) rotateZ(-45deg);
}

.page {
    position: absolute;
    width: 120px;
    height: 80px;
    background: var(--text-on-dark);
    border: 1px solid var(--accent-brass);
    opacity: 0.8;
}

.page-1 { transform: translateZ(12px) translateY(-2px); }
.page-2 { transform: translateZ(18px) translateY(-6px); }
.page-3 { transform: translateZ(24px) translateY(-10px); }

/* === Scroll Transition === */
.scroll-transition {
    height: 30vh;
    position: relative;
    background: linear-gradient(to bottom, var(--bg-dark), var(--bg-parchment));
}

/* === Section Ornaments === */
.section-ornament {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    color: var(--accent-brass);
    text-align: left;
    margin-bottom: 0.75rem;
    margin-left: var(--margin-left);
}

.section-heading {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(2rem, 4.5vw, 4rem);
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--text-primary);
    margin-left: var(--margin-left);
    margin-bottom: 2.5rem;
}

.section-divider {
    display: flex;
    gap: 1.5rem;
    justify-content: flex-start;
    padding: 3rem 0;
    padding-left: var(--margin-left);
}

.section-divider .ornament {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    color: var(--accent-brass);
}

/* === Cabinet (Card Grid) === */
.cabinet {
    padding: 4rem 2rem 4rem 0;
    min-height: 100vh;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-left: var(--margin-left);
    margin-right: 2rem;
}

.card {
    position: relative;
    background: var(--card-surface);
    border: 1px solid var(--border-sepia);
    box-shadow: 2px 3px 0 var(--text-primary);
    padding: 1.75rem;
    transform: translateY(var(--offset, 0px));
    transition: transform 200ms ease, box-shadow 200ms ease;
    cursor: pointer;
    overflow: hidden;
    opacity: 0;
}

.card.visible {
    animation: cardEnter 0.5s ease forwards;
}

@keyframes cardEnter {
    from {
        opacity: 0;
        transform: translateY(calc(var(--offset, 0px) + 16px));
    }
    to {
        opacity: 1;
        transform: translateY(var(--offset, 0px));
    }
}

.card:hover {
    transform: translateY(calc(var(--offset, 0px) - 3px));
    box-shadow: 3px 6px 0 var(--text-primary);
}

/* Ripple pseudo-element */
.card::after {
    content: '';
    position: absolute;
    top: var(--ripple-y, 50%);
    left: var(--ripple-x, 50%);
    width: 40px;
    height: 40px;
    background: var(--accent-orange);
    opacity: 0;
    transform: scale(0);
    pointer-events: none;
}

.card.rippling::after {
    animation: rippleExpand 400ms ease-out forwards;
}

@keyframes rippleExpand {
    from {
        transform: scale(0);
        opacity: 0.15;
    }
    to {
        transform: scale(8);
        opacity: 0;
    }
}

.card-tall {
    grid-row: span 2;
}

.card-wide {
    grid-column: span 2;
}

@media (max-width: 768px) {
    .card-wide {
        grid-column: span 1;
    }
}

.card-category {
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-brass);
    margin-bottom: 0.75rem;
}

.card-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.card-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* === Card Isometric Icons === */
.card-iso-icon {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 48px;
    height: 48px;
    transform-style: preserve-3d;
}

.iso-container {
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transform: rotateX(60deg) rotateZ(-45deg);
    position: relative;
}

.iso-face {
    position: absolute;
}

.iso-face.iso-top {
    width: 30px;
    height: 30px;
    background: var(--accent-orange);
    transform: translateZ(15px);
}

.iso-face.iso-left {
    width: 30px;
    height: 15px;
    background: var(--border-sepia);
    transform: rotateX(-90deg) translateZ(-15px);
    transform-origin: bottom;
}

.iso-face.iso-right {
    width: 15px;
    height: 30px;
    background: var(--accent-brass);
    transform: rotateY(90deg) translateZ(15px);
    transform-origin: right;
}

/* Magnifier variant */
.iso-magnifier .iso-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 4px;
    height: 20px;
    background: var(--accent-brass);
    transform: rotate(-45deg);
    transform-origin: top;
}

.iso-magnifier .iso-face.iso-top {
    border-radius: 50%;
}

/* Specimen variant */
.iso-specimen .iso-face.iso-top {
    border-radius: 4px 4px 0 0;
    background: var(--accent-sage);
}

.iso-specimen .iso-face.iso-left {
    background: #4d5e42;
}

/* Compass variant */
.iso-compass .iso-face.iso-top {
    border-radius: 50%;
    background: var(--accent-brass);
    border: 2px solid var(--border-sepia);
}

/* Column variant */
.iso-column .iso-face.iso-top {
    width: 16px;
    height: 30px;
    margin-left: 7px;
    background: var(--accent-brass);
}

.iso-column .iso-face.iso-left {
    width: 16px;
    margin-left: 7px;
}

.iso-column .iso-face.iso-right {
    width: 15px;
    height: 30px;
}

.iso-column .iso-capital {
    position: absolute;
    top: -2px;
    left: 2px;
    width: 24px;
    height: 8px;
    background: var(--accent-orange);
    border-radius: 2px 2px 0 0;
    transform: rotateX(60deg) rotateZ(-45deg) translateZ(16px);
}

/* Quill variant */
.iso-quill .iso-face.iso-top {
    width: 8px;
    height: 30px;
    background: var(--text-primary);
    transform: translateZ(15px) rotate(15deg);
    border-radius: 0 6px 0 0;
}

.iso-quill .iso-face.iso-left {
    width: 8px;
    height: 15px;
    background: var(--border-sepia);
}

/* === Card Marginalia === */
.card-marginalia {
    border-top: 1px dashed var(--accent-brass);
    padding-top: 0.75rem;
    margin-top: auto;
    transform: rotate(-2deg);
    transform-origin: left center;
}

.marginalia-mark {
    font-family: var(--font-body);
    color: var(--accent-brass);
    margin-right: 0.25rem;
}

.marginalia-text {
    font-family: var(--font-accent);
    font-size: 0.9rem;
    color: var(--accent-brass);
    font-style: italic;
}

/* === About Section === */
.about-section {
    padding: 4rem 2rem 4rem 0;
    max-width: 720px;
    margin-left: 0;
    padding-left: var(--margin-left);
}

.about-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 1.25em;
}

.about-text em {
    font-style: italic;
    color: var(--accent-orange);
}

.pull-quote {
    margin: 2.5rem 0;
    padding: 1.5rem 0 1.5rem 1.5rem;
    border-left: 3px solid var(--accent-orange);
}

.pull-quote p {
    font-family: var(--font-accent);
    font-size: 1.4rem;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.pull-quote cite {
    font-family: var(--font-ui);
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--accent-brass);
    font-style: normal;
}

/* === Marginalia Footer === */
.marginalia-footer {
    background: var(--bg-dark);
    padding: 4rem 2rem 3rem 0;
    color: var(--text-on-dark);
    position: relative;
}

.marginalia-footer .section-ornament {
    color: var(--accent-brass);
}

.marginalia-heading {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--text-on-dark);
    margin-left: var(--margin-left);
    margin-bottom: 2rem;
}

.marginalia-notes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-left: var(--margin-left);
    margin-right: 2rem;
}

.margin-note {
    transform: rotate(var(--rotation, 0deg));
    padding: 1rem;
    border: 1px dashed var(--accent-brass);
    background: rgba(244, 236, 225, 0.04);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.margin-note.visible {
    opacity: 1;
}

.note-mark {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--accent-orange);
    margin-right: 0.35rem;
}

.note-text {
    font-family: var(--font-accent);
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-on-dark);
}

.note-text em {
    font-style: italic;
    color: var(--accent-brass);
}

.footer-colophon {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-sepia);
    margin-left: var(--margin-left);
    margin-right: 2rem;
}

.footer-colophon p {
    font-family: var(--font-ui);
    font-weight: 300;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    color: var(--accent-brass);
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .card {
        opacity: 1;
    }
    .margin-note {
        opacity: 1;
    }
}

/* === Mobile Adjustments === */
@media (max-width: 600px) {
    .threshold-content {
        grid-template-columns: 1fr;
        padding-right: 2rem;
    }
    .threshold-icon {
        display: none;
    }
    .threshold-title .hero-letter {
        font-size: clamp(3rem, 12vw, 5rem);
    }
    .card-grid {
        grid-template-columns: 1fr;
        margin-right: 1rem;
    }
    .card-tall {
        grid-row: span 1;
    }
    .marginalia-notes {
        grid-template-columns: 1fr;
        margin-right: 1rem;
    }
    .about-section {
        padding-right: 1rem;
    }
}