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

:root {
    --burgundy-deep: #5c1a2a;
    --burgundy-warm: #8b3a4a;
    --cream-parchment: #f8f3eb;
    --warm-ivory: #ede5d8;
    --charcoal-ink: #2d2420;
    --stone-gray: #8a7e72;
    --gold-patina: #b8944f;
    --border-light: #d4c8b8;
    --burgundy-wash: #3d1f2b;
    --cedar: #8a6e5e;
    --light-cream: #f5f0e8;
    --ease-wabi: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Libre Baskerville', Georgia, serif;
    background-color: var(--cream-parchment);
    color: var(--charcoal-ink);
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    line-height: 1.78;
    letter-spacing: 0.005em;
    overflow-x: hidden;
    position: relative;
}

/* Hanji paper texture on body */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.04;
    filter: url(#hanji);
    background: white;
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
    position: fixed;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60vh;
    background: rgba(92, 26, 42, 0.1);
    z-index: 100;
    border-radius: 2px;
}

.scroll-indicator-bar {
    width: 100%;
    height: 0%;
    background: var(--burgundy-deep);
    border-radius: 2px;
    transform-origin: top;
    transition: height 0.3s var(--ease-wabi);
}

/* ===== Vertical Name ===== */
.vertical-name {
    position: fixed;
    top: 20px;
    left: 16px;
    z-index: 101;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    opacity: 0.4;
    transition: opacity 0.4s var(--ease-wabi);
}

.vertical-name:hover {
    opacity: 1;
}

.vertical-name span {
    font-family: 'Cormorant Garamond', serif;
    font-size: 12px;
    letter-spacing: 0.4em;
    color: var(--cedar);
    line-height: 1.4;
    text-transform: lowercase;
}

/* ===== Navigation Dots ===== */
.nav-dots {
    position: fixed;
    left: 22px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 101;
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.4s var(--ease-wabi);
}

.vertical-name:hover ~ .nav-dots,
.nav-dots:hover {
    opacity: 1;
}

.nav-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(92, 26, 42, 0.3);
    cursor: pointer;
    transition: background 0.3s var(--ease-wabi), transform 0.3s var(--ease-wabi);
}

.nav-dot.active {
    background: var(--burgundy-deep);
    transform: scale(1.3);
}

/* ===== Zone Base ===== */
.zone {
    position: relative;
    width: 100%;
}

/* ===== Zone 1: Threshold ===== */
.zone-threshold {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cream-parchment);
    overflow: hidden;
}

.lens-flare-opening {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 15% 20%, rgba(184, 148, 79, 0.12) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 3s var(--ease-wabi);
    pointer-events: none;
}

.lens-flare-opening.visible {
    opacity: 1;
}

.threshold-content {
    text-align: center;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 1s var(--ease-wabi), transform 1s var(--ease-wabi);
}

.threshold-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.threshold-title {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(3.5rem, 8vw, 7rem);
    color: var(--charcoal-ink);
    letter-spacing: 0.08em;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

.threshold-subtitle {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: 0.875rem;
    color: var(--stone-gray);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* ===== Zone 2: Collection ===== */
.zone-collection {
    min-height: 120vh;
    background: var(--cream-parchment);
    padding: clamp(4rem, 8vw, 8rem) clamp(2rem, 6vw, 6rem);
    padding-left: clamp(3rem, 8vw, 8rem);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: clamp(16px, 2.5vw, 32px);
    max-width: 1400px;
    margin: 0 auto;
}

/* ===== Cards ===== */
.card {
    background: var(--warm-ivory);
    border: 1px solid var(--border-light);
    border-radius: 2px 2px 0 0;
    padding: clamp(1.5rem, 3vw, 2.5rem);
    position: relative;
    overflow: hidden;
    transition: border-color 0.4s var(--ease-wabi), transform 0.4s var(--ease-wabi), box-shadow 0.4s var(--ease-wabi);
    box-shadow: -40px 40px 80px rgba(184, 148, 79, 0.08);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 60%;
    background: radial-gradient(ellipse at 80% 20%, rgba(184, 148, 79, 0.08) 0%, transparent 60%);
    pointer-events: none;
    transition: opacity 0.4s var(--ease-wabi);
}

.card:hover {
    border-color: var(--burgundy-warm);
    transform: translateY(-4px);
    box-shadow: -40px 40px 80px rgba(184, 148, 79, 0.15);
}

.card:hover::before {
    opacity: 1.5;
}

.card-empty {
    background: var(--light-cream);
    border: 1px solid rgba(212, 200, 184, 0.4);
    box-shadow: none;
    pointer-events: none;
}

.card-empty::before {
    display: none;
}

/* Card sizes */
.card-1x1 { grid-column: span 3; }
.card-1x2 { grid-column: span 3; grid-row: span 2; }
.card-2x1 { grid-column: span 6; }
.card-2x2 { grid-column: span 6; grid-row: span 2; }

/* Featured card */
.card-featured {
    clip-path: polygon(0 4%, 3% 0, 97% 0, 100% 4%, 100% 100%, 0 100%);
}

.dancheong-border {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: repeating-linear-gradient(
        90deg,
        var(--burgundy-deep) 0px,
        var(--burgundy-deep) 4px,
        var(--gold-patina) 4px,
        var(--gold-patina) 8px,
        var(--burgundy-warm) 8px,
        var(--burgundy-warm) 12px,
        var(--cream-parchment) 12px,
        var(--cream-parchment) 16px
    );
}

.card-heading {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 400;
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    color: var(--burgundy-warm);
    line-height: 1.3;
    margin-bottom: 1rem;
    letter-spacing: -0.015em;
}

.card-body {
    color: var(--charcoal-ink);
    margin-bottom: 1rem;
    font-size: clamp(0.9rem, 1.4vw, 1.05rem);
    line-height: 1.78;
}

.card-label {
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    font-size: clamp(0.7rem, 1vw, 0.8rem);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--stone-gray);
    display: block;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

/* Stagger animation */
.stagger-card {
    opacity: 0;
    transform: translateY(24px);
}

.stagger-card.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s var(--ease-wabi), transform 0.6s var(--ease-wabi);
}

/* ===== Zone 3: Reflection ===== */
.zone-reflection {
    min-height: 100vh;
    background: var(--warm-ivory);
    background-image: linear-gradient(to bottom, var(--warm-ivory), var(--warm-ivory) 60%, rgba(61, 31, 43, 0.08));
    padding: clamp(6rem, 12vw, 12rem) clamp(2rem, 6vw, 6rem);
    padding-left: clamp(3rem, 8vw, 8rem);
}

.reflection-heading-container {
    max-width: 900px;
    margin: 0 auto 4rem;
}

.reflection-heading {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(2.2rem, 5vw, 4.5rem);
    color: var(--charcoal-ink);
    line-height: 1.15;
    letter-spacing: -0.015em;
}

/* Ensō */
.enso-container {
    display: flex;
    justify-content: center;
    margin: 4rem 0;
}

.enso-path {
    stroke-width: 2;
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    opacity: 0.6;
}

.enso-path.drawn {
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 2.5s var(--ease-wabi);
}

/* Reflection grid */
.reflection-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: clamp(16px, 2.5vw, 32px);
    max-width: 1400px;
    margin: 0 auto;
}

.card-reflection {
    grid-column: span 4;
    background: var(--cream-parchment);
}

.card-reflection:first-child {
    grid-column: 2 / span 4;
}

.card-reflection:last-child {
    grid-column: 8 / span 4;
}

.card-body-reflection {
    line-height: 2.0;
}

/* ===== Footer ===== */
.zone-footer {
    padding: 4rem 2rem 3rem;
    text-align: center;
    background: var(--warm-ivory);
}

.footer-rule {
    width: 120px;
    height: 1px;
    background: var(--border-light);
    margin: 0 auto 2rem;
}

.footer-domain {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--stone-gray);
    margin-bottom: 0.5rem;
}

.footer-korean {
    font-family: 'Libre Baskerville', serif;
    font-style: italic;
    font-size: 0.75rem;
    color: var(--stone-gray);
}

/* ===== Gold accent dots at card junctions ===== */
.junction-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gold-patina);
    opacity: 0.4;
    pointer-events: none;
    z-index: 10;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .card-1x1,
    .card-1x2,
    .card-2x1,
    .card-2x2 {
        grid-column: span 6;
        grid-row: span 1;
    }

    .card-2x2 {
        grid-column: span 12;
    }

    .card-empty {
        display: none;
    }

    .card-reflection:first-child,
    .card-reflection:last-child {
        grid-column: span 12;
    }

    .scroll-indicator,
    .vertical-name,
    .nav-dots {
        display: none;
    }

    .zone-collection,
    .zone-reflection {
        padding-left: clamp(2rem, 6vw, 6rem);
    }
}

@media (max-width: 600px) {
    .card-1x1,
    .card-1x2,
    .card-2x1,
    .card-2x2 {
        grid-column: span 12;
    }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .stagger-card {
        opacity: 1;
        transform: none;
    }

    .enso-path {
        stroke-dashoffset: 0;
    }
}