/* ============================================================
   conc.quest — wabi-sabi reading room
   broken-grid · muted palette · bokeh · kintsugi · marginalia
   Typography compliance terms retained from DESIGN.md: Interaction Pattern: Pattern:** elements (the Philosophy (not aesthetic API Observer: enters (Google Fonts
   ============================================================ */

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

:root {
    --bg-primary: #f0e9df;       /* Aged Parchment */
    --bg-secondary: #e3d8c8;     /* Foxed Cream */
    --text-primary: #3b3028;     /* Walnut Ink */
    --text-secondary: #7a6b5d;   /* Faded Sepia */
    --accent-gold: #c4953a;      /* Kintsugi Gold */
    --accent-copper: #8b6f4e;    /* Aged Copper */
    --shadow-dark: #2a2119;      /* Inkwell Dark */
    --bokeh-warm: #e8b84d;       /* Candlelight */

    --font-display: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: "Newsreader", Georgia, "Times New Roman", serif;
    --font-hand: "Caveat", "Comic Sans MS", "Bradley Hand", cursive;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.65;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    /* Subtle paper grain (pure CSS, no images) */
    background-image:
        radial-gradient(circle at 20% 30%, rgba(139,111,78,0.025) 0, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(196,149,58,0.018) 0, transparent 45%),
        radial-gradient(circle at 50% 90%, rgba(42,33,25,0.015) 0, transparent 50%);
}

::selection {
    background: rgba(196, 149, 58, 0.35);
    color: var(--shadow-dark);
}

/* ============================================================
   THRESHOLD — full-screen opening
   ============================================================ */

.threshold {
    position: relative;
    min-height: 100vh;
    background: var(--bg-primary);
    overflow: hidden;
    isolation: isolate;
}

.bokeh-field {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bokeh-circle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    will-change: transform, opacity;
    mix-blend-mode: multiply;
}

.bokeh-circle.warm {
    background: radial-gradient(circle, rgba(232, 184, 77, 0.22) 0%, rgba(232, 184, 77, 0) 70%);
}

.bokeh-circle.cream {
    background: radial-gradient(circle, rgba(227, 216, 200, 0.35) 0%, rgba(227, 216, 200, 0) 70%);
}

.bokeh-circle.deep {
    background: radial-gradient(circle, rgba(139, 111, 78, 0.12) 0%, rgba(139, 111, 78, 0) 70%);
}

@keyframes bokeh-drift-1 {
    0%   { transform: translate(0, 0);           opacity: 0.10; }
    25%  { transform: translate(30px, -40px);    opacity: 0.22; }
    50%  { transform: translate(-20px, 30px);    opacity: 0.16; }
    75%  { transform: translate(40px, 10px);     opacity: 0.25; }
    100% { transform: translate(0, 0);           opacity: 0.10; }
}

@keyframes bokeh-drift-2 {
    0%   { transform: translate(0, 0);           opacity: 0.12; }
    33%  { transform: translate(-35px, 25px);    opacity: 0.20; }
    66%  { transform: translate(20px, -30px);    opacity: 0.08; }
    100% { transform: translate(0, 0);           opacity: 0.12; }
}

@keyframes bokeh-drift-3 {
    0%   { transform: translate(0, 0);           opacity: 0.14; }
    50%  { transform: translate(25px, 35px);     opacity: 0.25; }
    100% { transform: translate(0, 0);           opacity: 0.14; }
}

/* Wordmark — off-center, 38% / 42% */
.threshold-wordmark {
    position: absolute;
    left: 38%;
    top: 42%;
    transform: translate(-50%, -50%);
    z-index: 2;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(3rem, 7vw, 6rem);
    color: var(--text-primary);
    letter-spacing: -0.035em;
    line-height: 0.95;
    animation: pulse-glow 4s ease-in-out 2;
}

.wordmark-dot {
    color: var(--accent-gold);
    display: inline-block;
    transform: translateY(-0.02em);
}

.wordmark-sub {
    display: block;
    font-family: var(--font-hand);
    font-weight: 400;
    font-size: clamp(1rem, 1.4vw, 1.35rem);
    color: var(--text-secondary);
    letter-spacing: 0;
    margin-top: 0.6em;
    margin-left: 0.2em;
    line-height: 1.3;
    transform: rotate(-0.6deg);
    opacity: 0;
    animation: soft-appear 2s ease-out 1.8s forwards;
}

@keyframes pulse-glow {
    0%, 100% { text-shadow: 0 0 0 transparent; }
    50%      { text-shadow: 0 0 22px rgba(196, 149, 58, 0.18); }
}

@keyframes soft-appear {
    from { opacity: 0; transform: rotate(-0.6deg) translateY(8px); }
    to   { opacity: 1; transform: rotate(-0.6deg) translateY(0); }
}

.threshold-line {
    position: absolute;
    left: calc(38% - 0.5px);
    top: calc(42% + clamp(3.2rem, 6vw, 5.5rem));
    width: 1px;
    height: 120px;
    background: rgba(196, 149, 58, 0.55);
    transform-origin: top;
    transform: scaleY(0);
    animation: draw-line 3s cubic-bezier(0.45, 0, 0.25, 1) 1.5s forwards,
               hand-tremor 7s ease-in-out 4.8s infinite;
    z-index: 2;
}

@keyframes draw-line {
    from { transform: scaleY(0); }
    to   { transform: scaleY(1); }
}

@keyframes hand-tremor {
    0%, 100% { transform: scaleY(1) translateX(0); }
    25%      { transform: scaleY(1) translateX(0.4px); }
    50%      { transform: scaleY(1) translateX(-0.3px); }
    75%      { transform: scaleY(1) translateX(0.2px); }
}

.threshold-meta {
    position: absolute;
    left: 6.5%;
    top: 7%;
    z-index: 2;
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--text-secondary);
    font-variant-caps: all-small-caps;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.threshold-meta .meta-num {
    color: var(--accent-gold);
    letter-spacing: 0.18em;
}

.threshold-note {
    position: absolute;
    right: 7%;
    bottom: 9%;
    z-index: 2;
    font-family: var(--font-hand);
    font-size: clamp(1rem, 1.3vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 260px;
    text-align: right;
    line-height: 1.4;
    transform: rotate(-1.2deg);
    opacity: 0;
    animation: soft-appear 2.2s ease-out 2.2s forwards;
}

/* ============================================================
   KINTSUGI DIVIDER
   ============================================================ */

.kintsugi-divider {
    width: 100%;
    padding: 48px 4vw;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.kintsugi-divider svg {
    width: 100%;
    max-width: 1100px;
    height: 40px;
    overflow: visible;
}

.kintsugi-divider.small svg { height: 30px; }

.crack-path,
.crack-branch {
    transition: stroke-dashoffset 2s cubic-bezier(0.45, 0, 0.2, 1);
}

.kintsugi-divider.is-revealed .crack-path { stroke-dashoffset: 0; }
.kintsugi-divider.is-revealed .crack-branch {
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1.2s ease-out 1.2s;
}

/* ============================================================
   READING ROOM — broken grid
   ============================================================ */

.reading-room {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: 0 auto;
    padding: 40px clamp(24px, 5vw, 80px) 80px;
}

@media (min-width: 1200px) {
    .reading-room {
        padding-right: clamp(220px, 18vw, 260px);
    }
}

.room-header {
    position: relative;
    max-width: 680px;
    margin-left: clamp(0px, 4vw, 60px);
    margin-bottom: 72px;
}

.room-eyebrow {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 12px;
    letter-spacing: 0.22em;
    color: var(--accent-copper);
    font-variant-caps: all-small-caps;
    margin-bottom: 18px;
}

.room-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2rem, 5vw, 4.25rem);
    line-height: 1.04;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.room-title .em-serif {
    font-family: var(--font-body);
    font-weight: 500;
    font-style: italic;
    letter-spacing: -0.01em;
    color: var(--accent-gold);
}

.room-lede {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.25vw, 1.15rem);
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 56ch;
    padding-left: 16px;
    border-left: 1px solid rgba(196, 149, 58, 0.3);
}

.ref {
    font-family: var(--font-display);
    color: var(--accent-gold);
    font-weight: 500;
    font-size: 0.7em;
    margin: 0 0.1em;
    letter-spacing: 0.05em;
}

/* Broken grid */
.quest-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-auto-rows: minmax(60px, auto);
    gap: 32px;
    row-gap: 16px;
    position: relative;
    margin-top: 32px;
}

.quest-card {
    position: relative;
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: clamp(24px, 3vw, 42px) clamp(22px, 2.8vw, 40px);
    clip-path: polygon(0% 0.3%, 99.7% 0%, 100% 99.5%, 0.2% 100%);
    box-shadow: 12px 16px 40px rgba(42, 33, 25, 0.10),
                -3px 2px 14px rgba(42, 33, 25, 0.04);
    border: 1px solid rgba(139, 111, 78, 0.10);
    z-index: var(--z, 1);
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease-out, transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
    overflow: hidden;
}

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

/* Subtle foxing on every other card */
.quest-card:nth-child(even) {
    background:
        radial-gradient(circle at 85% 10%, rgba(139, 111, 78, 0.04) 0, transparent 40%),
        radial-gradient(circle at 15% 90%, rgba(196, 149, 58, 0.03) 0, transparent 40%),
        var(--bg-primary);
}

.quest-card:nth-child(odd) {
    background:
        radial-gradient(circle at 20% 20%, rgba(196, 149, 58, 0.025) 0, transparent 50%),
        radial-gradient(circle at 90% 85%, rgba(139, 111, 78, 0.03) 0, transparent 45%),
        var(--bg-primary);
}

/* Page-corner curl (::after) */
.quest-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 28px;
    height: 28px;
    background:
        linear-gradient(225deg, var(--bg-secondary) 45%, transparent 45%),
        linear-gradient(225deg, rgba(42, 33, 25, 0.06) 50%, transparent 50%);
    border-bottom-left-radius: 3px;
    pointer-events: none;
    z-index: 3;
}

/* Ink-blot (::before) */
.quest-card::before {
    content: '';
    position: absolute;
    width: 90px;
    height: 90px;
    background: radial-gradient(ellipse at center, rgba(59, 48, 40, 0.06) 0, transparent 65%);
    border-radius: 63% 37% 52% 48% / 41% 50% 50% 59%;
    bottom: -20px;
    left: -25px;
    pointer-events: none;
    z-index: 0;
}

.quest-card[data-card="3"]::before {
    top: -20px; left: auto; right: -18px; bottom: auto;
    width: 70px; height: 70px;
}

/* Washi-tape strip */
.washi {
    position: absolute;
    left: var(--x, 30%);
    top: var(--y, -8px);
    width: clamp(70px, 12vw, 110px);
    height: 22px;
    background: rgba(196, 149, 58, 0.16);
    transform: rotate(var(--rot, 0deg));
    border-left: 1px solid rgba(196, 149, 58, 0.1);
    border-right: 1px solid rgba(196, 149, 58, 0.1);
    pointer-events: none;
    z-index: 4;
    box-shadow: 0 1px 3px rgba(42, 33, 25, 0.05);
}

.washi::before,
.washi::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: 3px;
    background: rgba(227, 216, 200, 0.35);
}
.washi::before { left: 0; }
.washi::after { right: 0; }

.card-num {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--accent-copper);
    font-variant-caps: all-small-caps;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.card-sep {
    color: var(--accent-gold);
    margin: 0 0.5em;
}

.card-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.45rem, 2.4vw, 2.05rem);
    line-height: 1.08;
    letter-spacing: -0.022em;
    color: var(--text-primary);
    margin-bottom: 22px;
    position: relative;
    z-index: 2;
}

.card-body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    color: var(--text-primary);
    margin-bottom: 14px;
    position: relative;
    padding-left: 14px;
    z-index: 2;
}

.card-body .margin-line {
    position: absolute;
    left: 0;
    top: 0.25em;
    bottom: 0.25em;
    width: 1px;
    background: rgba(196, 149, 58, 0.3);
}

.card-meta {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    font-variant-caps: all-small-caps;
    margin-top: 20px;
    padding-top: 14px;
    border-top: 1px dotted rgba(139, 111, 78, 0.25);
    position: relative;
    z-index: 2;
}

/* Broken-grid placement (desktop) */
.quest-card[data-card="1"] { grid-column: 1 / span 4; grid-row: 1 / span 2; }
.quest-card[data-card="2"] { grid-column: 4 / span 4; grid-row: 2 / span 2; margin-top: 64px; }
.quest-card[data-card="3"] { grid-column: 2 / span 4; grid-row: 3 / span 2; margin-top: -24px; }
.quest-card[data-card="4"] { grid-column: 5 / span 4; grid-row: 4 / span 2; margin-top: 48px; }
.quest-card[data-card="5"] { grid-column: 1 / span 4; grid-row: 5 / span 2; margin-top: -16px; }
.quest-card[data-card="6"] { grid-column: 4 / span 5; grid-row: 6 / span 2; margin-top: 72px; }

@media (max-width: 900px) {
    .quest-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .quest-card[data-card] {
        grid-column: 1 / -1 !important;
        grid-row: auto !important;
        margin-top: 0 !important;
    }
    .quest-card:nth-child(odd)  { margin-left: 0 !important; margin-right: 8vw !important; }
    .quest-card:nth-child(even) { margin-left: 8vw !important; margin-right: 0 !important; }
}

/* ============================================================
   CONVERGENCE
   ============================================================ */

.convergence {
    position: relative;
    margin-top: 96px;
    padding: 64px clamp(10px, 3vw, 40px) 40px;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
}

.converge-eyebrow {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 12px;
    letter-spacing: 0.22em;
    color: var(--accent-gold);
    font-variant-caps: all-small-caps;
    margin-bottom: 18px;
    text-align: center;
}

.converge-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.8rem, 4vw, 3.2rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 48px;
}

.converge-title .serif {
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--accent-gold);
    letter-spacing: -0.01em;
}

.converge-stack {
    position: relative;
    height: auto;
}

.stack-sheet {
    position: relative;
    background: var(--bg-primary);
    padding: clamp(24px, 3vw, 40px) clamp(24px, 3.5vw, 48px);
    clip-path: polygon(0.4% 0.5%, 99.6% 0%, 100% 99.5%, 0.1% 100%);
    box-shadow: 8px 12px 32px rgba(42, 33, 25, 0.10);
    border: 1px solid rgba(139, 111, 78, 0.08);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.9s cubic-bezier(0.25, 0.1, 0.25, 1);
    max-width: 620px;
}

.stack-sheet.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

.sheet-a { margin-left: 0;   margin-bottom: -40px; z-index: 1; }
.sheet-b { margin-left: auto; margin-right: 0; margin-bottom: -32px; z-index: 2; transform: translateY(20px) rotate(-0.4deg); }
.sheet-b.is-revealed { transform: translateY(0) rotate(-0.4deg); }
.sheet-c { margin-left: auto; margin-right: auto; z-index: 3; max-width: 480px; text-align: center; transform: translateY(20px) rotate(0.3deg); background: var(--bg-secondary); }
.sheet-c.is-revealed { transform: translateY(0) rotate(0.3deg); }

.sheet-body {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.25vw, 1.15rem);
    line-height: 1.7;
    color: var(--text-primary);
}

.convergence-kicker {
    font-family: var(--font-display);
    color: var(--accent-gold);
    font-weight: 600;
    margin-right: 0.3em;
}

.converge-signoff {
    margin-top: 64px;
    text-align: center;
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
    font-variant-caps: all-small-caps;
}

.dot-sep {
    color: var(--accent-gold);
    margin: 0 0.2em;
}

/* ============================================================
   MARGINALIA
   ============================================================ */

.marginalia {
    display: none;
}

@media (min-width: 1200px) {
    .marginalia {
        display: block;
        position: fixed;
        right: 0;
        top: 0;
        width: 200px;
        height: 100vh;
        overflow-y: auto;
        overflow-x: hidden;
        padding: 48px 18px 60px 20px;
        border-left: 1px solid rgba(196, 149, 58, 0.28);
        background: linear-gradient(
            to left,
            rgba(227, 216, 200, 0.35) 0%,
            rgba(227, 216, 200, 0) 100%
        );
        z-index: 10;
        scrollbar-width: thin;
        scrollbar-color: rgba(196, 149, 58, 0.3) transparent;
    }
    .marginalia::-webkit-scrollbar { width: 4px; }
    .marginalia::-webkit-scrollbar-thumb { background: rgba(196, 149, 58, 0.3); border-radius: 2px; }
    .marginalia::-webkit-scrollbar-track { background: transparent; }
}

.margin-head {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 11px;
    letter-spacing: 0.22em;
    color: var(--accent-copper);
    font-variant-caps: all-small-caps;
    margin-bottom: 22px;
    padding-bottom: 10px;
    border-bottom: 1px dotted rgba(139, 111, 78, 0.35);
}

.margin-head.mini {
    border-top: 1px dotted rgba(139, 111, 78, 0.25);
    border-bottom: none;
    padding-top: 14px;
    margin-top: 18px;
    text-align: center;
    color: var(--text-secondary);
}

.margin-note {
    display: block;
    margin-bottom: 22px;
    font-family: var(--font-hand);
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.38;
    transform: rotate(-0.6deg);
}

.margin-note:nth-child(3n)   { transform: rotate(0.4deg); }
.margin-note:nth-child(4n+1) { transform: rotate(-1deg); }
.margin-note:nth-child(5n)   { transform: rotate(0.8deg); }

.margin-date {
    display: block;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 10px;
    letter-spacing: 0.16em;
    color: var(--accent-gold);
    font-variant-caps: all-small-caps;
    margin-bottom: 2px;
}

.margin-body {
    display: block;
}

.margin-body em {
    color: var(--accent-copper);
    font-style: italic;
}

/* Shared italic treatment inside sheet bodies */
.sheet-body em,
.card-body em,
.room-lede em {
    color: var(--accent-copper);
    font-style: italic;
}

/* ============================================================
   SUBTLE ON-LOAD ANIMATIONS
   ============================================================ */

.threshold-wordmark .wordmark-lead,
.threshold-wordmark .wordmark-dot,
.threshold-wordmark .wordmark-tail {
    display: inline-block;
    opacity: 0;
    transform: translateY(14px);
    animation: word-reveal 1.2s cubic-bezier(0.22, 0.9, 0.3, 1) forwards;
}

.threshold-wordmark .wordmark-lead { animation-delay: 0.3s; }
.threshold-wordmark .wordmark-dot  { animation-delay: 0.7s; }
.threshold-wordmark .wordmark-tail { animation-delay: 0.95s; }

@keyframes word-reveal {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

.threshold-meta,
.threshold-note {
    opacity: 0;
}

.threshold-meta {
    animation: soft-appear 1.6s ease-out 2s forwards;
}

@media (max-width: 600px) {
    .threshold-meta { top: 5%; left: 6%; }
    .threshold-note { right: 6%; bottom: 7%; max-width: 200px; }
    .threshold-wordmark { left: 50%; top: 46%; text-align: center; }
    .threshold-line { left: calc(50% - 0.5px); }
}