/* =========================================================
   bada.casa — styles.css
   Paper folio, futura-geometric, generative restraint.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
    --color-bg: #EDE6D6;        /* Paper Salt */
    --color-ink: #2B4A5A;       /* Deep Tide */
    --color-driftwood: #8A7A63; /* Driftwood */
    --color-seafoam: #9FB8B0;   /* Seafoam Dust */
    --color-coral: #C98C78;     /* Coral Memory */
    --color-sand: #D9C9A3;      /* Sun-bleached */

    --font-display: "Space Grotesk", "Futura", "Century Gothic", "Avenir Next", system-ui, sans-serif;
    --font-body: "Inter", "Futura", "Avenir Next", system-ui, sans-serif;
    --font-editorial: "Cormorant Garamond", "Lora", Georgia, serif;

    --type-13: 13px;
    --type-16: 16px;
    --type-18: 18px;
    --type-22: 22px;
    --type-28: 28px;
    --type-36: 36px;
    --type-44: 44px;
    --type-72: 72px;

    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 48px;
    --space-6: 72px;
    --space-7: 96px;
    --space-8: 128px;

    --rule: 1px solid var(--color-ink);
    --rule-soft: 1px solid var(--color-driftwood);
    --rule-dashed: 1px dashed var(--color-driftwood);

    --motion-fast: 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --motion-mid: 380ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --motion-slow: 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg { display: block; max-width: 100%; }
blockquote { margin: 0; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }

/* ---------- Base ---------- */
body {
    background: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: var(--type-18);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 12% 18%, rgba(217, 201, 163, 0.35) 0%, transparent 38%),
        radial-gradient(circle at 88% 76%, rgba(159, 184, 176, 0.18) 0%, transparent 42%),
        repeating-linear-gradient(0deg, transparent 0 39px, rgba(138, 122, 99, 0.04) 39px 40px);
    background-attachment: fixed;
}

/* ---------- Masthead ---------- */
.masthead {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    border-bottom: var(--rule);
}

.wordmark {
    font-family: var(--font-display);
    font-size: var(--type-22);
    letter-spacing: 0.02em;
    font-weight: 500;
    color: var(--color-ink);
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
}
.wordmark__dot {
    color: var(--color-coral);
    font-weight: 600;
    transform: translateY(-2px);
}
.wordmark__lead { font-weight: 600; }
.wordmark__tail {
    color: var(--color-driftwood);
    font-weight: 400;
}

.masthead__mark {
    justify-self: center;
    color: var(--color-driftwood);
    opacity: 0.85;
    animation: tide-breath 9s ease-in-out infinite;
}

@keyframes tide-breath {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.primary-nav ul {
    display: flex;
    gap: var(--space-3);
}
.primary-nav a {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-ink);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    position: relative;
    transition: color var(--motion-fast);
}
.primary-nav a::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 0;
    bottom: 2px;
    height: 1px;
    background: var(--color-driftwood);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--motion-mid);
}
.primary-nav a:hover { color: var(--color-coral); }
.primary-nav a:hover::after { transform: scaleX(1); }

.nav__glyph {
    width: 10px;
    height: 10px;
    border: 1px solid currentColor;
    border-radius: 50%;
    display: inline-block;
    transition: transform var(--motion-mid), border-radius var(--motion-mid);
}
.primary-nav a:hover .nav__glyph {
    transform: rotate(180deg);
    border-radius: 0 50% 50% 0;
    background: var(--color-coral);
    border-color: var(--color-coral);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: var(--space-7) var(--space-5) var(--space-6);
    overflow: hidden;
}
.hero__rule {
    position: absolute;
    left: var(--space-5);
    right: var(--space-5);
    top: var(--space-5);
    height: 1px;
    background: var(--color-driftwood);
    opacity: 0.5;
}
.hero__rule--bottom {
    top: auto;
    bottom: var(--space-4);
    background: repeating-linear-gradient(90deg, var(--color-driftwood) 0 6px, transparent 6px 12px);
    height: 1px;
    opacity: 0.6;
}
.hero__inner {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: var(--space-6);
    align-items: center;
    max-width: 1320px;
    margin: 0 auto;
}
.hero__eyebrow {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.32em;
    color: var(--color-driftwood);
    margin-bottom: var(--space-3);
    padding-left: 32px;
    position: relative;
}
.hero__eyebrow::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 22px;
    height: 1px;
    background: var(--color-coral);
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(120px, 22vw, 280px);
    line-height: 0.85;
    letter-spacing: -0.04em;
    color: var(--color-ink);
    margin-bottom: var(--space-3);
    font-weight: 500;
    position: relative;
}
.hero__title::after {
    content: "바다 · sea, remembered";
    position: absolute;
    left: 4px;
    bottom: -10px;
    font-family: var(--font-editorial);
    font-style: italic;
    font-size: var(--type-18);
    letter-spacing: 0;
    color: var(--color-driftwood);
    font-weight: 400;
}

.hero__sub {
    font-family: var(--font-editorial);
    font-style: italic;
    font-size: var(--type-22);
    line-height: 1.45;
    color: var(--color-ink);
    max-width: 44ch;
    margin-top: var(--space-5);
    margin-bottom: var(--space-3);
}
.hero__meta {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--color-driftwood);
}

.hero__motif {
    aspect-ratio: 1 / 1;
    width: 100%;
    max-width: 520px;
    margin-left: auto;
    border: var(--rule-soft);
    background: rgba(217, 201, 163, 0.18);
    padding: var(--space-3);
    position: relative;
}
.hero__motif::before, .hero__motif::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    border: 1px solid var(--color-driftwood);
}
.hero__motif::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.hero__motif::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

/* ---------- Filter bar ---------- */
.filterbar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    border-top: var(--rule-soft);
    border-bottom: var(--rule-soft);
    flex-wrap: wrap;
}
.filterbar__label {
    font-family: var(--font-display);
    font-size: var(--type-13);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-driftwood);
}
.filterbar__tags {
    display: flex;
    gap: var(--space-1);
    flex: 1;
    flex-wrap: wrap;
}
.tag {
    font-family: var(--font-display);
    font-size: var(--type-13);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-ink);
    padding: 6px 12px;
    border: 1px solid transparent;
    border-radius: 0;
    transition: all var(--motion-fast);
    position: relative;
}
.tag:hover { color: var(--color-coral); }
.tag--active {
    border-color: var(--color-ink);
    background: var(--color-sand);
    color: var(--color-ink);
}
.filterbar__count {
    font-family: var(--font-editorial);
    font-style: italic;
    font-size: var(--type-16);
    color: var(--color-driftwood);
}

/* ---------- Masonry ---------- */
.masonry {
    padding: var(--space-6) var(--space-5);
    column-count: 4;
    column-gap: var(--space-3);
    max-width: 1480px;
    margin: 0 auto;
}
@media (max-width: 1180px) { .masonry { column-count: 3; } }
@media (max-width: 820px)  { .masonry { column-count: 2; } }
@media (max-width: 540px)  { .masonry { column-count: 1; } }

.card {
    break-inside: avoid;
    background: var(--color-bg);
    border: var(--rule-soft);
    padding: var(--space-3);
    margin: 0 0 var(--space-3) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    position: relative;
    transform: translateY(var(--stagger, 0));
    opacity: 0;
    transition: transform var(--motion-mid), box-shadow var(--motion-mid), border-color var(--motion-mid), background var(--motion-mid);
    will-change: transform, opacity;
}
.card.is-visible {
    opacity: 1;
}
.card::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 18px; height: 18px;
    border-top: 1px solid var(--color-driftwood);
    border-left: 1px solid var(--color-driftwood);
    transform: translate(-1px, -1px);
}
.card::after {
    content: "";
    position: absolute;
    bottom: 0; right: 0;
    width: 18px; height: 18px;
    border-bottom: 1px solid var(--color-driftwood);
    border-right: 1px solid var(--color-driftwood);
    transform: translate(1px, 1px);
}
.card:hover {
    border-color: var(--color-ink);
    box-shadow: 6px 6px 0 0 var(--color-sand);
    transform: translateY(calc(var(--stagger, 0) - 2px));
}

.card--accent {
    background: var(--color-sand);
    border-color: var(--color-ink);
}
.card--accent .card__quote { color: var(--color-ink); }
.card--quote {
    background: linear-gradient(180deg, rgba(159, 184, 176, 0.25) 0%, transparent 100%);
}

.card__head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-1);
    border-bottom: var(--rule-dashed);
    padding-bottom: var(--space-1);
}
.card__kicker {
    font-family: var(--font-display);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--color-coral);
}
.card__date {
    font-family: var(--font-display);
    font-size: var(--type-13);
    color: var(--color-driftwood);
    letter-spacing: 0.12em;
    font-variant-numeric: tabular-nums;
}

.card__motif {
    aspect-ratio: 4 / 3;
    background: rgba(237, 230, 214, 0.6);
    border: var(--rule-dashed);
    color: var(--color-ink);
    padding: var(--space-2);
    overflow: hidden;
    position: relative;
}
.card__motif--small { aspect-ratio: 16 / 9; padding: var(--space-1); }
.card__motif svg {
    width: 100%;
    height: 100%;
    color: var(--color-ink);
    transition: color var(--motion-slow), transform var(--motion-slow);
}
.card:hover .card__motif svg {
    color: var(--color-coral);
    transform: scale(1.04);
}

.card--tall .card__motif {
    aspect-ratio: 1 / 1;
}

.card__title {
    font-family: var(--font-display);
    font-size: var(--type-22);
    line-height: 1.12;
    letter-spacing: -0.01em;
    color: var(--color-ink);
    font-weight: 500;
    transition: transform var(--motion-fast);
}
.card:hover .card__title { transform: translateX(2px); }
.card__body {
    font-size: var(--type-16);
    line-height: 1.55;
    color: var(--color-ink);
}
.card__body--long { font-family: var(--font-editorial); font-size: var(--type-18); font-style: italic; line-height: 1.5; }
.card__quote {
    font-family: var(--font-editorial);
    font-style: italic;
    font-size: var(--type-22);
    line-height: 1.35;
    color: var(--color-ink);
    padding-left: var(--space-2);
    border-left: 2px solid var(--color-coral);
}
.card__quote--ko {
    font-family: var(--font-display);
    font-style: normal;
    letter-spacing: -0.01em;
    border-left-color: var(--color-seafoam);
}
.card__meta {
    font-family: var(--font-display);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--color-driftwood);
    border-top: var(--rule-dashed);
    padding-top: var(--space-1);
    margin-top: auto;
}

.card.is-hidden { display: none; }

/* ---------- Reading row (staggered plates) ---------- */
.reading-row {
    padding: var(--space-7) var(--space-5);
    border-top: var(--rule-soft);
}
.row-head {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: var(--space-3);
    align-items: center;
    margin-bottom: var(--space-5);
    max-width: 1480px;
    margin-left: auto;
    margin-right: auto;
}
.row-head__rule {
    height: 2px;
    background: var(--color-ink);
    width: 64px;
}
.row-head__title {
    font-family: var(--font-display);
    font-size: var(--type-36);
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--color-ink);
}
.row-head__meta {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--color-driftwood);
}

.reading-row__track {
    display: grid;
    grid-template-columns: repeat(6, minmax(180px, 1fr));
    gap: var(--space-3);
    max-width: 1480px;
    margin: 0 auto;
}
@media (max-width: 1180px) { .reading-row__track { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 540px)  { .reading-row__track { grid-template-columns: repeat(2, 1fr); } }

.plate {
    background: rgba(255, 255, 255, 0.35);
    border: var(--rule-dashed);
    padding: var(--space-2);
    color: var(--color-ink);
    transform: translateY(var(--row-stagger, 0));
    transition: transform var(--motion-mid), background var(--motion-mid), color var(--motion-mid);
    aspect-ratio: 4 / 5;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}
.plate:nth-child(2n)  { --row-stagger: 56px; }
.plate:nth-child(3n)  { --row-stagger: 28px; }
.plate:nth-child(4n)  { --row-stagger: 72px; }
.plate:nth-child(5n)  { --row-stagger: 12px; }
.plate:hover {
    background: var(--color-sand);
    transform: translateY(calc(var(--row-stagger, 0) - 6px));
}
.plate__motif {
    flex: 1;
    border-bottom: var(--rule-dashed);
    color: var(--color-ink);
}
.plate__motif svg {
    width: 100%;
    height: 100%;
    transition: color var(--motion-slow);
}
.plate:hover .plate__motif svg { color: var(--color-coral); }
.plate__caption {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-driftwood);
}

/* ---------- Notes ---------- */
.notes {
    padding: var(--space-7) var(--space-5);
    border-top: var(--rule-soft);
    background: linear-gradient(180deg, rgba(217, 201, 163, 0.18) 0%, transparent 60%);
}
.notes__list {
    max-width: 1480px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
}
@media (max-width: 980px) { .notes__list { grid-template-columns: 1fr; } }

.note {
    border-top: var(--rule);
    padding-top: var(--space-3);
    max-width: 65ch;
}
.note__kicker {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--color-coral);
    margin-bottom: var(--space-2);
}
.note__title {
    font-family: var(--font-display);
    font-size: var(--type-28);
    line-height: 1.15;
    letter-spacing: -0.015em;
    margin-bottom: var(--space-2);
    font-weight: 500;
}
.note__body {
    font-family: var(--font-editorial);
    font-style: italic;
    font-size: var(--type-18);
    line-height: 1.55;
    color: var(--color-ink);
    margin-bottom: var(--space-2);
}
.note__body em {
    color: var(--color-coral);
    font-style: italic;
    font-weight: 500;
}
.note__link {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-ink);
    padding-bottom: 2px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color var(--motion-fast), gap var(--motion-fast);
    position: relative;
}
.note__link::after {
    content: "";
    position: absolute;
    left: 0; right: 0;
    bottom: -6px;
    height: 1px;
    border-bottom: 1px dashed var(--color-driftwood);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--motion-mid);
}
.note__link:hover { color: var(--color-coral); gap: 12px; }
.note__link:hover::after { transform: scaleX(1); }
.note__arrow { transition: transform var(--motion-fast); }
.note__link:hover .note__arrow { transform: translateX(4px); }

/* ---------- Colophon ---------- */
.colophon {
    padding: var(--space-7) var(--space-5) var(--space-5);
    border-top: var(--rule-soft);
}
.colophon__cols {
    max-width: 1480px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
}
@media (max-width: 980px) { .colophon__cols { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .colophon__cols { grid-template-columns: 1fr; } }

.colophon__group {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.28em;
    color: var(--color-coral);
    border-bottom: var(--rule-soft);
    padding-bottom: var(--space-1);
    margin-bottom: var(--space-2);
}
.colophon__list li {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    line-height: 2;
    color: var(--color-ink);
    display: flex;
    align-items: center;
    gap: 10px;
}
.colophon__list a:hover { color: var(--color-coral); }
.colophon__list--swatch .sw {
    width: 14px; height: 14px;
    background: var(--sw);
    border: 1px solid var(--color-driftwood);
    display: inline-block;
}
.colophon__signoff {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-3);
    border-top: var(--rule-dashed);
    font-family: var(--font-editorial);
    font-style: italic;
    color: var(--color-driftwood);
    font-size: var(--type-18);
}

/* ---------- Footer ---------- */
.site-foot {
    padding: var(--space-3) var(--space-5);
    border-top: var(--rule);
}
.site-foot__rule {
    height: 4px;
    background:
        linear-gradient(90deg, var(--color-coral) 0 8%, transparent 8% 100%),
        repeating-linear-gradient(90deg, var(--color-driftwood) 0 6px, transparent 6px 12px);
    margin-bottom: var(--space-2);
}
.site-foot__line {
    font-family: var(--font-display);
    font-size: var(--type-13);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-driftwood);
    text-align: center;
}

/* ---------- Reveal animation states ---------- */
.card[data-stagger], .plate[data-stagger] {
    --stagger-y: 12px;
}
.card.is-visible {
    transform: translateY(var(--stagger, 0));
    opacity: 1;
}

/* ---------- Generative seed-driven offsets (set via JS) ---------- */
.card[style*="--gen-x"] { transform: translate(var(--gen-x, 0), var(--gen-y, 0)) rotate(var(--gen-rot, 0)); }