/* =============================================================================
   style.css — the single stylesheet for the whole app.
   Aesthetic: a warm "art gallery / museum" theme (parchment background, forest
   green + gold accents, Cinzel display headings). The file is organised into
   labelled sections (search for the "── NAME ──" banners): header, layout,
   panels, form inputs, buttons, results cards, modals, timeline, proof tables,
   etc. Two things worth knowing up front:
     * Colours/sizes are CSS custom properties in :root (the --names below), so
       the palette lives in one place.
     * Modals are CSS-only: `.modal` is hidden by default and revealed by
       `.modal:target` when the URL hash matches the modal's id (see MODALS).
   ============================================================================= */

/* ── Design tokens — Fair Division Gallery ─────────────────────────────── */
/* The whole palette + a couple of layout constants. Referenced everywhere via
   var(--name); change a colour here and it updates across the app. */
:root {
  --bg: #f2ede4;            /* page background (parchment) */
  --surface: #ede5d8;       /* slightly darker insets / table headers backdrop */
  --card: #faf7f1;          /* card / panel background */
  --card-shadow: rgba(80,60,20,0.13);
  --sage: #6b7c5e;          /* secondary green family */
  --sage-dark: #4a5940;
  --sage-light: #9aad8a;
  --gold: #b8882a;          /* accent / highlight family */
  --gold-light: #d4aa4e;
  --gold-dark: #8a6010;
  --forest: #2d5a3d;        /* primary green (headings, primary buttons) */
  --forest-light: #4a7c5a;
  --text: #2a2018;          /* body text */
  --text-muted: #6b5d4a;    /* secondary text */
  --text-light: #9a8a7a;    /* placeholder / disabled text */
  --success: #2d5a3d;       /* OK / verified states */
  --warning: #8a6010;
  --danger: #7a2020;        /* errors / envy / constraint violations */
  --border: #c8b89a;        /* hairline borders */
  --sidebar-w: 490px;       /* fixed width of the left form column */
}

/* Reset: predictable box model and no default margins/padding anywhere. */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  /* Faint horizontal "ruled paper" lines layered over the background colour. */
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 40px,
      rgba(140,110,60,0.025) 40px,
      rgba(140,110,60,0.025) 41px
    );
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--forest); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── HEADER (sticky) ──────────────────────────────────────────────────── */
.gallery-header {
  background: linear-gradient(180deg, #faf7f1 0%, #f0ead8 100%);
  border-bottom: 3px solid var(--gold);
  text-align: center;
  padding: 16px 20px 12px;
  position: sticky;
  top: 0;
  z-index: 200;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(80,60,20,0.08);
}
.gallery-header::before, .gallery-header::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--sage-light), transparent);
}
.gallery-header::before { top: 6px; }
.gallery-header::after  { bottom: 6px; }
.header-flourish { display: none; }
.gallery-title-row { display: block; }
.gallery-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.1rem, 2.6vw, 1.75rem);
  font-weight: 700;
  color: var(--forest);
  letter-spacing: 1.5px;
  text-shadow: 0 1px 4px rgba(45,90,61,0.12);
  line-height: 1.2;
  margin: 0;
  white-space: nowrap;
}
.gallery-title a, .gallery-title a:visited { color: inherit; text-decoration: none; }
.gallery-subtitle, .subtitle {
  font-style: italic;
  color: var(--text-muted);
  margin-top: 6px;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}
.gallery-credits {
  margin-top: 5px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.paper-authors { font-style: italic; }
.paper-impl { font-style: italic; }
.paper-divider { color: var(--gold); margin: 0 5px; opacity: 0.6; }
.paper-authors strong, .paper-impl strong { color: var(--text); font-style: normal; }
.title-diamond { display: none; }
.corner-diamond {
  position: absolute;
  width: 10px; height: 10px;
  background: var(--gold);
  transform: rotate(45deg);
  top: 50%; margin-top: -5px;
}
.corner-diamond.left  { left: 18px; }
.corner-diamond.right { right: 18px; }
@media (max-width: 700px) {
  .gallery-title { white-space: normal; font-size: 1.05rem; }
}
.gallery-nav {
  position: absolute;
  top: 50%;
  left: 38px;
  transform: translateY(-50%);
  display: flex;
  gap: 8px;
  z-index: 5;
}
.gallery-nav-link {
  font-family: 'Cinzel', serif;
  font-size: 0.78rem;
  letter-spacing: 1.5px;
  color: var(--gold-dark);
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 14px;
  border: 1px solid var(--gold);
  border-radius: 3px;
  transition: all 0.2s;
  background: rgba(255,248,240,0.5);
}
.gallery-nav-link:hover { color: #fff; background: var(--gold); text-decoration: none; }

/* arXiv paper button on the right */
.paper-button {
  position: absolute;
  top: 50%;
  right: 38px;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #fff;
  font-family: 'Cinzel', serif;
  font-size: 0.78rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 3px;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(138,96,16,0.3);
  transition: all 0.2s;
  text-decoration: none !important;
  z-index: 5;
}
.paper-button:hover {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: #fff;
  text-decoration: none !important;
  box-shadow: 0 3px 10px rgba(138,96,16,0.45);
  transform: translateY(-50%) scale(1.04);
}
.paper-icon { font-size: 0.85rem; }

/* ── MAIN LAYOUT ──────────────────────────────────────────────────────── */
/* Two-column grid: fixed-width sidebar (the form) + flexible main area.
   The media query below collapses it to a single column on narrow screens. */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 20px;
  align-items: start;
}
@media (max-width: 900px) {
  .app-layout { grid-template-columns: 1fr; }
  .sidebar { position: static !important; max-height: none !important; }
}

/* ── PANEL CARDS (parchment) ──────────────────────────────────────────── */
.sidebar, .main-area {
  background: var(--card);
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 28px,
      rgba(180,150,80,0.035) 28px,
      rgba(180,150,80,0.035) 29px
    );
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 2px 12px var(--card-shadow), inset 0 0 60px rgba(180,160,100,0.04);
  position: relative;
  overflow: hidden;
}

/* The sidebar sticks in place while the main content scrolls; its body
   (#main-form) scrolls internally if the form gets tall. */
.sidebar {
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 110px);
  position: sticky;
  top: 96px;
}

.panel-header {
  background: linear-gradient(90deg, var(--forest), var(--sage-dark));
  border-bottom: 1px solid var(--gold-dark);
  padding: 14px 20px;
  font-family: 'Cinzel', serif;
  font-size: 0.8rem;
  letter-spacing: 2.5px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
}
.panel-diamond { color: var(--gold-light); font-size: 0.85rem; }

/* ── Example actions at the top of the sidebar ────────────────────────── */
.example-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  padding: 14px 20px;
  background: linear-gradient(180deg, rgba(184,136,42,0.08), transparent);
  border-bottom: 1px solid var(--border);
}
.example-btn {
  font-size: 0.66rem !important;
  padding: 10px 6px !important;
  letter-spacing: 0.9px !important;
  text-align: center;
}

/* ── Help button in panel header ──────────────────────────────────────── */
.panel-header {
  justify-content: space-between !important;
}
.panel-header-text {
  display: flex;
  align-items: center;
  gap: 10px;
}
.panel-help-btn {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none !important;
  transition: all 0.2s;
  font-weight: 700;
  flex-shrink: 0;
}
.panel-help-btn:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
  text-decoration: none !important;
}

/* ── FORM (sidebar body) ──────────────────────────────────────────────── */
#main-form {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-section { margin-bottom: 18px; }
.sidebar-section:last-child { margin-bottom: 0; }

.section-label {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 2px;
  color: var(--forest);
  border-bottom: 1px solid var(--gold-light);
  padding-bottom: 7px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  font-weight: 700;
}
.section-label::before {
  content: '◆';
  font-size: 0.55rem;
  color: var(--gold);
}
.section-dot { display: none; }

/* ── INPUTS ───────────────────────────────────────────────────────────── */
input[type="text"], input[type="number"] {
  background: #fff8f0;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 0.92rem;
  border-radius: 3px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
input[type="text"]:focus, input[type="number"]:focus {
  border-color: var(--sage);
  box-shadow: 0 0 0 2px rgba(107,124,94,0.2);
}
input::placeholder { color: var(--text-light); }

.text-input { width: 100%; }
.cat-name-input { width: 100%; }
.number-input, .cat-cap {
  width: 70px;
  text-align: center;
}

/* ── AGENT ROW ────────────────────────────────────────────────────────── */
.agent-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.agent-row input { flex: 1; }
.agent-name { flex: 1; }

/* ── BUTTONS ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 3px;
  cursor: pointer;
  font-family: 'Cinzel', serif;
  transition: all 0.2s;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: none;
  text-decoration: none !important;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--forest), var(--sage-dark));
  color: #fff;
  padding: 12px 32px;
  font-size: 0.82rem;
  letter-spacing: 1.5px;
  box-shadow: 0 3px 10px rgba(45,90,61,0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--forest-light), var(--sage));
  box-shadow: 0 4px 14px rgba(45,90,61,0.4);
  transform: translateY(-1px);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  border: 1.5px solid var(--gold);
  color: var(--gold-dark);
  padding: 10px 22px;
}
.btn-secondary:hover { background: var(--gold); color: #fff; text-decoration: none !important; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--text-light);
  color: var(--text-muted);
  padding: 7px 14px;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-dark); text-decoration: none !important; }

.add-btn {
  background: transparent;
  border: 1px solid var(--sage);
  color: var(--sage-dark);
  padding: 6px 13px;
  font-size: 0.68rem;
  font-family: 'Cinzel', serif;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 4px;
}
.add-btn:hover { background: var(--sage-light); color: #fff; }

.remove-btn, .remove-agent, .remove-item, .remove-cat {
  background: transparent;
  border: 1px solid #c8a0a0;
  color: #aa4444;
  padding: 5px 10px;
  font-size: 0.7rem;
  cursor: pointer;
  border-radius: 3px;
  font-family: 'Cinzel', serif;
  letter-spacing: 1px;
  transition: all 0.2s;
  font-weight: 600;
  text-transform: uppercase;
  flex-shrink: 0;
}
.remove-btn:hover:not(:disabled),
.remove-agent:hover:not(:disabled),
.remove-item:hover:not(:disabled),
.remove-cat:hover:not(:disabled) {
  background: rgba(122,32,32,0.12);
  border-color: var(--danger);
}
.remove-btn:disabled,
.remove-agent:disabled,
.remove-item:disabled,
.remove-cat:disabled { opacity: 0.3; cursor: not-allowed; }

.remove-cat-btn {
  background: transparent;
  border: 1px solid #c8a0a0;
  color: #aa4444;
  padding: 5px 10px;
  font-size: 0.7rem;
  cursor: pointer;
  border-radius: 3px;
  font-family: 'Cinzel', serif;
  letter-spacing: 1px;
  transition: all 0.2s;
  font-weight: 600;
  text-transform: uppercase;
  align-self: flex-end;
}
.remove-cat-btn:hover:not(:disabled) { background: rgba(122,32,32,0.12); border-color: var(--danger); }
.remove-cat-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ── CATEGORY BLOCK ───────────────────────────────────────────────────── */
.category-block {
  background: #fff8f0;
  border: 1px solid var(--border);
  border-left: 3px solid var(--sage-light);
  border-radius: 3px;
  padding: 14px;
  margin-bottom: 12px;
}
.cat-header {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.cat-fields {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  flex: 1;
  flex-wrap: wrap;
}
.cat-field-group { display: flex; flex-direction: column; gap: 3px; flex: 1; min-width: 100px; }
.cat-field-group:nth-child(2) { flex: 0; min-width: 70px; }
.cat-field-label, .cat-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  font-family: 'Cinzel', serif;
  text-transform: uppercase;
  display: block;
}
.cap-label { display: flex; flex-direction: column; gap: 3px; }

/* ── GOODS LIST ───────────────────────────────────────────────────────── */
.goods-label {
  font-family: 'Cinzel', serif;
  font-size: 0.62rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin: 10px 0 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.goods-label::before { content: '◆'; color: var(--gold); font-size: 0.55rem; }

.items-container {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.item-row {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 3px 4px 3px 8px;
}
.item-input {
  background: transparent;
  border: none;
  width: 80px;
  padding: 3px 5px;
  font-size: 0.88rem;
  font-family: 'Inter', sans-serif;
}
.item-input:focus { box-shadow: none; outline: none; }
.add-item { padding: 3px 9px; font-size: 0.65rem; }

/* ── VALUATIONS MATRIX ─────────────────────────────────────────────────── */
.val-table-wrapper { overflow-x: auto; }
#val-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.88rem;
}
#val-table th {
  background: var(--sage-dark);
  color: #fff;
  font-family: 'Cinzel', serif;
  font-size: 0.62rem;
  letter-spacing: 1px;
  padding: 7px 8px;
  text-align: center;
  border: 1px solid var(--border);
  white-space: nowrap;
  text-transform: uppercase;
}
#val-table td {
  border: 1px solid var(--border);
  padding: 4px 6px;
  text-align: center;
  background: #fff;
}
#val-table tr:nth-child(even) td { background: #faf7f1; }
#val-table td.item-label, #val-table .item-label {
  text-align: left;
  color: var(--text-muted);
  font-style: italic;
  padding-left: 10px;
  white-space: nowrap;
  background: var(--surface);
  font-weight: 500;
}
#val-table input[type="number"] {
  width: 52px;
  padding: 3px 4px;
  text-align: center;
  font-size: 0.88rem;
  background: transparent;
  border: none;
}
#val-table input[type="number"]:focus { box-shadow: none; background: #fff8f0; }
#val-table .cat-header-row td {
  background: var(--sage);
  color: #fff;
  font-family: 'Cinzel', serif;
  font-size: 0.6rem;
  letter-spacing: 2px;
  font-weight: 600;
  padding: 6px 8px;
  text-transform: uppercase;
}

/* ── SIDEBAR ACTIONS (sticky Run button area) ────────────────────────── */
.sidebar-actions {
  flex-shrink: 0;
  padding: 16px 22px 18px;
  border-top: 2px solid var(--gold);
  background: linear-gradient(180deg, #faf7f1, #f0ead8);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  box-shadow: 0 -3px 10px rgba(80,60,20,0.08);
}
.sidebar-actions .btn-primary {
  padding: 14px 22px;
  font-size: 0.92rem;
  letter-spacing: 2px;
  width: 100%;
}

/* Randomize values button near the table */
.section-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.section-label-row .section-label { flex: 1; margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.section-label-row { border-bottom: 1px solid var(--gold-light); padding-bottom: 7px; margin-bottom: 14px; }
.btn-mini {
  background: transparent;
  border: 1px solid var(--sage);
  color: var(--sage-dark);
  padding: 5px 11px;
  font-size: 0.66rem;
  font-family: 'Cinzel', serif;
  letter-spacing: 1.2px;
  border-radius: 3px;
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}
.btn-mini:hover { background: var(--sage-light); color: #fff; border-color: var(--sage); }

/* Random form inline (used inside examples modal) */
.random-inline-form { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.rand-field {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: 'Cinzel', serif;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.rand-input {
  width: 50px;
  text-align: center;
  padding: 5px 6px !important;
  font-size: 0.85rem;
}

/* ── EXAMPLES MENU ────────────────────────────────────────────────────── */
.examples-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.example-card {
  display: block;
  background: #fff8f0;
  border: 1px solid var(--border);
  border-left: 4px solid var(--forest);
  border-radius: 3px;
  padding: 14px 18px;
  text-decoration: none !important;
  color: var(--text);
  transition: all 0.2s;
}
.example-card:hover {
  border-left-color: var(--gold);
  background: #fff4e0;
  box-shadow: 0 2px 10px rgba(80,60,20,0.1);
  transform: translateX(2px);
}
.example-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.example-icon { color: var(--gold); font-size: 0.8rem; }
.example-name {
  font-family: 'Cinzel', serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--forest);
}
.example-desc { font-size: 0.86rem; color: var(--text-muted); margin-bottom: 6px; line-height: 1.5; }
.example-meta {
  font-family: 'Cinzel', serif;
  font-size: 0.68rem;
  letter-spacing: 1.5px;
  color: var(--gold-dark);
  text-transform: uppercase;
}
.example-card-random { border-left-color: var(--gold); }
.example-card-random:hover { background: #fff4e0; transform: none; }

/* ── MAIN AREA / RESULTS PANEL ────────────────────────────────────────── */
.main-area { display: flex; flex-direction: column; }
.main-content { padding: 22px; display: flex; flex-direction: column; gap: 14px; }

/* ── EXPLANATION CARD (index page) ─────────────────────────────────────── */
.explanation-card {
  background: #fff8f0;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 22px;
}
.page-title {
  font-family: 'Cinzel', serif;
  font-size: 1.3rem;
  letter-spacing: 2px;
  color: var(--forest);
  margin-bottom: 4px;
  text-transform: uppercase;
  font-weight: 700;
}
.page-subtitle, .subtitle {
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: 0.9rem;
}
.explainer-section { margin-bottom: 16px; }
.explainer-heading {
  font-family: 'Cinzel', serif;
  font-size: 0.78rem;
  letter-spacing: 2px;
  color: var(--forest);
  text-transform: uppercase;
  border-bottom: 1px solid var(--gold-light);
  padding-bottom: 5px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.explainer-heading::before { content: '◆'; color: var(--gold); font-size: 0.6rem; }
.explainer-steps, .explainer-list { padding-left: 20px; display: flex; flex-direction: column; gap: 6px; font-size: 0.92rem; color: var(--text); }
.citation-block {
  background: var(--surface);
  border-left: 3px solid var(--gold);
  padding: 12px 14px;
  border-radius: 2px;
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.paper-link { color: var(--gold-dark); font-weight: 600; }
.hint-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--sage);
  border-radius: 3px;
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.hint-card strong { color: var(--text); }

/* ── INPUT SUMMARY ────────────────────────────────────────────────────── */
.input-summary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 12px 16px;
}
.summary-toggle {
  cursor: pointer;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  list-style: none;
}
.summary-toggle::-webkit-details-marker { display: none; }
.summary-toggle::before { content: '▶ '; color: var(--gold); }
details[open] > .summary-toggle::before { content: '▼ '; }
.summary-body { padding-top: 12px; display: flex; flex-direction: column; gap: 10px; }
.summary-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-start; font-size: 0.86rem; }
.summary-key { font-family: 'Cinzel', serif; font-size: 0.68rem; color: var(--text-muted); letter-spacing: 1.5px; min-width: 80px; text-transform: uppercase; }
.nested-details { border-top: 1px solid var(--border); padding-top: 10px; margin-top: 6px; }
.nested-details summary { cursor: pointer; font-size: 0.78rem; color: var(--text-muted); font-family: 'Cinzel', serif; letter-spacing: 1px; }
.val-display-table { border-collapse: collapse; font-size: 0.92rem; margin-top: 10px; width: 100%; }
.val-display-table th, .val-display-table td { border: 1px solid var(--border); padding: 7px 14px; text-align: center; }
.val-display-table th { background: var(--sage-dark); color: #fff; font-family: 'Cinzel', serif; font-size: 0.7rem; letter-spacing: 1.5px; text-transform: uppercase; padding: 8px 14px; }
.val-display-table .cat-header-row td { background: var(--sage); color: #fff; font-family: 'Cinzel', serif; font-size: 0.68rem; letter-spacing: 2px; text-transform: uppercase; padding: 7px 14px; }
.val-display-table .item-label { text-align: left; color: var(--text-muted); font-style: italic; background: var(--surface); padding-left: 16px; }

/* ── ALLOCATION CARDS ──────────────────────────────────────────────────── */
.allocation-grid { display: flex; flex-direction: column; gap: 14px; margin-bottom: 16px; }
.agent-result-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-top: 4px solid var(--forest);
  border-radius: 4px;
  padding: 16px;
  box-shadow: 0 2px 8px rgba(80,60,20,0.09);
}
.agent-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.agent-result-name {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  color: var(--forest);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 700;
}
.value-badge {
  font-size: 0.8rem;
  background: var(--forest);
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 20px;
  letter-spacing: 0.2px;
  text-transform: none;
}
.agent-items { display: flex; flex-wrap: wrap; gap: 6px; }
.empty-bundle { color: var(--text-muted); font-style: italic; font-size: 0.85rem; }

/* ── ITEM/GOOD TAGS (results) ─────────────────────────────────────────── */
/* The little coloured pills representing allocated goods. The cat-0…cat-4
   classes below give each category its own colour; templates pick one with
   "cat-{{ index % 5 }}", so items in the same category always match. */
.item-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--sage-light);
  color: #fff;
  border-radius: 2px;
  padding: 3px 9px 3px 5px;
  font-size: 0.83rem;
  font-weight: 500;
  border: none;
}
.item-tag::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  background: rgba(255,255,255,0.65);
  display: inline-block;
}
.tag-val {
  background: rgba(255,255,255,0.25);
  border-radius: 10px;
  padding: 0 7px;
  font-size: 0.76rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  margin-left: 2px;
}
.cat-0 { background: var(--sage-light); color: #fff; }
.cat-1 { background: #c8a060; color: #fff; }
.cat-2 { background: var(--forest-light); color: #fff; }
.cat-3 { background: #b88a55; color: #fff; }
.cat-4 { background: #8077aa; color: #fff; }

/* ── BADGES ───────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  background: var(--forest);
  color: #fff;
  font-family: 'Cinzel', serif;
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  padding: 3px 10px;
  border-radius: 2px;
  text-transform: uppercase;
}
.badge-gold { background: var(--gold); color: #fff; }
.verification-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.badge-success {
  display: inline-block;
  background: var(--forest);
  color: #fff;
  padding: 6px 16px;
  border-radius: 2px;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 700;
}

/* ── RESULT ACTION BUTTONS ─────────────────────────────────────────────── */
.result-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  position: relative;
}
.result-actions::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.4;
}
.result-btn {
  background: transparent;
  border: 1.5px solid var(--gold);
  color: var(--gold-dark);
  padding: 9px 18px;
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none !important;
  text-transform: uppercase;
}
.result-btn:hover { background: var(--gold); color: #fff; text-decoration: none !important; }

/* ── CARDS (general) ──────────────────────────────────────────────────── */
.card {
  background: #fff8f0;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 22px;
}
.card-error { background: rgba(122,32,32,0.08); border: 1px solid #c8a0a0; border-left: 3px solid var(--danger); color: var(--danger); }
.card-error strong { color: var(--danger); }
.card-error p { margin-top: 6px; color: var(--danger); font-size: 0.9rem; }

/* ── MODALS ────────────────────────────────────────────────────────────── */
/* CSS-only dialogs. A `.modal` is hidden (display:none) until its id matches
   the page's URL hash — then `.modal:target` flips it to display:flex. So a
   link like href="#modal-ef1" opens it, and href="#" (the backdrop/✕) closes
   it. No JavaScript involved. */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  padding: 24px 16px;
  overflow-y: auto;
}
/* The one rule that makes the open/close mechanism work. */
.modal:target { display: flex; }
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(42,32,24,0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
}
.modal-content {
  position: relative;
  background: var(--card);
  background-image: repeating-linear-gradient(0deg, transparent, transparent 28px, rgba(180,150,80,0.035) 28px, rgba(180,150,80,0.035) 29px);
  border: 1px solid var(--border);
  border-top: 3px solid var(--forest);
  border-radius: 4px;
  width: 100%;
  max-width: 700px;
  max-height: calc(100vh - 48px);
  margin: auto;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-wide { max-width: 960px; }
.modal-close {
  width: 28px; height: 28px;
  border-radius: 50%;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.85);
  text-decoration: none !important;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
  line-height: 1;
  font-weight: 400;
  margin-left: auto;
  letter-spacing: 0;
  flex-shrink: 0;
}
.modal-close:hover { background: rgba(122,32,32,0.55); border-color: #e08080; color: #fff; }
.modal-title {
  font-family: 'Cinzel', serif;
  font-size: 0.88rem;
  letter-spacing: 2.5px;
  color: #fff;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--forest), var(--sage-dark));
  border-bottom: 1px solid var(--gold-dark);
  padding: 14px 60px 14px 30px;
  margin: 0;
  flex-shrink: 0;
}
.modal-title-error {
  background: linear-gradient(90deg, var(--danger), #5a1818);
}
.modal-subtitle {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-style: italic;
}
/* Everything between modal-title and the end is scrollable */
.modal-content > *:not(.modal-title):not(.modal-close):not(.modal-backdrop):first-of-type,
.modal-content > .modal-subtitle,
.modal-content > .timeline,
.modal-content > .envy-matrix,
.modal-content > .constraints-table,
.modal-content > .log-pre,
.modal-content > .illegal-grid,
.modal-content > .proof-banner,
.modal-content > .ef1-pair-card,
.modal-content > .proof-section-title,
.modal-content > .proof-note,
.modal-content > .examples-list,
.modal-content > .explainer-section,
.modal-content > .citation-block,
.modal-content > .error-detail,
.modal-content > .help-section,
.modal-content > .random-modal-form {
  margin-left: 30px;
  margin-right: 30px;
}
.modal-content > .modal-subtitle { margin-top: 18px; margin-bottom: 12px; }
.modal-content::after { content: ''; display: block; height: 28px; flex-shrink: 0; }
.modal-content > .modal-title {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.modal-title .modal-close,
.modal-title > a.modal-close {
  position: static;
  flex-shrink: 0;
}
.modal-content > *:not(.modal-title):not(.modal-close):not(.modal-backdrop) { flex-shrink: 0; }
.modal-content { overflow-y: auto !important; overflow-x: hidden; }

/* ── TIMELINE ──────────────────────────────────────────────────────────── */
/* The step-by-step view: a gold vertical rule with one item per step. Each
   step type has a coloured dot (.tl-dot-cat, .tl-dot-pick, …) matching the
   step types emitted by run_algorithm_with_steps() in app.py. */
.timeline { border-left: 2px solid var(--gold); padding-left: 22px; margin: 12px 0 0 12px; display: flex; flex-direction: column; gap: 4px; }
.timeline-item { position: relative; padding: 14px 0; border-bottom: 1px solid var(--border); }
.timeline-item:last-child { border-bottom: none; }
.tl-dot {
  position: absolute;
  left: -28px;
  top: 18px;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid var(--card);
}
.tl-dot-cat      { background: var(--forest); box-shadow: 0 0 0 2px var(--forest); }
.tl-dot-pick     { background: var(--sage); box-shadow: 0 0 0 2px var(--sage); }
.tl-dot-envy     { background: var(--danger); box-shadow: 0 0 0 2px var(--danger); }
.tl-dot-cycle    { background: var(--gold); box-shadow: 0 0 0 2px var(--gold); }
.tl-dot-rotation { background: var(--gold); box-shadow: 0 0 0 2px var(--gold); }
.tl-dot-topo     { background: var(--forest-light); box-shadow: 0 0 0 2px var(--forest-light); }
.tl-dot-final    { background: var(--forest); box-shadow: 0 0 0 2px var(--forest); }
.tl-content { padding-left: 4px; }
.tl-heading {
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  color: var(--forest);
  margin-bottom: 6px;
  text-transform: uppercase;
  font-weight: 700;
}
.tl-sub { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; font-style: italic; }
.order-badges { display: flex; align-items: center; gap: 5px; flex-wrap: wrap; font-size: 0.85rem; margin-top: 6px; }
.available-row { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }

/* Step-by-step new details */
.step-section-label {
  font-family: 'Cinzel', serif;
  font-size: 0.62rem;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin: 12px 0 6px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 3px;
  text-transform: uppercase;
}
.pick-summary { font-size: 0.95rem; margin-bottom: 4px; }
.pref-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  align-items: center;
  background: rgba(255,248,240,0.6);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px 12px;
  margin-bottom: 6px;
}
.pref-row .arrow-right { color: var(--gold); font-weight: 700; font-size: 0.8rem; }
.mini-bundles {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px 12px;
}
.mini-bundle-row {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  padding: 3px 0;
}
.mini-bundle-row .badge { min-width: 80px; text-align: center; }
.item-picked { box-shadow: 0 0 0 2px var(--gold); }

/* Already-taken items (greyed out, strikethrough) */
.item-taken {
  background: #e8e2d0 !important;
  color: var(--text-light) !important;
  border-color: #c8bca0 !important;
  opacity: 0.6;
}
.item-taken::before { opacity: 0.3 !important; }
.item-taken s { color: var(--text-light); text-decoration: line-through; }
.item-taken .tag-val { background: rgba(0,0,0,0.05); color: var(--text-light); }
.taken-by {
  font-family: 'Cinzel', serif;
  font-size: 0.65rem;
  letter-spacing: 0.5px;
  color: var(--gold-dark);
  margin-left: 3px;
  font-style: italic;
  opacity: 0.85;
}

/* Cycle SVG with extra spacing (left-aligned, not centered) */
.cycle-svg-wrap {
  display: flex;
  justify-content: flex-start;
  padding: 14px 0 8px;
  margin: 10px 0;
}

/* Linear topological-sort graph (horizontal line of nodes) — matches .envy-graph style */
.topo-graph {
  display: block;
  width: 100%;
  max-width: 620px;
  height: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  margin: 4px 0 10px;
  padding: 4px 0;
}

/* Error modal styles */
.error-detail {
  background: rgba(122,32,32,0.06);
  border: 1px solid #c8a0a0;
  border-left: 4px solid var(--danger);
  border-radius: 3px;
  padding: 14px 18px;
  margin-top: 18px;
  margin-bottom: 18px;
}
.error-detail-label {
  font-family: 'Cinzel', serif;
  font-size: 0.76rem;
  letter-spacing: 1.5px;
  color: var(--danger);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 6px;
}
.error-detail-message {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
  word-break: break-word;
}

/* Topological sort: horizontal line of agents */
.topo-explain {
  font-size: 0.88rem;
  line-height: 1.55;
  background: rgba(184,136,42,0.08);
  border-left: 3px solid var(--gold);
  padding: 10px 14px;
  border-radius: 2px;
  margin-bottom: 12px;
}
.topo-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 14px 16px;
  margin-top: 6px;
}
.topo-node {
  background: var(--forest);
  color: #fff;
  font-family: 'Cinzel', serif;
  font-size: 0.82rem;
  letter-spacing: 1.5px;
  padding: 7px 14px;
  border-radius: 3px;
  font-weight: 600;
}
.topo-arrow {
  color: var(--gold);
  font-size: 1.4rem;
  font-weight: 700;
}

/* Final allocation with proper agent spacing */
.final-bundles {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 16px 18px;
  margin-top: 8px;
}
.final-bundle-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 8px 12px;
  background: var(--card);
  border-radius: 3px;
  border-left: 3px solid var(--forest);
}
.final-bundle-agent {
  font-family: 'Cinzel', serif;
  font-size: 0.95rem;
  letter-spacing: 1.5px;
  color: var(--forest);
  text-transform: uppercase;
  font-weight: 700;
  min-width: 100px;
}
.final-bundle-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Timeline spacing — give every item more breathing room */
.timeline-item { padding: 18px 0; }

/* SVG envy graph */
.svg-row { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; margin-top: 10px; }
.envy-graph { width: 220px; height: 220px; flex-shrink: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 3px; }
.envy-mini-table { border-collapse: collapse; font-size: 0.8rem; }
.envy-mini-table th, .envy-mini-table td { border: 1px solid var(--border); padding: 5px 8px; text-align: center; }
.envy-mini-table th { background: var(--sage-dark); color: #fff; font-family: 'Cinzel', serif; font-size: 0.62rem; letter-spacing: 1px; text-transform: uppercase; }
/* own-cell = an agent's value of its own bundle (green diagonal);
   envy-cell = a value higher than its own, i.e. envy (red). */
.own-cell { background: rgba(45,90,61,0.1); color: var(--success); }
.envy-cell { background: rgba(122,32,32,0.08); color: var(--danger); }

/* Rotation */
.rotation-grid { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; margin-top: 10px; }
.rotation-col { display: flex; flex-direction: column; gap: 7px; }
.rotation-label { font-family: 'Cinzel', serif; font-size: 0.65rem; letter-spacing: 2px; color: var(--text-muted); text-transform: uppercase; font-weight: 700; }
.rotation-arrow { font-size: 2rem; color: var(--gold); }
.bundle-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 0.86rem; }
.arrow-right { color: var(--gold); font-weight: 700; }

/* ── EF1 / Envy matrix ─────────────────────────────────────────────────── */
.proof-section-title {
  font-family: 'Cinzel', serif;
  font-size: 0.78rem;
  letter-spacing: 2px;
  color: var(--forest);
  border-bottom: 1px solid var(--gold-light);
  padding-bottom: 6px;
  margin-bottom: 12px;
  text-transform: uppercase;
  font-weight: 700;
}
.proof-note { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; font-style: italic; }
.envy-matrix { border-collapse: collapse; font-size: 0.88rem; width: 100%; margin-bottom: 8px; }
.envy-matrix th, .envy-matrix td { border: 1px solid var(--border); padding: 8px 12px; text-align: center; }
.envy-matrix th { background: var(--sage-dark); color: #fff; font-family: 'Cinzel', serif; font-size: 0.62rem; letter-spacing: 1px; text-transform: uppercase; }
.ef1-pair-card {
  background: #fff8f0;
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 3px;
  padding: 12px 16px;
  margin-bottom: 10px;
  font-size: 0.88rem;
}
.ef1-pair-header { font-family: 'Cinzel', serif; font-size: 0.72rem; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; color: var(--forest); }
.ef1-ok { color: var(--success); font-weight: 700; }
.proof-banner {
  background: linear-gradient(90deg, var(--forest), var(--sage-dark));
  color: #fff;
  border-radius: 3px;
  padding: 12px 18px;
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  text-align: center;
  margin-top: 18px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
  box-shadow: 0 3px 10px rgba(45,90,61,0.3);
}

/* ── Constraints table ────────────────────────────────────────────────── */
.constraints-table { border-collapse: collapse; font-size: 0.88rem; width: 100%; margin-bottom: 12px; }
.constraints-table th, .constraints-table td { border: 1px solid var(--border); padding: 8px 12px; text-align: center; }
.constraints-table th { background: var(--sage-dark); color: #fff; font-family: 'Cinzel', serif; font-size: 0.62rem; letter-spacing: 1.5px; text-transform: uppercase; }
.constraint-ok { background: rgba(45,90,61,0.08); color: var(--success); font-weight: 600; }
.constraint-fail { background: rgba(122,32,32,0.08); color: var(--danger); font-weight: 600; }

/* ── Log ──────────────────────────────────────────────────────────────── */
.log-pre {
  background: #1a1a1a;
  color: #c8c8c8;
  border-radius: 3px;
  padding: 16px;
  font-size: 0.78rem;
  font-family: 'Courier New', Courier, monospace;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 60vh;
  overflow-y: auto;
  line-height: 1.6;
  border: 1px solid var(--border);
}
.log-info    { color: #9fbf9f; }
.log-debug   { color: #777; }
.log-warning { color: var(--gold-light); }
.log-error   { color: #d88080; }

/* ── Illegal inputs modal ──────────────────────────────────────────────── */
.illegal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 8px; }
.illegal-card { background: rgba(122,32,32,0.05); border: 1px solid #c8a0a0; border-left: 3px solid var(--danger); border-radius: 3px; padding: 12px 14px; font-size: 0.86rem; color: var(--text); }
.illegal-label { font-family: 'Cinzel', serif; font-size: 0.7rem; letter-spacing: 1.5px; margin-bottom: 6px; text-transform: uppercase; color: var(--danger); font-weight: 700; }
.illegal-card p { margin-bottom: 8px; line-height: 1.4; }
.code-snippet { display: block; background: var(--surface); border: 1px solid var(--border); border-radius: 2px; padding: 5px 8px; font-family: 'Courier New', monospace; font-size: 0.78rem; color: var(--text-muted); }

/* ── Algorithm pseudo-code blocks ─────────────────────────────────────── */
.algo-pseudo {
  background: #f7f0e0;
  border: 1px solid var(--border);
  border-left: 3px solid var(--forest);
  border-radius: 3px;
  padding: 12px 16px;
  margin: 10px 0;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
  overflow-x: auto;
}
.algo-pseudo pre { margin: 0; line-height: 1.6; color: var(--text); white-space: pre; }
.algo-pseudo pre strong { color: var(--forest); font-weight: 700; }
.algo-tag {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.3px;
  text-transform: none;
}
.plain-words {
  font-size: 0.9rem;
  line-height: 1.55;
  margin-top: 6px;
  color: var(--text);
}
.plain-words strong { color: var(--forest); }

/* ── Random Fill modal form ───────────────────────────────────────────── */
.modal-small .modal-content,
#random-modal .modal-content { max-width: 500px; }
.random-modal-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0;
}
.form-field { display: flex; flex-direction: column; gap: 4px; }
.form-label {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: var(--forest);
  text-transform: uppercase;
}
.form-field input[type="number"] {
  background: #fff8f0;
  border: 1px solid var(--border);
  padding: 9px 12px;
  font-size: 0.95rem;
  border-radius: 3px;
  font-family: 'Inter', sans-serif;
}
.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}
.form-submit {
  margin-top: 8px;
  width: 100%;
  padding: 12px 22px !important;
  font-size: 0.85rem !important;
}

/* ── Help modal sections ──────────────────────────────────────────────── */
.help-section { margin-bottom: 18px; }
.help-heading {
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: var(--forest);
  text-transform: uppercase;
  border-bottom: 1px solid var(--gold-light);
  padding-bottom: 5px;
  margin-bottom: 10px;
}
.help-list { padding-left: 22px; display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; line-height: 1.55; }
.help-list code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 2px;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
}

/* ── About page ────────────────────────────────────────────────────────── */
.about-page { display: flex; justify-content: center; padding: 40px 24px; }
.about-card {
  max-width: 640px;
  width: 100%;
  background: var(--card);
  background-image: repeating-linear-gradient(0deg, transparent, transparent 28px, rgba(180,150,80,0.035) 28px, rgba(180,150,80,0.035) 29px);
  border: 1px solid var(--border);
  border-top: 4px solid var(--forest);
  border-radius: 4px;
  padding: 36px 40px;
  box-shadow: 0 2px 12px var(--card-shadow);
}
.about-section { margin-bottom: 22px; padding-bottom: 22px; border-bottom: 1px solid var(--gold-light); }
.about-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.about-heading {
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: var(--forest);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
}
.about-heading::before { content: '◆'; color: var(--gold); font-size: 0.6rem; }

/* ── Misc ──────────────────────────────────────────────────────────────── */
.cat-pill { display: inline-block; padding: 3px 10px; margin: 2px 4px; font-size: 0.82rem; background: var(--surface); border: 1px solid var(--border); border-radius: 2px; }

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .illegal-grid { grid-template-columns: 1fr; }
  .svg-row { flex-direction: column; }
  .gallery-nav { position: static; transform: none; justify-content: center; padding-top: 8px; }
}