/* ============================================================
   ppuzzle.org -- Political Puzzle (v2)
   Dark-academia split-screen reading room.
   Palette: analogous warm-darks.
   Type:    Space Grotesk / Lora / JetBrains Mono.
   ============================================================ */

:root {
    /* Palette from DESIGN.md */
    --c-walnut:       #1A1612;   /* left panel background */
    --c-oak:          #221E18;   /* right panel background */
    --c-cream:        #E8DFD0;   /* primary text */
    --c-gold:         #C9A84C;   /* primary accent */
    --c-blue:         #5B7B9A;   /* secondary, evidence */
    --c-green:        #6B8F6E;   /* tertiary, citations */
    --c-red:          #9B4D4D;   /* editorial / critical */

    --c-cream-soft:   rgba(232, 223, 208, 0.78);
    --c-cream-faint:  rgba(232, 223, 208, 0.42);
    --c-gold-faint:   rgba(201, 168, 76, 0.20);
    --c-gold-glow:    rgba(201, 168, 76, 0.05);
    --c-blue-faint:   rgba(91, 123, 154, 0.35);
    --c-line:         rgba(232, 223, 208, 0.12);

    /* Type */
    --f-sans: "Space Grotesk", "Inter", system-ui, sans-serif;
    --f-serif: "Lora", "Georgia", serif;
    --f-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

    --header-h: 48px;
}

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

html, body {
    height: 100%;
    overflow: hidden;
    background: var(--c-walnut);
    color: var(--c-cream);
    font-family: var(--f-serif);
    font-size: 17px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ===== Header ===== */
.header-bar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    z-index: 100;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 28px;
    background: rgba(13, 10, 8, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--c-line);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--c-cream);
    font-family: var(--f-sans);
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}
.header-mark { flex-shrink: 0; }
.wordmark { font-weight: 700; color: var(--c-gold); }
.wordmark-divider { color: var(--c-cream-faint); }
.wordmark-domain {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: lowercase;
    color: var(--c-cream-soft);
}

.header-nav {
    display: flex;
    gap: 22px;
    justify-self: center;
}
.nav-link {
    font-family: var(--f-sans);
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-cream-soft);
    text-decoration: none;
    padding: 4px 0;
    border-bottom: 1px solid transparent;
    transition: color 220ms ease, border-color 220ms ease;
}
.nav-link:hover,
.nav-link.active { color: var(--c-gold); border-bottom-color: var(--c-gold); }

.header-right {
    display: flex;
    gap: 16px;
    justify-self: end;
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--c-cream-faint);
}
.header-folio { color: var(--c-gold); }

/* ===== Reading Lamp (cursor-follow) ===== */
.reading-lamp {
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 60;
    background: radial-gradient(
        circle 220px at var(--mx, 50%) var(--my, 50%),
        var(--c-gold-glow),
        transparent 70%
    );
    opacity: var(--lamp-opacity, 1);
    transition: opacity 400ms ease;
    mix-blend-mode: screen;
}

/* ===== Connection Lines Overlay ===== */
.connection-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 70;
}
.connection-overlay line {
    stroke: var(--c-gold);
    stroke-width: 1;
    opacity: 0;
    transition: opacity 500ms ease;
}
.connection-overlay line.visible { opacity: 0.30; }

/* ===== Split-Screen ===== */
.split-screen {
    display: grid;
    grid-template-columns: 45fr 1px 55fr;
    height: 100vh;
    padding-top: var(--header-h);
}

.panel {
    height: calc(100vh - var(--header-h));
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    position: relative;
}
.panel-left  { background: var(--c-walnut); }
.panel-right { background: var(--c-oak); }

.panel::-webkit-scrollbar { width: 6px; }
.panel::-webkit-scrollbar-track { background: transparent; }
.panel::-webkit-scrollbar-thumb {
    background: var(--c-gold-faint);
    border-radius: 3px;
}
.panel::-webkit-scrollbar-thumb:hover { background: var(--c-gold); }

.panel-inner {
    padding: 64px 56px 96px;
    position: relative;
}
.panel-left .panel-inner {
    max-width: 520px;
    margin-left: auto;
    margin-right: 32px;
}
.panel-right .panel-inner {
    max-width: 600px;
    margin-left: 32px;
    margin-right: auto;
}

/* ===== Central Corridor ===== */
.corridor {
    position: relative;
    height: calc(100vh - var(--header-h));
    background: var(--c-walnut);
}
.corridor::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        var(--c-walnut) 0%,
        var(--c-oak) 100%
    );
}
.corridor-rule {
    position: absolute;
    top: 32px; bottom: 32px;
    left: 50%;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--c-gold-faint) 12%,
        var(--c-gold-faint) 88%,
        transparent 100%
    );
    transform: translateX(-50%);
}

/* ===== Frontispiece ===== */
.panel-frontispiece {
    margin-bottom: 96px;
    padding-top: 32px;
}
.frontispiece-meta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--c-gold);
    margin-bottom: 32px;
    padding: 4px 12px;
    border: 1px solid var(--c-gold-faint);
}
.meta-glyph { font-size: 14px; line-height: 1; }
.meta-text  { color: var(--c-cream-soft); text-transform: uppercase; }
.frontispiece-meta .meta-text { color: var(--c-cream-soft); }

.panel-title {
    font-family: var(--f-sans);
    font-weight: 700;
    font-size: clamp(28px, 3.5vw, 44px);
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--c-cream);
    margin-bottom: 18px;
}
.panel-subtitle {
    font-family: var(--f-serif);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(16px, 1.4vw, 18px);
    line-height: 1.6;
    color: var(--c-cream-soft);
    margin-bottom: 28px;
    max-width: 460px;
}
.evidence-frontispiece .panel-subtitle { max-width: 520px; }

.panel-rule {
    width: 64px;
    height: 1px;
    background: var(--c-gold);
}

/* ===== Essays (Left Panel) ===== */
.essay {
    margin-bottom: 96px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 700ms ease, transform 700ms ease;
}
.essay.in-view {
    opacity: 1;
    transform: none;
}

.essay-header {
    margin-bottom: 28px;
    border-top: 1px solid var(--c-line);
    padding-top: 24px;
    position: relative;
}
.essay-number {
    position: absolute;
    top: -14px;
    left: 0;
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--c-walnut);
    background: var(--c-gold);
    padding: 4px 10px;
}
.essay-eyebrow {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-blue);
    margin-bottom: 12px;
}
.essay-title {
    font-family: var(--f-sans);
    font-weight: 700;
    font-size: clamp(22px, 2.4vw, 30px);
    line-height: 1.18;
    letter-spacing: -0.018em;
    color: var(--c-cream);
    margin-bottom: 14px;
}
.symbol-prefix {
    color: var(--c-gold);
    font-size: 0.78em;
    margin-right: 6px;
    vertical-align: 0.12em;
}
.essay-meta {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--c-cream-faint);
}
.meta-author { color: var(--c-cream-soft); }
.meta-dot    { margin: 0 8px; color: var(--c-gold-faint); }

/* ===== Essay Body ===== */
.essay p {
    margin-bottom: 22px;
    color: var(--c-cream);
    font-size: clamp(16px, 1.05vw, 17px);
    line-height: 1.82;
}
.essay p.lead {
    font-size: clamp(17px, 1.2vw, 19px);
    line-height: 1.72;
    color: var(--c-cream);
}
.essay em { color: var(--c-gold); font-style: italic; font-weight: 700; }

.dropcap {
    float: left;
    font-family: var(--f-sans);
    font-weight: 700;
    font-size: 64px;
    line-height: 0.92;
    color: var(--c-gold);
    margin: 6px 10px 0 0;
    padding: 0;
    letter-spacing: -0.04em;
}

.inline-mark {
    background: linear-gradient(
        to top,
        var(--c-gold-faint) 0%,
        var(--c-gold-faint) 32%,
        transparent 32%,
        transparent 100%
    );
    padding: 0 2px;
    color: var(--c-cream);
}

.symbol-inline {
    display: inline-block;
    color: var(--c-gold);
    font-size: 0.86em;
    margin: 0 2px;
    vertical-align: 0.06em;
}

.pull-quote {
    font-family: var(--f-serif);
    font-style: italic;
    font-weight: 700;
    font-size: clamp(18px, 1.6vw, 22px);
    line-height: 1.5;
    color: var(--c-cream);
    margin: 36px 0 36px 0;
    padding: 0 0 0 28px;
    border-left: 2px solid var(--c-gold);
}

.footnote-ref {
    display: inline-block;
    font-family: var(--f-mono);
    font-size: 10px;
    color: var(--c-walnut);
    background: var(--c-gold);
    padding: 1px 5px;
    margin: 0 1px;
    vertical-align: 0.28em;
    cursor: help;
    transition: background 200ms ease;
}
.footnote-ref:hover { background: var(--c-cream); }

.conclusion-line {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--c-line);
    font-family: var(--f-serif);
    font-size: 15px;
    color: var(--c-cream-soft);
}
.conclusion-line em { color: var(--c-green); font-style: italic; font-weight: 700; }

/* ===== Evidence Blocks (Right Panel) ===== */
.evidence-block {
    margin-bottom: 96px;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 700ms ease, transform 700ms ease;
}
.evidence-block.in-view {
    opacity: 1;
    transform: scale(1);
}

.evidence-header {
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--c-line);
}
.evidence-tag {
    display: inline-block;
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-blue);
    margin-bottom: 12px;
    padding: 3px 0;
}
.evidence-title {
    font-family: var(--f-sans);
    font-weight: 500;
    font-size: clamp(18px, 1.6vw, 22px);
    line-height: 1.32;
    letter-spacing: -0.012em;
    color: var(--c-cream);
}
.evidence-title em { color: var(--c-gold); font-style: italic; }

/* ===== Generative Art Block ===== */
.generative-art {
    margin: 24px 0 32px;
    padding: 0;
    background: var(--c-walnut);
    border: 1px solid var(--c-line);
    position: relative;
    overflow: hidden;
}
.art-svg {
    display: block;
    width: 100%;
    height: 220px;
    background: linear-gradient(
        135deg,
        var(--c-walnut) 0%,
        rgba(34, 30, 24, 0.92) 100%
    );
}
.art-caption {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--c-cream-faint);
    padding: 10px 14px;
    border-top: 1px solid var(--c-line);
    background: var(--c-oak);
}
.art-caption-label {
    color: var(--c-gold);
    margin-right: 6px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.art-caption em { color: var(--c-cream-soft); font-style: italic; }

/* ===== Source Lists ===== */
.source-list {
    list-style: none;
    margin: 24px 0;
    padding: 0;
    border-top: 1px solid var(--c-line);
}
.source-list li {
    display: grid;
    grid-template-columns: 18px 1fr auto;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--c-line);
    font-family: var(--f-serif);
    font-size: 14px;
    line-height: 1.5;
    color: var(--c-cream-soft);
}
.src-tag {
    color: var(--c-green);
    font-size: 10px;
    line-height: 1.6;
}
.src-title em { color: var(--c-gold); font-style: italic; }
.src-page {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--c-cream-faint);
    white-space: nowrap;
    align-self: center;
}

/* ===== Footnotes ===== */
.footnote {
    margin: 20px 0;
    padding: 14px 18px;
    background: rgba(232, 223, 208, 0.03);
    border-left: 2px solid var(--c-blue);
    font-family: var(--f-serif);
    font-size: 13px;
    line-height: 1.65;
    color: var(--c-cream-soft);
}
.fn-num {
    font-family: var(--f-mono);
    color: var(--c-blue);
    margin-right: 8px;
    font-size: 11px;
    letter-spacing: 0.04em;
}

/* ===== Margin Notes (Editorial Red) ===== */
.margin-note {
    margin: 18px 0;
    padding: 12px 16px;
    border: 1px dashed var(--c-red);
    background: rgba(155, 77, 77, 0.05);
    font-family: var(--f-serif);
    font-style: italic;
    font-size: 13px;
    line-height: 1.6;
    color: var(--c-cream-soft);
    position: relative;
}
.margin-glyph {
    color: var(--c-red);
    margin-right: 6px;
    font-style: normal;
}

/* ===== Data Table (bars) ===== */
.data-table {
    margin: 24px 0;
    padding: 18px 18px 14px;
    border: 1px solid var(--c-line);
    background: rgba(232, 223, 208, 0.02);
}
.data-caption {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--c-cream-faint);
    margin-bottom: 14px;
}
.bar-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.bar-list li {
    display: grid;
    grid-template-columns: 110px 1fr 36px;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--c-cream-soft);
}
.bar-label { white-space: nowrap; }
.bar {
    height: 8px;
    background: var(--c-line);
    position: relative;
    overflow: hidden;
}
.bar-fill {
    display: block;
    height: 100%;
    width: var(--w);
    background: linear-gradient(
        to right,
        var(--c-gold) 0%,
        var(--c-blue) 100%
    );
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1100ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.evidence-block.in-view .bar-fill { transform: scaleX(1); }
.bar-value {
    color: var(--c-gold);
    text-align: right;
}

/* ===== Oath Table ===== */
.oath-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--c-cream);
}
.oath-caption {
    text-align: left;
    padding: 0 0 10px;
    color: var(--c-cream-faint);
    font-size: 11px;
    letter-spacing: 0.06em;
}
.oath-table th,
.oath-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--c-line);
}
.oath-table th {
    color: var(--c-gold);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.14em;
    border-bottom: 1px solid var(--c-gold-faint);
}
.oath-table td:first-child { color: var(--c-cream); }
.oath-table td:last-child {
    color: var(--c-blue);
    text-align: right;
}

/* ===== Ledger Block ===== */
.ledger-block {
    display: grid;
    grid-template-columns: 1fr 1px 1.4fr;
    gap: 18px;
    margin: 24px 0;
    padding: 18px;
    border: 1px solid var(--c-line);
    position: relative;
}
.ledger-block::before {
    content: "";
    position: absolute;
    top: 18px; bottom: 18px;
    left: calc(1fr + 9px);
    background: var(--c-line);
}
.ledger-col { min-width: 0; }
.ledger-title {
    font-family: var(--f-sans);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-gold);
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--c-gold-faint);
}
.ledger-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.ledger-list li {
    font-family: var(--f-serif);
    font-size: 13px;
    line-height: 1.6;
    color: var(--c-cream-soft);
    padding: 4px 0 4px 16px;
    position: relative;
}
.ledger-list li::before {
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 8px;
    height: 8px;
    line-height: 1;
}
.ledger-list--kept li::before {
    content: "";
    background: var(--c-green);
}
.ledger-list--unkept li::before {
    content: "";
    background: var(--c-red);
    opacity: 0.7;
}

/* Vertical divider inside ledger via pseudo */
.ledger-block {
    grid-template-columns: 1fr 1.4fr;
}
.ledger-block .ledger-col + .ledger-col {
    border-left: 1px solid var(--c-line);
    padding-left: 18px;
}

/* ===== Colophon Text ===== */
.colophon-text {
    font-family: var(--f-serif);
    font-size: 14px;
    line-height: 1.78;
    color: var(--c-cream-soft);
    margin-bottom: 16px;
}
.colophon-text em { color: var(--c-gold); font-style: italic; }

/* ===== Panel Footer ===== */
.panel-footer {
    margin-top: 96px;
    padding-top: 32px;
    border-top: 1px solid var(--c-line);
    text-align: left;
}
.panel-footer--right { text-align: left; }
.footer-mark {
    font-size: 18px;
    letter-spacing: 0.6em;
    color: var(--c-gold);
    margin-bottom: 14px;
}
.footer-text {
    font-family: var(--f-serif);
    font-style: italic;
    font-size: 14px;
    line-height: 1.6;
    color: var(--c-cream-soft);
    margin-bottom: 12px;
    max-width: 420px;
}
.footer-imprint {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--c-cream-faint);
    text-transform: uppercase;
}

/* ===== Active panel highlight (subtle) ===== */
.panel.active-panel {
    box-shadow: inset 0 0 0 0 var(--c-gold);
}

/* ===== Responsive: Stack below 768px ===== */
@media (max-width: 768px) {
    html, body { overflow: auto; height: auto; }
    .header-bar {
        grid-template-columns: 1fr auto;
        padding: 0 16px;
    }
    .header-nav { display: none; }
    .header-right { display: none; }

    .reading-lamp { display: none; }
    .connection-overlay { display: none; }

    .split-screen {
        grid-template-columns: 1fr;
        height: auto;
    }
    .corridor { display: none; }
    .panel {
        height: auto;
        overflow: visible;
    }
    .panel-inner {
        padding: 40px 22px 64px;
        max-width: 100%;
        margin: 0;
    }
    .panel-left .panel-inner,
    .panel-right .panel-inner {
        max-width: 100%;
        margin: 0;
    }
    .panel-frontispiece { margin-bottom: 56px; }
    .essay,
    .evidence-block { margin-bottom: 56px; }

    .panel-right { border-top: 1px solid var(--c-gold-faint); }
    .pull-quote {
        font-size: 18px;
        padding-left: 18px;
    }
    .ledger-block { grid-template-columns: 1fr; }
    .ledger-block .ledger-col + .ledger-col {
        border-left: none;
        border-top: 1px solid var(--c-line);
        padding-left: 0;
        padding-top: 14px;
        margin-top: 4px;
    }
    .source-list li {
        grid-template-columns: 18px 1fr;
    }
    .src-page { grid-column: 2; padding-left: 0; }
}

@media (max-width: 480px) {
    .panel-inner { padding: 32px 16px 48px; }
    .dropcap { font-size: 48px; }
    .panel-title { font-size: 26px; }
    .essay-title { font-size: 20px; }
}