/* ============================================= */
/* Daily Briefing Design System — sora39.xyz     */
/* ============================================= */
:root {
  --bg: #141413;
  --bg-surface: #1a1a18;
  --bg-hover: #222220;
  --text-primary: #faf9f5;
  --text-secondary: #b0aea5;
  --text-muted: #6b6a62;
  --border: rgba(38,37,30,0.25);
  --border-light: rgba(38,37,30,0.12);
  --accent: #8b5cf6;
  --accent-light: rgba(139,92,246,0.15);
  --shadow: rgba(0,0,0,0.14) 0 4px 16px, rgba(38,37,30,0.1) 0 0 0 1px;
  --gradient: linear-gradient(135deg, #8b5cf6, #6366f1);
  --glow: 0 0 20px rgba(139,92,246,0.2);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --green: #22c55e;
  --green-bg: rgba(34,197,94,0.12);
  --amber: #f59e0b;
  --amber-bg: rgba(245,158,11,0.12);
  --blue: #3b82f6;
  --blue-bg: rgba(59,130,246,0.12);
  --rose: #e11d48;
  --rose-bg: rgba(225,29,72,0.12);
  --cyan: #06b6d4;
  --cyan-bg: rgba(6,182,212,0.12);
  --purple: #a855f7;
  --purple-bg: rgba(168,85,247,0.12);
  --orange: #f97316;
  --orange-bg: rgba(249,115,22,0.12);
  --lime: #84cc16;
  --lime-bg: rgba(132,204,22,0.12);
  --indigo: #6366f1;
  --indigo-bg: rgba(99,102,241,0.12);
  --teal: #14b8a6;
  --teal-bg: rgba(20,184,166,0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  padding: 32px;
}
.container { max-width: 1400px; margin: 0 auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── HEADER ──────────────────────────────── */
.site-header {
  text-align: center;
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
.header-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.header-date {
  font-size: 36px;
  font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}
.header-insight {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
.header-period {
  display: inline-block;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 14px;
  border-radius: 20px;
  margin-top: 14px;
  letter-spacing: 0.5px;
}

/* ── SIGNAL MODEL ────────────────────────── */
.signal-model {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 32px;
  border: 1px solid var(--border);
}
.signal-model h2 {
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 28px;
  letter-spacing: 2px;
}
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.model-card {
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
}
.model-card:nth-child(1) { border-top-color: var(--green); }
.model-card:nth-child(2) { border-top-color: var(--amber); }
.model-card:nth-child(3) { border-top-color: var(--blue); }
.model-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.model-card:nth-child(1) h3 { color: var(--green); }
.model-card:nth-child(2) h3 { color: var(--amber); }
.model-card:nth-child(3) h3 { color: var(--blue); }
.model-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── NEWS SECTION ────────────────────────── */
.news-cards h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
  letter-spacing: 1px;
}
.signal-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 13px;
  font-weight: 500;
  flex-wrap: wrap;
}
.sig-high { color: var(--green); }
.sig-mid  { color: var(--amber); }
.sig-low  { color: var(--text-muted); }

/* ── NEWS CARD GRID ──────────────────────── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.news-cards .news-card + .news-card { margin-top: 0; } /* overridden by grid gap */
.news-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--border);
  transition: border-color 0.2s;
}
.news-card:hover { border-color: rgba(139,92,246,0.3); }
.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.signal-dot {
  font-size: 14px;
  flex-shrink: 0;
}
.signal-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}
.tag-high { background: var(--green-bg); color: var(--green); }
.tag-mid  { background: var(--amber-bg); color: var(--amber); }
.tag-low  { background: rgba(107,106,98,0.12); color: var(--text-muted); }

.category-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}
.tag-blue   { background: var(--blue-bg);   color: var(--blue); }
.tag-rose   { background: var(--rose-bg);   color: var(--rose); }
.tag-cyan   { background: var(--cyan-bg);   color: var(--cyan); }
.tag-purple { background: var(--purple-bg); color: var(--purple); }
.tag-amber  { background: var(--amber-bg);  color: var(--amber); }
.tag-lime   { background: var(--lime-bg);   color: var(--lime); }
.tag-orange { background: var(--orange-bg); color: var(--orange); }
.tag-indigo { background: var(--indigo-bg); color: var(--indigo); }
.tag-teal   { background: var(--teal-bg);   color: var(--teal); }
.tag-gray   { background: rgba(107,106,98,0.12); color: var(--text-muted); }

.card-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.card-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 10px;
}
.card-sources {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
  word-break: break-all;
}
.card-sources a {
  color: var(--accent);
  margin-right: 12px;
  white-space: nowrap;
}
.card-sources a:hover { opacity: 0.7; }
.card-analysis {
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-left: 2px solid var(--accent);
}
.card-analysis strong { color: var(--text-primary); font-weight: 500; }

/* ── IMPACT SECTION ──────────────────────── */
.impact-section {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 32px;
  border: 1px solid var(--border);
}
.impact-section h2 {
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 28px;
  letter-spacing: 2px;
}
.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.impact-card {
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border);
}
.impact-card:nth-child(1) { border-top: 3px solid var(--green); }
.impact-card:nth-child(1) h3 { color: var(--green); }
.impact-card:nth-child(2) { border-top: 3px solid var(--amber); }
.impact-card:nth-child(2) h3 { color: var(--amber); }
.impact-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.impact-card ol {
  padding-left: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.impact-card ol li { margin-bottom: 6px; }
.impact-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 6px;
  letter-spacing: 0.5px;
}
.impact-tag.short { background: rgba(34,197,94,0.12); color: var(--green); }
.impact-tag.mid  { background: rgba(245,158,11,0.12); color: var(--amber); }
.impact-tag.long { background: rgba(99,102,241,0.12); color: var(--indigo); }

/* ── COMPARISON ROW ──────────────────────── */
.comparison-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.compare-box {
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border);
}
.compare-box:nth-child(1) { border-top: 3px solid var(--amber); }
.compare-box:nth-child(2) { border-top: 3px solid var(--purple); }
.compare-box h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.compare-box:nth-child(1) h3 { color: var(--amber); }
.compare-box:nth-child(2) h3 { color: var(--purple); }
.compare-box ul {
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.compare-box ul li { margin-bottom: 6px; }

/* ── FOOTER ──────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  font-size: 12px;
  color: var(--text-muted);
}
.site-footer p { margin-bottom: 4px; }
.site-footer .footer-note { font-size: 11px; color: var(--text-muted); margin-top: 8px; opacity: 0.7; }

/* ============================================= */
/* RESPONSIVE: TABLET  (768px – 1199px)          */
/* ============================================= */
@media (max-width: 1199px) {
  body { padding: 24px; }
  .container { max-width: 100%; }
  .header-date { font-size: 28px; }
  .model-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .signal-model { padding: 28px 24px; }
}

/* ============================================= */
/* RESPONSIVE: MOBILE  (< 768px)                 */
/* ============================================= */
@media (max-width: 767px) {
  body { padding: 14px; }
  .site-header { padding: 24px 0 18px; margin-bottom: 20px; }
  .header-date { font-size: 22px; letter-spacing: 1px; }
  .header-insight { font-size: 13px; }
  .signal-model { padding: 20px 16px; border-radius: var(--radius-md); margin-bottom: 20px; }
  .signal-model h2 { font-size: 14px; margin-bottom: 18px; }
  .model-grid { grid-template-columns: 1fr; gap: 12px; }
  .model-card { padding: 14px; }
  .model-card h3 { font-size: 13px; }
  .model-card p { font-size: 12px; }
  .news-cards h2 { font-size: 17px; margin-bottom: 8px; }
  .signal-bar { font-size: 12px; gap: 10px; }
  .news-grid { grid-template-columns: 1fr; gap: 10px; }
  .news-card { padding: 14px; }
  .news-card + .news-card { margin-top: 0; }
  .card-header { gap: 6px; }
  .card-title { font-size: 14px; }
  .card-excerpt { font-size: 12px; line-height: 1.5; }
  .card-analysis { font-size: 11px; padding: 8px 10px; }
  .card-sources { font-size: 10px; }
  .card-sources a { margin-right: 8px; }
  .signal-tag, .category-tag { font-size: 10px; padding: 1px 6px; }
  .impact-section { padding: 20px 16px; border-radius: var(--radius-md); margin-bottom: 20px; }
  .impact-section h2 { font-size: 14px; margin-bottom: 18px; }
  .impact-grid { grid-template-columns: 1fr; gap: 12px; }
  .impact-card { padding: 14px; }
  .impact-card h3 { font-size: 13px; margin-bottom: 10px; }
  .impact-card ol { font-size: 12px; padding-left: 16px; }
  .comparison-row { grid-template-columns: 1fr; gap: 12px; }
  .compare-box { padding: 14px; }
  .compare-box h3 { font-size: 13px; margin-bottom: 10px; }
  .compare-box ul { font-size: 12px; padding-left: 14px; }
  .site-footer { font-size: 10px; padding: 16px 0; }
}

/* ============================================= */
/* RESPONSIVE: NARROW MOBILE  (< 420px)          */
/* ============================================= */
@media (max-width: 419px) {
  body { padding: 10px; }
  .header-date { font-size: 18px; }
  .card-title { font-size: 13px; }
  .signal-model { padding: 14px 10px; }
  .news-card { padding: 10px; }
  .card-sources a { display: inline-block; margin-bottom: 2px; }
}