/* =====================================================
   sora.garden — Cabinet of Tidal Geometries
   Tide-pool cabinet palette, naturalist's plate
   ===================================================== */

:root {
    --c-bg-light: #F5F0E8;
    --c-card: #FDFAF5;
    --c-card-border: #D4C8B4;
    --c-text-primary: #3A3228;
    --c-text-secondary: #8A7A68;
    --c-accent-line: #B8A88C;
    --c-shell-stroke: #6B5C4A;
    --c-shell-fill-light: #E8DDD0;
    --c-shell-fill-accent: #C4A882;
    --c-bg-deep: #2A2520;
    --c-deep-text: #D4C8B8;

    --f-display: 'Playfair Display', 'Lora', Georgia, serif;
    --f-body: 'Lora', Georgia, 'Times New Roman', serif;
    --f-mono: 'JetBrains Mono', 'Courier New', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--f-body);
    color: var(--c-text-primary);
    background: var(--c-bg-light);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------------------------------------------------------
   Paper noise overlay (page-wide tactile parchment grain)
   --------------------------------------------------------- */
.paper-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.18;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='280' height='280'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.78' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.23 0 0 0 0 0.20 0 0 0 0 0.16 0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ---------------------------------------------------------
   Zone Indicator (fixed left margin, vertical writing)
   --------------------------------------------------------- */
.zone-indicator {
    position: fixed;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    z-index: 50;
    transition: color 600ms ease, opacity 400ms ease;
    color: var(--c-text-secondary);
}

.zone-bullet {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 0 4px rgba(184, 168, 140, 0.18);
    transition: background 500ms ease, box-shadow 500ms ease;
}

.zone-text {
    font-family: var(--f-mono);
    font-weight: 300;
    font-size: 9px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    color: currentColor;
    transition: color 500ms ease;
    white-space: nowrap;
}

body.is-deep .zone-indicator { color: var(--c-deep-text); }
body.is-deep .zone-bullet {
    background: var(--c-deep-text);
    box-shadow: 0 0 0 4px rgba(212, 184, 184, 0.12);
}

/* ---------------------------------------------------------
   ZONE 1 — The Surface
   --------------------------------------------------------- */
.surface {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    z-index: 2;
}

.surface-inner {
    position: relative;
    text-align: center;
    max-width: 820px;
    width: 100%;
    transform: translateY(-4vh);
}

.catalog-no {
    display: block;
    font-family: var(--f-mono);
    font-weight: 400;
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--c-text-secondary);
    margin-bottom: 56px;
    opacity: 0;
    transform: translateY(8px);
    animation: surfaceFade 1100ms ease-out 200ms forwards;
}

.title-block {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    margin-bottom: 28px;
    opacity: 0;
    transform: translateY(12px);
    animation: surfaceFade 1300ms ease-out 450ms forwards;
}

.site-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(48px, 7.5vw, 76px);
    letter-spacing: -0.01em;
    color: var(--c-text-primary);
    line-height: 1;
    font-style: italic;
}

.rule {
    display: inline-block;
    height: 1px;
    background: var(--c-accent-line);
}

.rule-left, .rule-right {
    width: 80px;
    transform: scaleX(0);
    transform-origin: right center;
    animation: ruleGrow 1400ms cubic-bezier(0.2, 0.8, 0.2, 1) 700ms forwards;
}

.rule-right { transform-origin: left center; }

.rule-full {
    display: block;
    width: 100%;
    height: 1px;
    background: var(--c-accent-line);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 1400ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.rule-full.is-in { transform: scaleX(1); }

.rule-dark {
    background: rgba(212, 200, 184, 0.35);
}

.subtitle {
    font-family: var(--f-body);
    font-weight: 400;
    font-style: italic;
    font-size: 18px;
    line-height: 1.7;
    color: var(--c-text-secondary);
    margin: 0 auto 48px;
    max-width: 540px;
    opacity: 0;
    transform: translateY(8px);
    animation: surfaceFade 1200ms ease-out 950ms forwards;
}

.surface-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--c-text-secondary);
    opacity: 0;
    transform: translateY(8px);
    animation: surfaceFade 1200ms ease-out 1200ms forwards;
}

.surface-foot {
    margin-top: 96px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--c-text-secondary);
    opacity: 0;
    animation: surfaceFade 1200ms ease-out 1700ms forwards;
}

.arrow-down {
    font-size: 14px;
    animation: drift 2400ms ease-in-out infinite;
}

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

@keyframes ruleGrow {
    to { transform: scaleX(1); }
}

@keyframes drift {
    0%, 100% { transform: translateY(0); opacity: 0.7; }
    50% { transform: translateY(6px); opacity: 1; }
}

/* ---------------------------------------------------------
   ZONE 2 — The Collection
   --------------------------------------------------------- */
.collection {
    position: relative;
    padding: 48px 80px 96px;
    background: var(--c-bg-light);
    z-index: 2;
}

.collection-header {
    max-width: 720px;
    margin: 0 auto 64px;
    text-align: left;
    padding-top: 24px;
}

.zone-marker {
    display: block;
    font-family: var(--f-display);
    font-style: italic;
    font-size: 14px;
    color: var(--c-text-secondary);
    margin-bottom: 14px;
    letter-spacing: 0.12em;
}

.zone-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-style: italic;
    font-size: 42px;
    color: var(--c-text-primary);
    margin-bottom: 22px;
    line-height: 1.1;
}

.zone-lead {
    font-family: var(--f-body);
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text-primary);
    max-width: 580px;
    margin-bottom: 36px;
}

/* Masonry grid via CSS Grid auto-rows */
.masonry {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    grid-auto-rows: 10px;
    gap: 18px;
    max-width: 1280px;
    margin: 0 auto;
}

/* ---------------------------------------------------------
   Specimen Cards
   --------------------------------------------------------- */
.card {
    grid-row-end: span var(--span, 30);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 700ms ease-out, transform 700ms ease-out;
}

.card.is-in {
    opacity: 1;
    transform: translateY(0);
}

.card-frame {
    position: relative;
    height: 100%;
    background: var(--c-card);
    border: 1px solid var(--c-card-border);
    padding: 22px 22px 20px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: border-color 400ms ease, transform 600ms ease;
}

.card-frame::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.42;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='nn'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.34 0 0 0 0 0.30 0 0 0 0 0.24 0 0 0 0.07 0'/></filter><rect width='100%' height='100%' filter='url(%23nn)'/></svg>");
}

.card-frame::after {
    content: "";
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    bottom: 6px;
    border: 1px solid rgba(184, 168, 140, 0.35);
    pointer-events: none;
}

.card:hover .card-frame {
    border-color: var(--c-shell-stroke);
}

.plate {
    position: relative;
    z-index: 2;
    align-self: flex-start;
    font-family: var(--f-mono);
    font-weight: 400;
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--c-text-secondary);
    margin-bottom: 14px;
}

.svg-stage {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 4px 12px;
    min-height: 0;
}

.svg-stage svg {
    width: 100%;
    height: 100%;
    max-height: 360px;
    overflow: visible;
}

.svg-stage svg path,
.svg-stage svg circle,
.svg-stage svg ellipse,
.svg-stage svg line {
    transition: stroke 600ms ease;
}

.svg-stage-text {
    align-items: center;
    justify-content: center;
}

.equation {
    text-align: center;
    color: var(--c-text-primary);
    font-family: var(--f-display);
    font-style: italic;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    padding: 12px 16px;
}

.eq-major {
    font-size: 44px;
    line-height: 1;
    letter-spacing: 0.01em;
}

.eq-major sup {
    font-size: 0.55em;
    vertical-align: super;
}

.eq-line {
    display: block;
    width: 60px;
    height: 1px;
    background: var(--c-accent-line);
}

.eq-minor {
    font-family: var(--f-mono);
    font-style: normal;
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--c-text-secondary);
}

.card-rule {
    position: relative;
    z-index: 2;
    height: 1px;
    background: var(--c-accent-line);
    margin: 6px 0 12px;
    opacity: 0.7;
}

.card-meta {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.label-line {
    font-family: var(--f-mono);
    font-weight: 400;
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--c-text-secondary);
    line-height: 1.5;
}

.label-line:first-child {
    color: var(--c-text-primary);
    letter-spacing: 0.08em;
}

/* card variants — ensure svg fills proportionally */
.card-tall .svg-stage { padding: 14px 8px 18px; }
.card-wide .svg-stage { padding: 6px 8px 12px; }

/* Grid placement adjustments — let some cards span 2 cols on wider grids */
@media (min-width: 980px) {
    .card[data-card="1"] { grid-column: span 1; }
    .card[data-card="3"] { grid-column: span 2; }
    .card[data-card="8"] { grid-column: span 2; }
    .card[data-card="12"] { grid-column: span 2; }
}

@media (min-width: 1280px) {
    .masonry {
        grid-template-columns: repeat(4, 1fr);
    }
    .card[data-card="3"] { grid-column: span 2; }
    .card[data-card="8"] { grid-column: span 2; }
    .card[data-card="12"] { grid-column: span 2; }
    .card[data-card="6"] { grid-row-end: span 46; }
}

.collection-footer {
    max-width: 720px;
    margin: 88px auto 0;
    text-align: center;
}

.footer-note {
    font-family: var(--f-body);
    font-style: italic;
    font-size: 14px;
    color: var(--c-text-secondary);
    margin-top: 20px;
    letter-spacing: 0.04em;
}

/* ---------------------------------------------------------
   ZONE 3 — The Depth
   --------------------------------------------------------- */
.depth {
    position: relative;
    padding: 140px 40px 120px;
    background: linear-gradient(to bottom, var(--c-bg-light) 0%, #6B5C4A 22%, #3A3228 55%, var(--c-bg-deep) 100%);
    color: var(--c-deep-text);
    z-index: 2;
}

.depth-inner {
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
}

.depth-marker {
    color: rgba(212, 200, 184, 0.6);
    margin-bottom: 18px;
}

.depth-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-style: italic;
    font-size: 44px;
    color: var(--c-deep-text);
    margin-bottom: 28px;
    line-height: 1.1;
}

.depth-passage {
    font-family: var(--f-body);
    font-size: 17px;
    line-height: 1.95;
    color: var(--c-deep-text);
    margin: 32px 0;
    max-width: 640px;
}

.depth-passage em {
    font-family: var(--f-display);
    font-style: italic;
    color: #E8DDD0;
}

.depth-signature {
    text-align: center;
    font-family: var(--f-display);
    font-style: italic;
    font-size: 22px;
    color: var(--c-deep-text);
    margin: 44px 0 14px;
    letter-spacing: 0.06em;
}

.depth-meta {
    text-align: center;
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: rgba(212, 200, 184, 0.55);
}

/* ---------------------------------------------------------
   Responsive
   --------------------------------------------------------- */
@media (max-width: 880px) {
    .zone-indicator { left: 12px; gap: 10px; }
    .zone-text { font-size: 8px; letter-spacing: 0.18em; }
    .collection { padding: 32px 28px 72px; }
    .zone-title { font-size: 34px; }
    .depth { padding: 100px 26px 90px; }
    .depth-title { font-size: 34px; }
    .eq-major { font-size: 34px; }
}

@media (max-width: 620px) {
    .zone-indicator { display: none; }
    .surface { padding: 60px 24px; }
    .site-title { font-size: 44px; }
    .rule-left, .rule-right { width: 36px; }
    .surface-meta { gap: 8px; font-size: 9px; }
    .masonry {
        grid-template-columns: 1fr;
    }
    .card[data-card="3"],
    .card[data-card="8"],
    .card[data-card="12"] { grid-column: span 1; }
    .collection { padding: 24px 18px 60px; }
    .depth { padding: 80px 20px 80px; }
    .depth-passage { font-size: 16px; }
}