/* =================================================================
   Hermes Atlas — Home Page Styles (v2 · Industrial Brutalist)
   Loaded only by index.html. Covers: masthead, hero strip, stats row,
   featured block, category sections, repo rows, curated lists strip,
   report banner, chat widget, tooltip, footnote.
   Source of truth: DESIGN.md §5 and mock-a-brutalist.html
   ================================================================= */

/* ─── Theme toggle (text-based, inline in masthead per DESIGN.md §13) ── */
#theme-toggle {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  padding: 2px 0;
  white-space: nowrap;
}
#theme-toggle .tt-active { color: var(--ink); }
#theme-toggle .tt-sep { color: var(--rule-strong); margin: 0 6px; }
#theme-toggle:hover { color: var(--ink); }

/* ─── Masthead ─────────────────────────────────────────────── */
.masthead {
  border-bottom: 1px solid var(--rule-strong);
  padding: 22px 40px;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 48px;
  align-items: baseline;
}
.masthead .mast-toggle { justify-self: end; }
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  color: var(--ink);
}
.brand::after {
  content: '.';
  color: var(--accent);
}
.mast-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-mute);
  display: flex;
  gap: 24px;
  letter-spacing: 0.02em;
  flex-wrap: wrap;
}
.mast-meta span::before {
  content: '▸ ';
  color: var(--rule-strong);
}
.mast-nav {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: flex;
  gap: 20px;
}
.mast-nav a {
  color: var(--ink-dim);
  position: relative;
  padding-bottom: 2px;
  transition: color 0.15s;
}
.mast-nav a:hover { color: var(--accent); }
.mast-nav a.active {
  color: var(--ink);
  border-bottom: 1px solid var(--accent);
}

/* ─── Hero strip ───────────────────────────────────────────── */
.hero-strip {
  padding: 64px 40px 48px;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: end;
}
.hero-title {
  font-size: clamp(56px, 8vw, 112px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.95;
  text-wrap: balance;
  color: var(--ink);
}
.hero-title em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.6;
  max-width: 42ch;
  text-wrap: pretty;
}
.hero-sub strong {
  color: var(--ink);
  font-weight: 500;
}

/* ─── Stats row (5-col, 1px internal gaps) ─────────────────── */
.stats-row {
  border-bottom: 1px solid var(--rule-strong);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--rule);
}
.stat {
  background: var(--bg);
  padding: 18px 24px;
  font-family: var(--font-mono);
}
.stat .n {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  display: block;
}
.stat .n.accent { color: var(--accent); }
.stat .l {
  font-size: 10px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* ─── Report banner ────────────────────────────────────────── */
.report-banner {
  border-bottom: 1px solid var(--rule);
  padding: 14px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--bg-elev);
}
.report-banner.hidden { display: none; }
.report-banner-content {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex: 1;
  min-width: 0;
}
.report-banner-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--bg);
  background: var(--accent);
  padding: 3px 8px;
  flex-shrink: 0;
}
.report-banner-text {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
  line-height: 1.55;
}
.report-banner-text a {
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid var(--accent-dim);
  transition: border-color 0.15s;
}
.report-banner-text a:hover { border-bottom-color: var(--accent); }
.report-banner-close {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-mute);
  padding: 4px 8px;
  flex-shrink: 0;
}
.report-banner-close:hover { color: var(--ink); }

/* ─── Featured block (hero repo) ───────────────────────────── */
.featured {
  padding: 48px 40px;
  border-bottom: 1px solid var(--rule-strong);
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 40px;
  align-items: center;
}
.featured-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
}
.featured-name {
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 16px;
  color: var(--ink);
}
.featured-name .org {
  color: var(--ink-mute);
  font-weight: 400;
}
.featured-name .slash {
  color: var(--rule-strong);
  margin: 0 4px;
}
.featured-desc {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.7;
  max-width: 56ch;
}
.featured-nums {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule-strong);
}
.featured-nums > div {
  background: var(--bg-elev);
  padding: 20px 16px;
  font-family: var(--font-mono);
}
.featured-nums .big {
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1;
  display: block;
}
.featured-nums .big.star { color: var(--accent); }
.featured-nums .sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-mute);
  margin-top: 2px;
  letter-spacing: 0.02em;
}
.featured-nums .lbl {
  font-size: 9px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-top: 8px;
}

/* ─── Featured · this week (rotating community pick) ──────── */
.featured-week {
  padding: 40px 40px 44px;
  border-bottom: 1px solid var(--rule-strong);
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-elev);
}
.featured-week-meta {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.featured-week-meta .featured-label {
  margin-bottom: 0;
}
.featured-week-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: lowercase;
  letter-spacing: 0.04em;
}
.featured-week-name {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--ink);
  text-decoration: none;
}
.featured-week-name:hover {
  color: var(--accent);
}
.featured-week-name .org {
  color: var(--ink-mute);
  font-weight: 400;
}
.featured-week-name .slash {
  color: var(--rule-strong);
  margin: 0 4px;
}
.featured-week-desc {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.7;
  max-width: 70ch;
}
.featured-week-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.featured-week-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  padding: 4px 10px;
  border: 1px solid var(--rule-strong);
}
.featured-week-tag--star {
  color: var(--accent);
  border-color: var(--accent);
}
.featured-week-link {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-left: auto;
}
@media (max-width: 720px) {
  .featured-week { padding: 28px 20px 32px; }
  .featured-week-name { font-size: 24px; }
  .featured-week-link { margin-left: 0; }
}

/* ─── Controls (search + sort) ─────────────────────────────── */
.controls {
  padding: 20px 40px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.search-wrap {
  flex: 1;
  min-width: 260px;
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 6px;
  transition: border-color 0.15s;
}
.search-wrap:focus-within { border-bottom-color: var(--accent); }
#search-input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  padding: 2px 0;
}
#search-input::placeholder { color: var(--ink-mute); }
.sort-btns {
  display: flex;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.sort-btns .lbl {
  color: var(--ink-mute);
  padding: 6px 10px 6px 0;
}
.sort-btn {
  color: var(--ink-mute);
  padding: 6px 10px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.sort-btn:hover { color: var(--ink); }
.sort-btn.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
#result-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
}

/* ─── Category section (220px meta | 1fr list) ─────────────── */
.cat {
  padding: 40px 40px 48px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  border-bottom: 1px solid var(--rule);
}
.cat:last-of-type { border-bottom-color: var(--rule-strong); }
.cat-meta {
  position: sticky;
  top: 40px;
  align-self: start;
}
.cat-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.cat-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 10px;
  color: var(--ink);
  text-wrap: balance;
}
.cat-desc {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  line-height: 1.6;
}
.cat-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--rule-strong);
}
.cat-count-n { font-variant-numeric: tabular-nums; }

/* ─── Repo row ─────────────────────────────────────────────── */
.cat-list {
  display: flex;
  flex-direction: column;
}
.repo-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
  transition: padding 0.12s ease-out, border-bottom-color 0.12s ease-out;
  color: var(--ink);
}
.repo-row:last-child { border-bottom: none; }
.repo-row:hover {
  padding-left: 12px;
  border-bottom-color: var(--rule-strong);
}
.repo-stars {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.repo-body { min-width: 0; }
.repo-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.repo-name .org {
  color: var(--ink-mute);
  font-weight: 400;
}
.repo-desc {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-dim);
  line-height: 1.55;
  margin-top: 4px;
}
.repo-delta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--positive);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.repo-delta.negative { color: var(--negative); }
.repo-delta.zero { color: var(--ink-mute); }
.repo-delta .hot {
  color: var(--accent);
  margin-left: 6px;
}
.repo-flag {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--bg);
  background: var(--accent);
  padding: 2px 6px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-left: 8px;
  font-weight: 600;
  display: inline-block;
  vertical-align: 2px;
}

/* ─── Curated Lists strip ──────────────────────────────────── */
.curated-lists {
  padding: 48px 40px 48px;
  border-bottom: 1px solid var(--rule-strong);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
}
.curated-lists .cat-meta { position: static; }
.lists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule-strong);
}
.list-card {
  background: var(--bg);
  padding: 20px 20px 22px;
  transition: background 0.15s;
}
.list-card:hover { background: var(--bg-elev); }
.lc-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 6px;
}
.lc-title::before {
  content: '→ ';
  color: var(--accent);
}
.lc-desc {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-dim);
  line-height: 1.55;
}

/* ─── Footnote ─────────────────────────────────────────────── */
.footnote {
  padding: 32px 40px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-mute);
  display: flex;
  justify-content: space-between;
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  gap: 12px;
}
.footnote .fn-left::before {
  content: '※';
  color: var(--accent);
  margin-right: 8px;
}
.footnote a {
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule-strong);
}
.footnote a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ─── Tooltip ──────────────────────────────────────────────── */
.tooltip {
  display: none;
  position: fixed;
  background: var(--bg-elev);
  border: 1px solid var(--rule-strong);
  padding: 12px 14px;
  max-width: 340px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--ink-dim);
  z-index: 1000;
  pointer-events: none;
}
.tt-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13px;
  color: var(--ink);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.tt-desc {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-dim);
  line-height: 1.55;
}
.tt-link {
  color: var(--accent);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-top: 8px;
}

/* ─── Chat widget ──────────────────────────────────────────── */
#chat-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--bg);
  background: var(--accent);
  padding: 12px 18px;
  transition: background 0.15s;
}
#chat-btn:hover { background: var(--accent-dim); }

/* Chat-panel-scoped tokens so the whole widget re-themes in one place.
   Light (default): white panel on paper background for contrast.
   Dark: amber panel on black background for contrast + dark ink
   flipped inside for legibility. */
#chat-panel {
  --chat-bg: #ffffff;
  --chat-ink: var(--ink);
  --chat-ink-dim: var(--ink-dim);
  --chat-ink-mute: var(--ink-mute);
  --chat-rule: var(--rule-strong);
  --chat-rule-soft: var(--rule);
  --chat-accent: var(--accent);
  --chat-accent-bg: var(--bg-offset);
  --chat-border: var(--ink);

  position: fixed;
  right: 24px;
  bottom: 68px;
  width: min(420px, calc(100vw - 48px));
  max-height: min(640px, calc(100vh - 120px));
  background: var(--chat-bg);
  color: var(--chat-ink);
  border: 2px solid var(--chat-border);
  z-index: 900;
  display: none;
  flex-direction: column;
}
:root[data-theme="dark"] #chat-panel {
  /* Same white-panel look as light mode (stands out against black page bg).
     Ink + rules kept dark so text is legible on white, regardless of page theme. */
  --chat-bg: #ffffff;
  --chat-ink: #1a1814;
  --chat-ink-dim: #3d3830;
  --chat-ink-mute: #8a8378;
  --chat-rule: #b8b2a0;
  --chat-rule-soft: #d9d3c2;
  --chat-accent: #a36f28;           /* amber ink for links/send on white */
  --chat-accent-bg: #f4f0e4;        /* subtle paper tint for user bubbles + code */
  --chat-border: #1a1814;
}
#chat-panel.open { display: flex; }

.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--chat-rule);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.chat-header h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--chat-ink);
}
.chat-header span {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--chat-ink-mute);
  display: block;
  margin-top: 4px;
}
.chat-header-actions { display: flex; gap: 4px; }
.chat-header-actions button {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--chat-ink-dim);
  padding: 4px 8px;
}
.chat-header-actions button:hover { color: var(--chat-ink); }

#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chat-msg {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  padding: 10px 12px;
  border-left: 2px solid var(--chat-rule);
  color: var(--chat-ink);
}
.chat-msg.chat-user {
  border-left-color: var(--chat-accent);
  color: var(--chat-ink);
  background: var(--chat-accent-bg);
}
.chat-msg.chat-assistant {
  color: var(--chat-ink-dim);
}
.chat-msg.loading { color: var(--chat-ink-mute); font-style: italic; }
.chat-msg.error {
  border-left-color: var(--negative);
  color: var(--chat-ink-dim);
}
.chat-msg code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: var(--chat-accent-bg);
  padding: 1px 4px;
  border: 1px solid var(--chat-rule-soft);
}
.chat-msg a {
  color: var(--chat-accent);
  border-bottom: 1px solid var(--chat-accent);
}
.chat-msg .citation {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--chat-ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.chat-model-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--chat-ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-top: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--chat-rule-soft);
}
.chat-input-wrap {
  display: flex;
  gap: 0;
  padding: 0 20px;
  border-top: 1px solid var(--chat-rule);
}
#chat-input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--chat-ink);
  background: transparent;
  padding: 14px 16px;
  border-right: 1px solid var(--chat-rule-soft);
}
#chat-input::placeholder { color: var(--chat-ink-mute); }
/* Inset the focus ring so it doesn't overlap the 2px panel border. */
#chat-input:focus-visible {
  outline: 2px solid var(--chat-accent);
  outline-offset: -2px;
}
#chat-send {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--chat-accent);
  padding: 0 18px;
  transition: color 0.15s, background 0.15s;
}
#chat-send:hover { color: var(--chat-bg); background: var(--chat-accent); }
#chat-send:focus-visible {
  outline: 2px solid var(--chat-accent);
  outline-offset: -2px;
}
#chat-send:disabled { opacity: 0.4; cursor: not-allowed; }

/* ─── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .masthead {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 18px 20px;
  }
  .masthead .mast-toggle { justify-self: start; }
  .mast-meta, .mast-nav { font-size: 10px; }
  .mast-meta { gap: 14px; }
  .mast-nav { gap: 14px; flex-wrap: wrap; }
  .hero-strip {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 20px;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat { padding: 14px 16px; }
  .featured {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 20px;
  }
  .featured-name { font-size: 32px; }
  .featured-nums { grid-template-columns: repeat(2, 1fr); }
  .controls { padding: 16px 20px; gap: 14px; }
  .report-banner { padding: 12px 20px; flex-wrap: wrap; }
  .cat {
    grid-template-columns: 1fr;
    padding: 32px 20px;
    gap: 20px;
  }
  .cat-meta { position: static; }
  .curated-lists {
    grid-template-columns: 1fr;
    padding: 32px 20px;
    gap: 20px;
  }
  .repo-row {
    grid-template-columns: 60px 1fr;
    gap: 16px;
  }
  .repo-row .repo-delta {
    grid-column: 2;
    grid-row: 2;
    margin-top: 4px;
  }
  .footnote { padding: 24px 20px; }
  #chat-btn { right: 16px; bottom: 16px; }
  #chat-panel { right: 16px; bottom: 60px; width: calc(100vw - 32px); }
}