/* ============================================================
   bunnygirl.quest — wet-stone blobitecture, navy-metallic
   Inverted blobs as river-tumbled bronze pebbles.
   ============================================================ */

:root {
    --c-riverbed:    #0b1726; /* deepest bg */
    --c-plinth:      #152339; /* card base */
    --c-wetstone:    #1f3552; /* card mid */
    --c-patina:      #5a6878; /* rules / secondary text */
    --c-bronze:      #8b7355; /* aged accent */
    --c-brass:       #c4a570; /* polished accent */
    --c-cream:       #e8e4dc; /* primary text on dark */
    --c-specular:    #3a4a5e; /* sheen overlay */
    --c-oxide-red:   #7a3a2e; /* error flash */
    --c-shadow-deep: #050a13; /* abyssal shadow */

    --font-display: "Roboto Slab", "Noto Serif KR", Georgia, serif;
    --font-body:    "Zilla Slab", "Noto Serif KR", Georgia, serif;
    --font-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

    --ease-stone: cubic-bezier(0.22, 0.61, 0.36, 1);
    --ease-mat:   cubic-bezier(0.4, 0, 0.2, 1);

    --t-fast:   320ms;
    --t-slow:   700ms;
}

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

html { scroll-behavior: smooth; }

.defs-only { position: absolute; width: 0; height: 0; overflow: hidden; }

body {
    background: var(--c-riverbed);
    color: var(--c-cream);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.65;
    min-height: 100vh;
    overflow-x: hidden;
    /* perspective for true z-stack parallax */
    perspective: 1400px;
    perspective-origin: 50% 30%;
    /* river-surface ambient slow drift */
    background:
        radial-gradient(ellipse 90% 60% at var(--river-x, 50%) var(--river-y, 18%),
                        rgba(31, 53, 82, 0.55) 0%,
                        rgba(11, 23, 38, 0.0) 60%),
        var(--c-riverbed);
    animation: river-drift 90s linear infinite;
}

@keyframes river-drift {
    0%   { background-position: 0% 0%, 0 0; --river-x: 30%; --river-y: 14%; }
    25%  { --river-x: 60%; --river-y: 22%; }
    50%  { --river-x: 70%; --river-y: 12%; }
    75%  { --river-x: 40%; --river-y: 28%; }
    100% { --river-x: 30%; --river-y: 14%; }
}

/* ============================================================
   MASTHEAD
   ============================================================ */

.masthead {
    position: sticky;
    top: 0;
    z-index: 50;
    min-height: 14vh;
    padding: 1.6rem 5vw 1.2rem;
    background:
        linear-gradient(180deg, rgba(11, 23, 38, 0.96) 0%, rgba(11, 23, 38, 0.82) 80%, rgba(11, 23, 38, 0.0) 100%);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: padding var(--t-slow) var(--ease-stone);
}

.masthead--released {
    position: relative;
    backdrop-filter: none;
}

.masthead__row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: end;
    gap: 2rem;
}

.masthead__title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.4rem, 5.5vw, 4.5rem);
    letter-spacing: 0.18em;
    font-variant: small-caps;
    color: var(--c-cream);
    line-height: 1.0;
    text-shadow: 0 2px 0 rgba(5, 10, 19, 0.6);
}

.masthead__subtitle-kr {
    margin-top: 0.4rem;
    font-family: "Noto Serif KR", var(--font-display);
    font-weight: 500;
    font-size: 0.98rem;
    letter-spacing: 0.12em;
    color: var(--c-patina);
}

.masthead__strap {
    margin-top: 0.7rem;
    font-family: var(--font-body);
    font-weight: 400;
    font-style: italic;
    font-size: 0.92rem;
    color: var(--c-patina);
    max-width: 52ch;
}

.masthead__stamp {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.45rem;
}

.stamp {
    display: inline-block;
    padding: 0.28rem 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    color: var(--c-bronze);
    background: rgba(232, 228, 220, 0.04);
    border: 1px solid rgba(139, 115, 85, 0.4);
    border-radius: 4px 8px 5px 7px;
    text-transform: uppercase;
}

.stamp--small {
    font-size: 0.6rem;
    color: var(--c-patina);
    border-color: rgba(90, 104, 120, 0.4);
}

.masthead__signature {
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 0.4rem 0.5rem;
    color: var(--c-patina);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    opacity: 0.55;
    transition: opacity var(--t-fast) var(--ease-stone);
}
.masthead__signature:hover,
.masthead__signature.is-revealed {
    opacity: 1;
}
.bunny-glyph {
    width: 36px;
    height: 36px;
    opacity: 0.0;
    transform: translateY(4px);
    transition: opacity var(--t-fast) var(--ease-stone), transform var(--t-fast) var(--ease-stone);
}
.masthead__signature:hover .bunny-glyph,
.masthead__signature.is-revealed .bunny-glyph {
    opacity: 1;
    transform: translateY(0);
}

.masthead__rule {
    margin-top: 0.9rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-patina) 18%, var(--c-patina) 82%, transparent);
    opacity: 0.6;
}

/* ============================================================
   ARCHIVE SEARCH
   ============================================================ */

.archive-search {
    padding: 2.4rem 5vw 0.4rem;
}

.archive-search__label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.22em;
    color: var(--c-patina);
    margin-bottom: 0.5rem;
}

.archive-search__row {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

.archive-search__input {
    flex: 1 1 360px;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--c-patina);
    color: var(--c-cream);
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 1.4rem;
    letter-spacing: 0.04em;
    padding: 0.4rem 0.2rem 0.6rem;
    outline: none;
    transition: border-color var(--t-fast) var(--ease-stone);
}
.archive-search__input::placeholder {
    color: rgba(90, 104, 120, 0.7);
    font-style: italic;
    font-size: 0.95rem;
}
.archive-search__input:hover {
    border-bottom-color: var(--c-bronze);
}
.archive-search__input.is-shaking {
    animation: shake-error 480ms var(--ease-mat);
    border-bottom-color: var(--c-oxide-red);
}

.archive-search__annotation {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    color: var(--c-bronze);
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity var(--t-fast) var(--ease-stone), transform var(--t-fast) var(--ease-stone);
}
.archive-search__annotation.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.archive-search__hint {
    margin-top: 0.6rem;
    font-family: var(--font-body);
    font-size: 0.78rem;
    color: var(--c-patina);
    font-style: italic;
}
.archive-search__hint em {
    color: var(--c-bronze);
    font-style: italic;
}

@keyframes shake-error {
    0%, 100% { transform: translateX(0); }
    15% { transform: translateX(-6px) rotate(-0.4deg); }
    30% { transform: translateX(5px) rotate(0.3deg); }
    45% { transform: translateX(-4px) rotate(-0.2deg); }
    60% { transform: translateX(3px) rotate(0.2deg); }
    75% { transform: translateX(-2px); }
}

/* ============================================================
   ARTIFACT GRID
   ============================================================ */

.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.4rem;
    padding: 3rem 5vw 6rem;
    background: radial-gradient(ellipse at top, rgba(21, 35, 57, 0.6) 0%, rgba(11, 23, 38, 0.0) 70%);
    align-items: stretch;
    grid-auto-flow: dense;
    grid-auto-rows: minmax(220px, auto);
    transition: gap var(--t-slow) var(--ease-stone);
}

/* ============================================================
   ARTIFACT CARD — three-plane stack:
   plinth shadow (::before-of-wrapper) + stone (.artifact)
   + specular (::before) + patina (::after)
   ============================================================ */

.artifact {
    --tilt: 0deg;
    --br: 32% 68% 70% 30% / 38% 52% 48% 62%;

    position: relative;
    grid-column: span 3;
    grid-row: span 1;
    min-height: 220px;

    padding: 1.4rem 1.4rem 1.2rem;
    background: radial-gradient(ellipse at 30% 25%,
                                var(--c-wetstone) 0%,
                                var(--c-plinth) 60%,
                                var(--c-riverbed) 100%);
    border-radius: var(--br);
    color: var(--c-cream);
    transform: rotate(var(--tilt)) translateZ(0);
    transform-style: preserve-3d;
    cursor: pointer;
    isolation: isolate;
    box-shadow:
        0 18px 40px -12px var(--c-shadow-deep),
        inset 0 2px 0 0 rgba(232, 228, 220, 0.04),
        inset 0 -8px 16px -8px var(--c-shadow-deep);
    transition:
        transform var(--t-fast) var(--ease-stone),
        box-shadow var(--t-fast) var(--ease-stone),
        grid-column var(--t-slow) var(--ease-stone),
        grid-row var(--t-slow) var(--ease-stone),
        padding var(--t-slow) var(--ease-stone),
        border-radius var(--t-slow) var(--ease-stone);
    will-change: transform;
}

/* SPECULAR HIGHLIGHT (z=+1) */
.artifact::before {
    content: '';
    position: absolute;
    top: 8%;
    left: 18%;
    width: 28%;
    height: 22%;
    border-radius: 50% 50% 60% 40% / 60% 40% 50% 50%;
    background: rgba(232, 228, 220, 0.14);
    filter: blur(8px);
    mix-blend-mode: overlay;
    pointer-events: none;
    transform: translateZ(8px);
    transition: opacity var(--t-fast) var(--ease-stone);
    z-index: 2;
}

/* PATINA NOISE OVERLAY */
.artifact::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='4'/><feColorMatrix values='0 0 0 0 0.05  0 0 0 0 0.08  0 0 0 0 0.13  0 0 0 0.6 0'/></filter><rect width='220' height='220' filter='url(%23n)' opacity='0.6'/></svg>");
    background-size: 220px 220px;
    opacity: 0.06;
    mix-blend-mode: multiply;
    pointer-events: none;
    z-index: 1;
}

.artifact > * {
    position: relative;
    z-index: 3;
}

/* PLINTH SHADOW (z=-2) — separate element since ::before/::after used */
.artifact-wrapper {
    position: relative;
}

/* HOVER lift + brass outline */
.artifact:hover {
    transform: rotate(var(--tilt)) translateY(-6px) translateZ(2px);
    box-shadow:
        0 26px 50px -14px var(--c-shadow-deep),
        0 0 0 2px rgba(196, 165, 112, 0.0),
        inset 0 2px 0 0 rgba(232, 228, 220, 0.07),
        inset 0 -8px 16px -8px var(--c-shadow-deep);
}
.artifact:hover .artifact__brass-ring {
    opacity: 1;
    transform: scale(1.04);
}
.artifact:hover .artifact__catalog {
    color: var(--c-brass);
    transform: scale(1.04);
}

/* BRASS RING (separate element, irregular outline) */
.artifact__brass-ring {
    position: absolute;
    inset: -6px;
    border: 2px solid var(--c-brass);
    border-radius: var(--br);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t-fast) var(--ease-stone), transform var(--t-fast) var(--ease-stone);
    z-index: 0;
}

/* ARTIFACT TYPOGRAPHY */
.artifact__silhouette-wrap {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    margin-bottom: 0.9rem;
    overflow: visible;
}

.artifact__silhouette {
    width: 100%;
    height: 100%;
    display: block;
}

.artifact__name {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1.05rem;
    line-height: 1.25;
    letter-spacing: 0.04em;
    font-variant: small-caps;
    color: var(--c-cream);
    margin-bottom: 0.45rem;
}

.artifact__annotation {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.86rem;
    line-height: 1.55;
    color: rgba(232, 228, 220, 0.78);
    margin-bottom: 0.8rem;
    /* limit to 3 lines in collapsed state */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.artifact__footer {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    color: var(--c-patina);
    text-transform: uppercase;
    border-top: 1px dashed rgba(90, 104, 120, 0.35);
    padding-top: 0.5rem;
}

.artifact__catalog {
    color: var(--c-bronze);
    font-weight: 500;
    transition: color var(--t-fast) var(--ease-stone), transform var(--t-fast) var(--ease-stone);
    transform-origin: left center;
}

.artifact__coord { white-space: nowrap; }

/* CARD VARIANTS — hand-tuned grid spans */
.artifact--small      { grid-column: span 2; }
.artifact--default    { grid-column: span 3; }
.artifact--wide       { grid-column: span 4; }
.artifact--tall       { grid-row: span 2; }
.artifact--vessel     { grid-column: span 4; grid-row: span 2; }
.artifact--centerpiece{ grid-column: span 5; grid-row: span 2; }

/* LOCKED ARTIFACTS */
.artifact--locked .artifact__lock {
    display: inline-block;
    margin-left: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--c-oxide-red);
    letter-spacing: 0.16em;
    background: rgba(122, 58, 46, 0.12);
    border: 1px solid rgba(122, 58, 46, 0.45);
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
}
.artifact--locked .artifact__silhouette { opacity: 0.55; filter: grayscale(0.4); }
.artifact--locked.is-shaking {
    animation: shake-error 480ms var(--ease-mat);
}

/* EXPANDED CARD (click) */
.artifact.is-expanded {
    grid-column: span 8 !important;
    grid-row: span 3 !important;
    z-index: 20;
    cursor: zoom-out;
    transform: rotate(0deg) translateY(0) translateZ(0);
    box-shadow:
        0 36px 70px -16px var(--c-shadow-deep),
        inset 0 2px 0 0 rgba(232, 228, 220, 0.06),
        inset 0 -10px 20px -10px var(--c-shadow-deep);
    padding: 2.2rem 2.4rem;
    border-radius: 28% 72% 64% 36% / 36% 56% 44% 64%;
}

.artifact.is-expanded .artifact__annotation {
    -webkit-line-clamp: unset;
    display: block;
    font-size: 0.95rem;
}

.artifact.is-expanded .artifact__detail {
    display: grid;
}

.artifact.is-dimmed {
    filter: brightness(0.65) saturate(0.85);
    transform: rotate(var(--tilt)) scale(0.96);
}

/* DETAIL PANEL inside expanded card */
.artifact__detail {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1.4rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(90, 104, 120, 0.4);
}

.artifact__detail-left,
.artifact__detail-right {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.artifact__cross-section {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: rgba(11, 23, 38, 0.6);
    border-radius: 18px 26px 18px 22px / 22px 18px 22px 18px;
    padding: 0.6rem;
}
.artifact__cross-section svg { width: 100%; height: 100%; }

.artifact__field-note {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.92rem;
    line-height: 1.7;
    color: rgba(232, 228, 220, 0.86);
    font-style: italic;
}
.artifact__field-note::before {
    content: 'FIELD NOTE — ';
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    color: var(--c-patina);
    font-style: normal;
}

/* WEIGHT BAR */
.artifact__weight-row {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--c-patina);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.artifact__weight-bar {
    flex: 1;
    height: 6px;
    background: rgba(90, 104, 120, 0.18);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}
.artifact__weight-fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--w, 50%);
    background: linear-gradient(90deg, var(--c-bronze), var(--c-brass));
    border-radius: 3px;
    transition: width 900ms var(--ease-stone);
}
.artifact__weight-value { color: var(--c-cream); font-weight: 500; }

/* FERROMAGNETIC CHIP */
.artifact__chip-row {
    display: flex;
    gap: 0.6rem;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--c-patina);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.artifact__chip {
    padding: 0.22rem 0.6rem;
    border-radius: 14px;
    font-weight: 500;
    letter-spacing: 0.16em;
}
.artifact__chip--yes {
    background: rgba(139, 115, 85, 0.2);
    color: var(--c-brass);
    border: 1px solid var(--c-bronze);
}
.artifact__chip--no {
    background: rgba(90, 104, 120, 0.14);
    color: var(--c-patina);
    border: 1px solid var(--c-patina);
}

/* COORDINATE BLOCK */
.artifact__coord-block {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--c-bronze);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    line-height: 1.6;
    border-left: 2px solid var(--c-bronze);
    padding-left: 0.7rem;
}

/* MAP DETAIL */
.artifact__map {
    width: 100%;
    aspect-ratio: 5 / 3;
    background: rgba(11, 23, 38, 0.4);
    border: 1px solid rgba(90, 104, 120, 0.3);
    border-radius: 8px 14px 8px 12px / 10px 8px 12px 8px;
    padding: 0.4rem;
}
.artifact__map svg { width: 100%; height: 100%; }

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
    margin-top: 2rem;
    border-top: 1px solid rgba(90, 104, 120, 0.3);
    background: linear-gradient(180deg, rgba(11, 23, 38, 0.6) 0%, var(--c-shadow-deep) 100%);
    padding: 2rem 5vw 3rem;
}

.footer__bar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.6rem;
    align-items: baseline;
    border-bottom: 1px solid var(--c-bronze);
    padding-bottom: 1rem;
    margin-bottom: 1.2rem;
    background: linear-gradient(90deg, transparent, rgba(139, 115, 85, 0.08) 50%, transparent);
}

.footer__attrib {
    font-family: var(--font-body);
    font-size: 0.86rem;
    color: var(--c-patina);
    font-style: italic;
}
.footer__signature {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--c-brass);
    letter-spacing: 0.04em;
}
.footer__date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    color: var(--c-patina);
    text-transform: uppercase;
    text-align: right;
}

.footer__stamp-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: center;
}

/* ============================================================
   PARALLAX (scroll-driven via CSS variable, set by JS)
   ============================================================ */

body.is-scrolled .artifact {
    /* differential parallax — JS sets --scroll-y; pure CSS fallback below */
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 980px) {
    .grid { grid-template-columns: repeat(8, 1fr); gap: 1.1rem; }
    .artifact--small      { grid-column: span 4; }
    .artifact--default    { grid-column: span 4; }
    .artifact--wide       { grid-column: span 5; }
    .artifact--vessel     { grid-column: span 8; grid-row: span 2; }
    .artifact--centerpiece{ grid-column: span 8; grid-row: span 2; }
    .artifact.is-expanded { grid-column: span 8 !important; }

    .masthead__row { grid-template-columns: 1fr auto; }
    .masthead__signature { display: none; }
    .footer__bar { grid-template-columns: 1fr; gap: 0.5rem; }
    .footer__date { text-align: left; }
}

@media (max-width: 620px) {
    .grid { grid-template-columns: repeat(4, 1fr); gap: 1rem; padding: 2rem 4vw 4rem; }
    .artifact--small,
    .artifact--default,
    .artifact--wide,
    .artifact--vessel,
    .artifact--centerpiece { grid-column: span 4; }
    .artifact { min-height: 180px; }
    .artifact.is-expanded { grid-column: span 4 !important; grid-row: span 4 !important; }
    .artifact__detail { grid-template-columns: 1fr; }
    .masthead__title { letter-spacing: 0.12em; }
    .masthead__stamp { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    body { animation: none; }
}