/* ==========================================================================
   gabs.cx — value, witnessed
   Skeuomorphic financial materiality, hexagonal valuation chambers,
   five-chamber vertical descent.
   ========================================================================== */

/* ---- Tokens ---- */
:root {
    --c-ground: #f4f1eb;       /* Unbleached Bond */
    --c-void: #0d0d0f;         /* Carbon Proof */
    --c-copper: #b8632a;       /* Intaglio Copper */
    --c-teal: #2a7b6f;         /* Verification Teal */
    --c-graphite: #6b6b72;     /* Ledger Graphite */
    --c-gilt: #d4a842;         /* Gilt Edge */
    --c-vault: #3a3a42;        /* Vault Steel */

    --hex-clip: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    --hex-clip-closed: polygon(50% 50%, 50% 50%, 50% 50%, 50% 50%, 50% 50%, 50% 50%);

    --ease-paper: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);

    --f-display: "Darker Grotesque", "Inter", sans-serif;
    --f-body: "Cormorant Infant", "Cormorant Garamond", serif;
    --f-mono: "Share Tech Mono", ui-monospace, monospace;
    --f-cjk: "Noto Sans JP", serif;
}

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

html, body {
    background: var(--c-ground);
    color: var(--c-vault);
    font-family: var(--f-body);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    line-height: 1.5;
}

/* ---- Progress rail ---- */
.progress-rail {
    position: fixed;
    top: 0;
    right: 12px;
    height: 100vh;
    width: 22px;
    z-index: 50;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 6vh 0;
    pointer-events: none;
    mix-blend-mode: difference;
}

.rail-line {
    position: absolute;
    top: 6vh;
    bottom: 6vh;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(184, 99, 42, 0.18);
}

.rail-marker {
    position: relative;
    width: 12px;
    height: 12px;
    border: none;
    background: transparent;
    cursor: pointer;
    pointer-events: auto;
    padding: 0;
    z-index: 2;
}

.rail-marker span {
    display: block;
    width: 7px;
    height: 7px;
    margin: auto;
    border-radius: 50%;
    background: var(--c-graphite);
    opacity: 0.45;
    transition: transform 600ms var(--ease-soft), background 400ms var(--ease-soft), opacity 400ms var(--ease-soft);
}

.rail-marker.is-active span {
    background: var(--c-copper);
    opacity: 1;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.4); }
}

/* ---- Signature ---- */
.signature {
    position: fixed;
    right: 36px;
    bottom: 18px;
    font-family: var(--f-display);
    font-weight: 300;
    font-size: 10px;
    letter-spacing: 0.3em;
    text-transform: lowercase;
    color: var(--c-vault);
    opacity: 0.3;
    z-index: 60;
    mix-blend-mode: difference;
    pointer-events: none;
}

/* ---- Thread lines (security threads) ---- */
.thread-lines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 4;
    overflow: hidden;
}

.thread-lines span {
    position: absolute;
    left: -10vw;
    width: 120vw;
    top: calc(50% + var(--y));
    height: 0.5px;
    background: rgba(42, 123, 111, 0.18);
    transform: translate3d(var(--shift, 0), 0, 0);
    transition: transform 200ms linear;
}

/* ---- Chamber base ---- */
main#descent {
    position: relative;
    z-index: 1;
}

.chamber {
    position: relative;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 1200ms var(--ease-paper);
    isolation: isolate;
}

.chamber[data-tone="light"] { background: var(--c-ground); color: var(--c-vault); }
.chamber[data-tone="dark"] { background: var(--c-void); color: var(--c-ground); }

/* ---- Watermark kanji ---- */
.watermark {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--f-cjk);
    font-weight: 100;
    font-size: clamp(8rem, 25vw, 30rem);
    color: var(--c-graphite);
    opacity: 0.04;
    pointer-events: none;
    user-select: none;
    z-index: 1;
    transform: translate3d(0, var(--wm-shift, 0), 0);
    transition: opacity 800ms var(--ease-paper);
    will-change: transform, opacity;
}

.chamber[data-tone="dark"] .watermark { color: var(--c-ground); opacity: 0.05; }
.watermark.is-active { opacity: 0.12; }
.chamber[data-tone="dark"] .watermark.is-active { opacity: 0.13; }

.watermark-sparse { opacity: 0.05; }
.watermark-gold { color: var(--c-gilt); opacity: 0.06; }
.chamber-perception .watermark.is-active { opacity: 0.16; }
.watermark-final { opacity: 0.08; }
.watermark-final.is-active { opacity: 0.25 !important; color: var(--c-gilt); }

/* ---- Intaglio backgrounds ---- */
.intaglio {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    opacity: 0;
    transition: opacity 1500ms var(--ease-paper);
}

.chamber.is-visible .intaglio { opacity: 1; }

/* ---- Chamber frame ---- */
.chamber-frame {
    position: relative;
    z-index: 5;
    width: min(1300px, 92vw);
    height: 100%;
    display: grid;
    grid-template-rows: auto 1fr auto;
    padding: 8vh 0 6vh;
    gap: 3vh;
}

.chamber-frame--sparse { gap: 5vh; }

.chamber-head {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 1.4em;
    row-gap: 0.4em;
    align-items: end;
}

.chamber-head--center { text-align: center; grid-template-columns: 1fr; justify-items: center; }

.chamber-index {
    font-family: var(--f-mono);
    font-size: 0.85rem;
    color: var(--c-copper);
    opacity: 0.75;
    grid-row: 1 / 3;
    align-self: center;
    letter-spacing: 0.2em;
    text-transform: lowercase;
}

.chamber-head--center .chamber-index {
    grid-row: auto;
    margin-bottom: 0.5em;
}

.chamber-title {
    font-family: var(--f-display);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-size: clamp(3rem, 8vw, 7rem);
    line-height: 0.95;
    color: inherit;
    grid-column: 2;
}
.chamber-head--center .chamber-title { grid-column: auto; }

.chamber-title--gold { color: var(--c-gilt); }

.chamber-blurb {
    font-family: var(--f-body);
    font-style: italic;
    font-weight: 300;
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    line-height: 1.85;
    letter-spacing: 0.02em;
    max-width: 48ch;
    color: var(--c-graphite);
    grid-column: 2;
}

.chamber[data-tone="dark"] .chamber-blurb { color: rgba(244, 241, 235, 0.7); }
.chamber-head--center .chamber-blurb { grid-column: auto; }

/* ---- Hex grid ---- */
.hex-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-auto-rows: 1fr;
    gap: 2px 2px;
    align-self: center;
    width: 100%;
    max-height: 56vh;
    padding: 0 4%;
}

.hex-grid--sparse {
    grid-template-rows: repeat(3, 1fr);
    gap: 8px;
    max-height: 48vh;
}

.hex {
    position: relative;
    aspect-ratio: 1 / 0.866;
    clip-path: var(--hex-clip);
    background: rgba(107, 107, 114, 0.06);
    transition: transform 400ms var(--ease-paper), filter 300ms var(--ease-soft), background 400ms var(--ease-soft);
    transform-origin: center;
    overflow: hidden;
    will-change: transform, clip-path;
    --hex-border: rgba(107, 107, 114, 0.32);
}

.chamber[data-tone="dark"] .hex { background: rgba(244, 241, 235, 0.04); --hex-border: rgba(244, 241, 235, 0.22); }
.chamber-perception .hex { --hex-border: rgba(212, 168, 66, 0.3); }
.chamber-exchange .hex { --hex-border: rgba(42, 123, 111, 0.32); }

/* hex border via inset clipped container */
.hex::before {
    content: "";
    position: absolute;
    inset: 0;
    clip-path: var(--hex-clip);
    background:
        linear-gradient(var(--hex-border), var(--hex-border)) padding-box;
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    padding: 1px;
    pointer-events: none;
    transition: background 400ms var(--ease-soft);
}

.hex-inner {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 14% 12%;
    opacity: 0;
    transition: opacity 600ms var(--ease-soft) 200ms;
}

.hex.is-open .hex-inner { opacity: 1; }

.hex-spacer { background: transparent; --hex-border: transparent; pointer-events: none; }
.hex-spacer::before { display: none; }

.hex.is-closed { clip-path: var(--hex-clip-closed); }
.hex.is-open { clip-path: var(--hex-clip); }

.hex:hover {
    transform: scale(1.03);
    --hex-border: var(--c-copper);
    z-index: 6;
}

.hex.is-near {
    filter: brightness(1.05);
}

/* hex content variants */
.hex-mono {
    font-family: var(--f-mono);
    font-size: clamp(0.78rem, 1.25vw, 1.05rem);
    color: var(--c-vault);
    letter-spacing: 0.02em;
    line-height: 1.2;
}
.chamber[data-tone="dark"] .hex-mono { color: var(--c-ground); }
.chamber-perception .hex-mono { color: var(--c-gilt); }
.chamber-exchange .hex-mono { color: var(--c-teal); }

.hex-cap {
    display: block;
    margin-top: 0.5em;
    font-family: var(--f-body);
    font-weight: 300;
    font-style: italic;
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    color: var(--c-graphite);
    line-height: 1.3;
}
.chamber[data-tone="dark"] .hex-cap { color: rgba(244, 241, 235, 0.55); }

.hex-line {
    font-family: var(--f-body);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(0.85rem, 1.2vw, 1.05rem);
    line-height: 1.5;
    color: inherit;
    letter-spacing: 0.02em;
}

.hex-kanji-char {
    font-family: var(--f-cjk);
    font-weight: 900;
    font-size: clamp(2rem, 3.5vw, 3.2rem);
    color: var(--c-copper);
    line-height: 1;
}
.chamber[data-tone="dark"] .hex-kanji-char { color: var(--c-copper); }
.chamber-perception .hex-kanji-char { color: var(--c-gilt); }
.chamber-exchange .hex-kanji-char { color: var(--c-teal); }

.hex-glyph svg {
    width: 60%;
    height: 60%;
}

.hex-large .hex-mono { font-size: clamp(1rem, 1.8vw, 1.5rem); color: var(--c-copper); }

.hex-mini { aspect-ratio: 1 / 0.866; }

/* ---- Chamber footer ---- */
.chamber-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--f-mono);
    font-size: 0.75rem;
    color: var(--c-graphite);
    letter-spacing: 0.18em;
    text-transform: lowercase;
    padding: 0 4%;
    opacity: 0.65;
}

.chamber[data-tone="dark"] .chamber-foot { color: rgba(244, 241, 235, 0.5); }

.foot-cap {
    font-family: var(--f-body);
    font-style: italic;
    font-weight: 300;
    letter-spacing: 0.05em;
    text-transform: lowercase;
}

/* ============ ENTRANCE ============ */
.entrance-stage {
    position: relative;
    z-index: 5;
    width: min(900px, 88vw);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5em;
}

.entrance-kanji {
    font-family: var(--f-cjk);
    font-weight: 100;
    font-size: clamp(6rem, 15vw, 20rem);
    color: var(--c-vault);
    opacity: 0;
    line-height: 0.9;
    transform: translateY(30px);
    transition: opacity 1800ms var(--ease-paper), transform 1800ms var(--ease-paper);
}

.entrance-kanji.is-shown { opacity: 0.06; transform: translateY(0); }

.entrance-rule {
    width: min(640px, 80vw);
    height: 4px;
    overflow: visible;
}

#entranceLine {
    transition: x1 1200ms var(--ease-paper), x2 1200ms var(--ease-paper);
}

.entrance-word {
    font-family: var(--f-display);
    font-weight: 900;
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--c-vault);
    display: flex;
    gap: 0.05em;
    margin-left: 0.4em; /* compensate for trailing letter-spacing */
}

.entrance-word span {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 600ms var(--ease-soft), transform 600ms var(--ease-soft);
}

.entrance-word.is-shown span { opacity: 1; transform: translateY(0); }
.entrance-word.is-shown span:nth-child(1) { transition-delay: 0ms; }
.entrance-word.is-shown span:nth-child(2) { transition-delay: 90ms; }
.entrance-word.is-shown span:nth-child(3) { transition-delay: 180ms; }
.entrance-word.is-shown span:nth-child(4) { transition-delay: 270ms; }
.entrance-word.is-shown span:nth-child(5) { transition-delay: 360ms; }

.entrance-sub {
    font-family: var(--f-body);
    font-style: italic;
    font-weight: 300;
    font-size: clamp(0.9rem, 1.4vw, 1.05rem);
    color: var(--c-graphite);
    letter-spacing: 0.08em;
    opacity: 0;
    transition: opacity 1200ms var(--ease-soft) 1400ms;
}
.entrance-sub.is-shown { opacity: 0.8; }

.scroll-cue {
    position: absolute;
    bottom: -20vh;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8em;
    opacity: 0;
    transition: opacity 1000ms var(--ease-soft) 2000ms;
}

.entrance-stage.is-ready .scroll-cue { opacity: 0.8; }

.scroll-cue-label {
    font-family: var(--f-mono);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: lowercase;
    color: var(--c-copper);
}

.scroll-cue-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(var(--c-copper), transparent);
    animation: cueDescend 2.4s ease-in-out infinite;
    transform-origin: top;
}

@keyframes cueDescend {
    0% { transform: scaleY(0); opacity: 0; }
    35% { transform: scaleY(1); opacity: 1; }
    100% { transform: scaleY(1) translateY(48px); opacity: 0; }
}

/* ============ MANDALA (chamber 5) ============ */
.mandala {
    position: relative;
    align-self: center;
    width: min(640px, 80vh);
    aspect-ratio: 1 / 1;
    margin: auto;
}

.mandala-ring {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
}

.mandala-ring--outer .hex {
    position: absolute;
    width: 16%;
    aspect-ratio: 1 / 0.866;
    transform-origin: center;
}

.mandala-ring--outer .hex:nth-child(1)  { transform: rotate(0deg)   translate(0, -42%) rotate(0deg); }
.mandala-ring--outer .hex:nth-child(2)  { transform: rotate(30deg)  translate(0, -42%) rotate(-30deg); }
.mandala-ring--outer .hex:nth-child(3)  { transform: rotate(60deg)  translate(0, -42%) rotate(-60deg); }
.mandala-ring--outer .hex:nth-child(4)  { transform: rotate(90deg)  translate(0, -42%) rotate(-90deg); }
.mandala-ring--outer .hex:nth-child(5)  { transform: rotate(120deg) translate(0, -42%) rotate(-120deg); }
.mandala-ring--outer .hex:nth-child(6)  { transform: rotate(150deg) translate(0, -42%) rotate(-150deg); }
.mandala-ring--outer .hex:nth-child(7)  { transform: rotate(180deg) translate(0, -42%) rotate(-180deg); }
.mandala-ring--outer .hex:nth-child(8)  { transform: rotate(210deg) translate(0, -42%) rotate(-210deg); }
.mandala-ring--outer .hex:nth-child(9)  { transform: rotate(240deg) translate(0, -42%) rotate(-240deg); }
.mandala-ring--outer .hex:nth-child(10) { transform: rotate(270deg) translate(0, -42%) rotate(-270deg); }
.mandala-ring--outer .hex:nth-child(11) { transform: rotate(300deg) translate(0, -42%) rotate(-300deg); }
.mandala-ring--outer .hex:nth-child(12) { transform: rotate(330deg) translate(0, -42%) rotate(-330deg); }

.hex-center {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 36%;
    aspect-ratio: 1 / 0.866;
    transform: translate(-50%, -50%);
    background: rgba(244, 241, 235, 0.6);
    backdrop-filter: blur(2px);
    --hex-border: var(--c-gilt);
    z-index: 3;
}

.hex-center .hex-inner {
    opacity: 1;
    gap: 0.4em;
    padding: 18% 12%;
}

.center-label {
    font-family: var(--f-body);
    font-style: italic;
    font-weight: 300;
    font-size: clamp(0.75rem, 1vw, 0.9rem);
    color: var(--c-graphite);
    letter-spacing: 0.1em;
    text-transform: lowercase;
}

.center-counter {
    font-family: var(--f-mono);
    font-size: clamp(1.6rem, 3.5vw, 2.8rem);
    color: var(--c-gilt);
    letter-spacing: 0.04em;
    line-height: 1;
    text-shadow: 0 0 24px rgba(212, 168, 66, 0.35);
}

.center-unit {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    color: var(--c-graphite);
    letter-spacing: 0.18em;
    text-transform: lowercase;
}

.gold-bleed {
    opacity: 0;
    transition: opacity 2000ms var(--ease-paper);
}
.chamber-exchange.is-visible .gold-bleed { opacity: 1; }

.exchange-coda {
    text-align: center;
    font-family: var(--f-body);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.4rem, 2.8vw, 2.2rem);
    color: var(--c-vault);
    letter-spacing: 0.04em;
    margin-top: 1.5vh;
    opacity: 0;
    transition: opacity 1500ms var(--ease-paper);
}
.exchange-coda.is-shown { opacity: 0.85; }

/* ---- Tilt elements ---- */
.hex-tilt {
    transform-style: preserve-3d;
    transition: transform 200ms var(--ease-soft);
}

/* ---- Responsive ---- */
@media (max-width: 1199px) {
    .hex-grid { grid-template-columns: repeat(4, 1fr); max-height: 60vh; }
    .hex-grid--sparse { grid-template-columns: repeat(3, 1fr); }
    .mandala { width: min(520px, 75vh); }
}

@media (max-width: 767px) {
    .progress-rail { right: 6px; padding: 4vh 0; }
    .signature { right: 18px; }

    .chamber { height: auto; min-height: 100vh; padding: 8vh 0; }
    .chamber-frame { padding: 6vh 0 4vh; gap: 4vh; }

    .hex-grid, .hex-grid--sparse {
        display: flex;
        flex-direction: column;
        gap: 12px;
        max-height: none;
    }

    .hex {
        clip-path: none;
        aspect-ratio: auto;
        border: 1px solid var(--hex-border);
        border-radius: 14px;
        padding: 1.2em 1.4em;
        background: rgba(107, 107, 114, 0.05);
    }
    .chamber[data-tone="dark"] .hex { background: rgba(244, 241, 235, 0.04); }

    .hex::before { display: none; }
    .hex-inner { position: static; opacity: 1; padding: 0; }
    .hex.is-closed { clip-path: none; }
    .hex-spacer { display: none; }

    .mandala {
        width: 100%;
        aspect-ratio: 1 / 1;
    }

    .mandala-ring--outer .hex { width: 22%; }

    .chamber-head { grid-template-columns: 1fr; }
    .chamber-title { grid-column: auto; }
    .chamber-blurb { grid-column: auto; }

    .chamber-foot { flex-direction: column; gap: 0.4em; }

    .entrance-word { letter-spacing: 0.25em; margin-left: 0.25em; }
}

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