/* =============================================================
   PULSE THEME VARIANTS
   Three distinct reading experiences:
   1. Night Desk (default) — in style.css
   2. Morning Post — warm parchment editorial
   3. Clean Signal — minimal, modern, maximum clarity
   ============================================================= */

/* ===== THEME SWITCHER ===== */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  padding: 2px;
}

.theme-btn {
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 4px;
  border: none;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  line-height: 1.4;
}

.theme-btn:hover {
  color: var(--text-muted);
}

.theme-btn.active {
  background: var(--bg-card);
  color: var(--text-strong);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}


/* =============================================================
   THEME 2: MORNING POST
   Warm parchment editorial. Serif headlines, generous whitespace,
   burnt sienna accent. The morning coffee read.
   ============================================================= */

[data-theme="morning-post"] {
  --bg: #FAF8F5;
  --bg-raised: #F5F2EF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FDFCFA;
  --border: #E8E3DD;
  --border-subtle: #F0EBE5;
  --text: #3D3833;
  --text-strong: #1A1715;
  --text-muted: #8A8279;
  --text-faint: #B5AFA7;
  --accent: #C4633A;
  --accent-dim: rgba(196, 99, 58, 0.07);

  --cat-release: #4A7AB5;
  --cat-breaking: #C44B4B;
  --cat-tip: #548A5F;
  --cat-tutorial: #B8863A;
  --cat-discussion: #8A8279;
  --cat-opinion: #8B6BA5;

  --src-reddit: #D4653A;
  --src-twitter: #5A8EC4;
  --src-youtube: #C45050;
  --src-hackernews: #CC8020;
  --src-tiktok: #3AACAA;
  --src-github: #548A5F;
  --src-blog: #B8863A;

  --font-headline: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* -- Header -- */
[data-theme="morning-post"] .header {
  background: rgba(250, 248, 245, 0.88);
  border-bottom: 1px solid var(--border);
}

[data-theme="morning-post"] .header-title {
  color: var(--text-strong);
}

/* -- Theme switcher in light mode -- */
[data-theme="morning-post"] .theme-switcher {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="morning-post"] .theme-btn.active {
  background: var(--bg-card);
  color: var(--text-strong);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* -- Filter active state -- */
[data-theme="morning-post"] .filter-btn:hover {
  color: var(--text-strong);
  background: rgba(0, 0, 0, 0.025);
}

/* -- Sort select arrow for light bg -- */
[data-theme="morning-post"] .sort-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23B5AFA7' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

/* -- Cards -- */
[data-theme="morning-post"] .card:hover {
  border-color: var(--border);
}

[data-theme="morning-post"] .card:hover .card-headline {
  color: var(--accent);
}

/* -- Category badges -- */
[data-theme="morning-post"] .card-category.release {
  background: rgba(74, 122, 181, 0.09);
  color: var(--cat-release);
}
[data-theme="morning-post"] .card-category.breaking {
  background: rgba(196, 75, 75, 0.09);
  color: var(--cat-breaking);
}
[data-theme="morning-post"] .card-category.tip {
  background: rgba(84, 138, 95, 0.09);
  color: var(--cat-tip);
}
[data-theme="morning-post"] .card-category.tutorial {
  background: rgba(184, 134, 58, 0.09);
  color: var(--cat-tutorial);
}
[data-theme="morning-post"] .card-category.discussion {
  background: rgba(138, 130, 121, 0.08);
  color: var(--cat-discussion);
}
[data-theme="morning-post"] .card-category.opinion {
  background: rgba(139, 107, 165, 0.09);
  color: var(--cat-opinion);
}

/* -- Bullets -- */
[data-theme="morning-post"] .card[data-category="release"]:hover .card-bullets li  { border-left-color: rgba(74, 122, 181, 0.3); }
[data-theme="morning-post"] .card[data-category="breaking"]:hover .card-bullets li { border-left-color: rgba(196, 75, 75, 0.3); }
[data-theme="morning-post"] .card[data-category="tip"]:hover .card-bullets li      { border-left-color: rgba(84, 138, 95, 0.3); }
[data-theme="morning-post"] .card[data-category="tutorial"]:hover .card-bullets li { border-left-color: rgba(184, 134, 58, 0.3); }
[data-theme="morning-post"] .card[data-category="discussion"]:hover .card-bullets li { border-left-color: rgba(138, 130, 121, 0.2); }
[data-theme="morning-post"] .card[data-category="opinion"]:hover .card-bullets li  { border-left-color: rgba(139, 107, 165, 0.3); }

/* -- Score -- */
[data-theme="morning-post"] .card-score {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-faint);
}
[data-theme="morning-post"] .card:hover .card-score {
  color: var(--text-muted);
}
[data-theme="morning-post"] .card-score.hot {
  background: rgba(196, 75, 75, 0.08);
  color: var(--cat-breaking);
}
[data-theme="morning-post"] .card-score.rising {
  background: rgba(184, 134, 58, 0.08);
  color: var(--cat-tutorial);
}

/* -- Source pills -- */
[data-theme="morning-post"] .source-pill.reddit {
  color: var(--src-reddit);
  border-color: rgba(212, 101, 58, 0.15);
  background: rgba(212, 101, 58, 0.04);
}
[data-theme="morning-post"] .source-pill.twitter {
  color: var(--src-twitter);
  border-color: rgba(90, 142, 196, 0.15);
  background: rgba(90, 142, 196, 0.04);
}
[data-theme="morning-post"] .source-pill.youtube {
  color: var(--src-youtube);
  border-color: rgba(196, 80, 80, 0.15);
  background: rgba(196, 80, 80, 0.04);
}
[data-theme="morning-post"] .source-pill.hackernews {
  color: var(--src-hackernews);
  border-color: rgba(204, 128, 32, 0.15);
  background: rgba(204, 128, 32, 0.04);
}
[data-theme="morning-post"] .source-pill.tiktok {
  color: var(--src-tiktok);
  border-color: rgba(58, 172, 170, 0.15);
  background: rgba(58, 172, 170, 0.04);
}
[data-theme="morning-post"] .source-pill.github-releases,
[data-theme="morning-post"] .source-pill.github-changelog {
  color: var(--src-github);
  border-color: rgba(84, 138, 95, 0.15);
  background: rgba(84, 138, 95, 0.04);
}
[data-theme="morning-post"] .source-pill.anthropic-blog {
  color: var(--src-blog);
  border-color: rgba(184, 134, 58, 0.15);
  background: rgba(184, 134, 58, 0.04);
}

/* -- Detail panel -- */
[data-theme="morning-post"] .detail-panel {
  background: var(--bg-card);
  border-left: 1px solid var(--border);
}

[data-theme="morning-post"] .detail-close:hover {
  background: rgba(0, 0, 0, 0.03);
}

[data-theme="morning-post"] .detail-content .detail-source-link {
  color: var(--accent);
}

[data-theme="morning-post"] .detail-content .detail-source-link:hover {
  color: #a04e28;
}

/* -- Scrollbar -- */
[data-theme="morning-post"] ::-webkit-scrollbar-thumb { background: var(--border); }
[data-theme="morning-post"] ::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }


/* =============================================================
   THEME 3: CLEAN SIGNAL
   Pure utility. Inter everywhere. Tight spacing, maximum
   information density, clean blue accent for actionable items.
   Like a well-designed monitoring tool — no decoration,
   every pixel earns its place.
   ============================================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

[data-theme="clean-signal"] {
  --bg: #F4F4F2;
  --bg-raised: #ECEAE8;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FCFCFB;
  --border: #DEDBD7;
  --border-subtle: #ECEAE7;
  --text: #2D2D2D;
  --text-strong: #111111;
  --text-muted: #6E6E6E;
  --text-faint: #A0A0A0;
  --accent: #2563EB;
  --accent-dim: rgba(37, 99, 235, 0.05);

  --cat-release: #2563EB;
  --cat-breaking: #DC2626;
  --cat-tip: #16A34A;
  --cat-tutorial: #EA580C;
  --cat-discussion: #6E6E6E;
  --cat-opinion: #9333EA;

  --src-reddit: #EA580C;
  --src-twitter: #2563EB;
  --src-youtube: #DC2626;
  --src-hackernews: #EA580C;
  --src-tiktok: #0D9488;
  --src-github: #16A34A;
  --src-blog: #EA580C;

  --font-headline: 'Inter', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --radius: 8px;
  --radius-sm: 6px;
  --feed-max: 780px;
}

/* -- Theme switcher in light mode -- */
[data-theme="clean-signal"] .theme-switcher {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="clean-signal"] .theme-btn.active {
  background: var(--bg-card);
  color: var(--text-strong);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* -- Header -- */
[data-theme="clean-signal"] .header {
  background: rgba(244, 244, 242, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  height: 48px;
  padding: 0 24px;
}

[data-theme="clean-signal"] .header-title {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.03em;
  color: var(--text-strong);
}

[data-theme="clean-signal"] .header-tagline {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0;
}

[data-theme="clean-signal"] .last-updated {
  font-size: 0.68rem;
  color: var(--text-faint);
}

[data-theme="clean-signal"] .refresh-btn {
  width: 28px;
  height: 28px;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
}

/* -- Filter active -- */
[data-theme="clean-signal"] .filter-btn:hover {
  color: var(--text-strong);
  background: rgba(0, 0, 0, 0.03);
}

/* -- Sort select arrow for light bg -- */
[data-theme="clean-signal"] .sort-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23A0A0A0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

/* -- Sidebar: Tight, functional -- */
[data-theme="clean-signal"] .sidebar {
  width: 170px;
  min-width: 170px;
  padding: 20px 14px;
  gap: 24px;
  top: 48px;
  height: calc(100vh - 48px);
}

[data-theme="clean-signal"] .sidebar-heading {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin-bottom: 6px;
}

[data-theme="clean-signal"] .filter-btn {
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 450;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

[data-theme="clean-signal"] .filter-btn.active {
  color: var(--accent);
  background: var(--accent-dim);
  font-weight: 550;
}

[data-theme="clean-signal"] .sort-select {
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
}

/* -- Feed: Tight, more cards visible -- */
[data-theme="clean-signal"] .feed {
  padding: 16px 28px;
  gap: 8px;
}

/* -- Cards: Compact, no top border accent, just clean surface -- */
[data-theme="clean-signal"] .card {
  border: 1px solid var(--border-subtle);
  border-top: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 14px 18px;
  position: relative;
}

[data-theme="clean-signal"] .card:hover {
  border-color: var(--border);
  border-top-color: var(--border);
}

/* Category indicator — small colored dot before category text */
[data-theme="clean-signal"] .card-category {
  font-family: 'Inter', sans-serif;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  display: flex;
  align-items: center;
  gap: 5px;
}

[data-theme="clean-signal"] .card-category::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
}

[data-theme="clean-signal"] .card-category.release::before   { background: var(--cat-release); }
[data-theme="clean-signal"] .card-category.breaking::before   { background: var(--cat-breaking); }
[data-theme="clean-signal"] .card-category.tip::before        { background: var(--cat-tip); }
[data-theme="clean-signal"] .card-category.tutorial::before   { background: var(--cat-tutorial); }
[data-theme="clean-signal"] .card-category.discussion::before { background: var(--cat-discussion); }
[data-theme="clean-signal"] .card-category.opinion::before    { background: var(--cat-opinion); }

[data-theme="clean-signal"] .card-category.release   { background: rgba(37, 99, 235, 0.06); color: var(--cat-release); }
[data-theme="clean-signal"] .card-category.breaking   { background: rgba(220, 38, 38, 0.06); color: var(--cat-breaking); }
[data-theme="clean-signal"] .card-category.tip        { background: rgba(22, 163, 74, 0.06); color: var(--cat-tip); }
[data-theme="clean-signal"] .card-category.tutorial   { background: rgba(234, 88, 12, 0.06); color: var(--cat-tutorial); }
[data-theme="clean-signal"] .card-category.discussion { background: rgba(110, 110, 110, 0.06); color: var(--cat-discussion); }
[data-theme="clean-signal"] .card-category.opinion    { background: rgba(147, 51, 234, 0.06); color: var(--cat-opinion); }

/* Headline — Inter, tighter */
[data-theme="clean-signal"] .card-headline {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-strong);
}

[data-theme="clean-signal"] .card:hover .card-headline {
  color: var(--accent);
}

[data-theme="clean-signal"] .card-header {
  margin-bottom: 6px;
}

/* Bullets — minimal, flush left, no decorative border */
[data-theme="clean-signal"] .card-bullets {
  margin: 0 0 10px 0;
  gap: 0;
}

[data-theme="clean-signal"] .card-bullets li {
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--text-muted);
  padding: 6px 0 6px 12px;
  border-left: 2px solid var(--border-subtle);
  border-radius: 0;
  background: transparent;
}

[data-theme="clean-signal"] .card-bullets li + li {
  border-top: none;
}

[data-theme="clean-signal"] .card:hover .card-bullets li {
  border-left-color: var(--border);
  color: var(--text);
}

/* Score — tiny, clean */
[data-theme="clean-signal"] .card-score {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.65rem;
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-faint);
}

[data-theme="clean-signal"] .card-score.hot {
  background: rgba(220, 38, 38, 0.06);
  color: var(--cat-breaking);
}

[data-theme="clean-signal"] .card-score.rising {
  background: rgba(234, 88, 12, 0.06);
  color: var(--cat-tutorial);
}

[data-theme="clean-signal"] .card-time {
  font-family: 'Inter', sans-serif;
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--text-faint);
}

/* Source pills — very understated */
[data-theme="clean-signal"] .source-pill {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.65rem;
  border-radius: var(--radius-sm);
  padding: 1px 6px;
}

[data-theme="clean-signal"] .source-pill.reddit {
  color: var(--src-reddit);
  border-color: rgba(234, 88, 12, 0.12);
  background: rgba(234, 88, 12, 0.03);
}
[data-theme="clean-signal"] .source-pill.twitter {
  color: var(--src-twitter);
  border-color: rgba(37, 99, 235, 0.12);
  background: rgba(37, 99, 235, 0.03);
}
[data-theme="clean-signal"] .source-pill.youtube {
  color: var(--src-youtube);
  border-color: rgba(220, 38, 38, 0.12);
  background: rgba(220, 38, 38, 0.03);
}
[data-theme="clean-signal"] .source-pill.hackernews {
  color: var(--src-hackernews);
  border-color: rgba(234, 88, 12, 0.12);
  background: rgba(234, 88, 12, 0.03);
}
[data-theme="clean-signal"] .source-pill.tiktok {
  color: var(--src-tiktok);
  border-color: rgba(13, 148, 136, 0.12);
  background: rgba(13, 148, 136, 0.03);
}
[data-theme="clean-signal"] .source-pill.github-releases,
[data-theme="clean-signal"] .source-pill.github-changelog {
  color: var(--src-github);
  border-color: rgba(22, 163, 74, 0.12);
  background: rgba(22, 163, 74, 0.03);
}
[data-theme="clean-signal"] .source-pill.anthropic-blog {
  color: var(--src-blog);
  border-color: rgba(234, 88, 12, 0.12);
  background: rgba(234, 88, 12, 0.03);
}

/* -- Detail panel -- */
[data-theme="clean-signal"] .detail-panel {
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  padding: 24px 22px;
  top: 48px;
  height: calc(100vh - 48px);
}

[data-theme="clean-signal"] .detail-close:hover {
  background: rgba(0, 0, 0, 0.03);
}

[data-theme="clean-signal"] .detail-content h2,
[data-theme="clean-signal"] .detail-headline {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

[data-theme="clean-signal"] .detail-content .detail-summary {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  line-height: 1.65;
}

[data-theme="clean-signal"] .detail-content .detail-source-link {
  color: var(--accent);
}

[data-theme="clean-signal"] .detail-content .detail-source-link:hover {
  color: #1D4ED8;
}

/* -- Scrollbar -- */
[data-theme="clean-signal"] ::-webkit-scrollbar-thumb { background: var(--border); }

/* -- Mobile -- */
@media (max-width: 768px) {
  [data-theme="clean-signal"] .header {
    height: 44px;
    padding: 0 12px;
  }

  [data-theme="clean-signal"] .sidebar {
    top: 44px;
  }

  [data-theme="clean-signal"] .feed {
    padding: 12px;
  }
}