/* =========================================================
   Financial News — Apple-inspired design system
   Monochrome luxury · generous whitespace · SF Pro feel
   ========================================================= */

:root {
  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Segoe UI", system-ui, sans-serif;
  --font-thai: "Noto Sans Thai", "Inter", -apple-system, system-ui, sans-serif;

  /* Light palette — monochrome luxury */
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-subtle: #fafafc;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --accent: #0066ff;
  --accent-soft: rgba(0, 102, 255, 0.1);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 8px 32px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);

  /* Category accents */
  --c-business: #0a84ff;
  --c-economy: #30b94d;
  --c-politics: #ff6b35;

  /* Confidence */
  --conf-high: #30b94d;
  --conf-mid: #ff9f0a;
  --conf-low: #ff453a;

  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 28px;
  --maxw: 940px;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-elevated: #1c1c1e;
  --bg-card: #161618;
  --bg-subtle: #1a1a1c;
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #8e8e93;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.18);
  --accent: #0a84ff;
  --accent-soft: rgba(10, 132, 255, 0.16);
  --glass: rgba(22, 22, 24, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 140px; }

body {
  font-family: var(--font-thai);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.5s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* =========================================================
   Navigation — frosted glass
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid var(--glass-border);
}
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav__brand { display: flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: -0.02em; }
.nav__logo { font-size: 18px; }
.nav__title { font-family: var(--font-sans); font-size: 17px; }
.nav__title-accent { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 28px;
  margin-left: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  flex: 1;
}
.nav__links a { transition: color 0.2s; white-space: nowrap; }
.nav__links a:hover { color: var(--text); }

.nav__actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }

.date-select {
  font-family: var(--font-thai);
  font-size: 13px;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 980px;
  padding: 7px 14px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.date-select:hover { border-color: var(--border-strong); }
.date-select:focus { box-shadow: 0 0 0 3px var(--accent-soft); }

.theme-toggle {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  font-size: 15px;
  color: var(--text);
  transition: transform 0.3s var(--ease), border-color 0.2s, background 0.3s;
}
.theme-toggle:hover { transform: scale(1.08); border-color: var(--border-strong); }
.theme-toggle:active { transform: scale(0.94); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 88px 24px 56px;
  text-align: center;
  overflow: hidden;
}
.hero__inner { position: relative; z-index: 1; }
.hero__eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 18px;
}
.hero__title {
  font-family: var(--font-thai);
  font-size: clamp(34px, 6vw, 60px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}
.hero__subtitle {
  font-size: clamp(15px, 2.4vw, 19px);
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 28px;
  line-height: 1.55;
}
.hero__meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-tertiary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 980px;
  box-shadow: var(--shadow-sm);
}
.hero__date { font-weight: 600; color: var(--text); }
.hero__dot { opacity: 0.4; }

.hero__glow {
  position: absolute;
  top: -120px; left: 50%;
  transform: translateX(-50%);
  width: 680px; height: 420px;
  background: radial-gradient(ellipse at center,
    rgba(10, 132, 255, 0.16), rgba(10, 132, 255, 0) 70%);
  filter: blur(20px);
  z-index: 0;
  pointer-events: none;
}

/* =========================================================
   Category Tabs
   ========================================================= */
.tabs {
  position: sticky;
  top: 56px;
  z-index: 90;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid var(--glass-border);
}
.tabs__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs__inner::-webkit-scrollbar { display: none; }
.tab {
  font-family: var(--font-thai);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: 980px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.25s var(--ease);
}
.tab__emoji { font-size: 16px; }
.tab:hover { color: var(--text); background: var(--bg-elevated); }
.tab.is-active {
  background: var(--text);
  color: var(--bg);
  box-shadow: var(--shadow-sm);
}

/* =========================================================
   Main / Panels
   ========================================================= */
.main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 48px 24px 96px;
  min-height: 50vh;
}
.panel { display: none; animation: fadeUp 0.5s var(--ease); }
.panel.is-active { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Region heading (🌍 Global / 🇹🇭 Thailand) — rendered from markdown h2 */
.md h1 { display: none; } /* page already shows title via tab */

.md h2 {
  font-family: var(--font-thai);
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 56px 0 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 140px;
}
.md h2:first-of-type { margin-top: 8px; }

/* =========================================================
   News card — built by JS (enhanceMarkdown / transformBody)
   ========================================================= */
.news-card {
  position: relative;
  display: flex;
  gap: 18px;
  margin: 20px 0 0;
  padding: 26px 26px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.3s;
}
.news-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* Number badge */
.news-card__num {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 50%;
  letter-spacing: -0.02em;
}

.news-card__main { flex: 1 1 auto; min-width: 0; }

/* English kicker (small, muted, uppercase) */
.news-card__kicker {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  line-height: 1.45;
  margin: 4px 0 0;
}

/* Thai headline (large, bold) — พาดหัวไทย label is stripped by JS */
.news-card__headline {
  font-family: var(--font-thai);
  font-size: clamp(20px, 3.2vw, 25px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.34;
  margin: 7px 0 0;
  color: var(--text);
}

.news-card__body { margin-top: 14px; }

/* Analysis paragraph */
.news-card__analysis {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.47;
  margin: 0;
}
.news-card__analysis strong { color: var(--text); font-weight: 600; }

/* "Why it matters" callout */
.news-card__why {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--bg-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.news-card__why-label {
  font-family: var(--font-thai);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}
.news-card__why-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.43;
}

/* Meta row (confidence + source) */
.news-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* Per-panel accent for badge + callout */
.panel[data-panel="business"] .news-card__why { border-left-color: var(--c-business); }
.panel[data-panel="business"] .news-card__why-label { color: var(--c-business); }
.panel[data-panel="economy"] .news-card__why { border-left-color: var(--c-economy); }
.panel[data-panel="economy"] .news-card__why-label { color: var(--c-economy); }
.panel[data-panel="politics"] .news-card__why { border-left-color: var(--c-politics); }
.panel[data-panel="politics"] .news-card__why-label { color: var(--c-politics); }

/* Confidence pill (post-processed by JS) */
.conf-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-thai);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 11px;
  border-radius: 980px;
}
.conf-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.conf-pill.is-high { color: var(--conf-high); background: rgba(48, 185, 77, 0.12); }
.conf-pill.is-mid { color: var(--conf-mid); background: rgba(255, 159, 10, 0.14); }
.conf-pill.is-low { color: var(--conf-low); background: rgba(255, 69, 58, 0.12); }

/* Source link chip */
.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 400;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 980px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.source-chip::before { content: "🔗"; font-size: 11px; }
.source-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* Region accent dot before each panel's section headings via data attr */
.panel[data-panel="business"] .md h2 { border-bottom-color: rgba(10,132,255,0.25); }
.panel[data-panel="economy"] .md h2 { border-bottom-color: rgba(48,185,77,0.25); }
.panel[data-panel="politics"] .md h2 { border-bottom-color: rgba(255,107,53,0.25); }

/* Hide the redundant "ข้อห้าม / ข้อจำกัด" trailing sections if present */
.md hr { display: none; }

/* Empty category placeholder */
.panel__empty {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin-top: 28px;
}

/* =========================================================
   State (loading / empty / error)
   ========================================================= */
.state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-secondary);
}
.state__emoji { font-size: 48px; margin-bottom: 16px; }
.state__title { font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.state__text { font-size: 15px; max-width: 420px; margin: 0 auto; }

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 20px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* skeleton */
.skeleton { animation: pulse 1.4s ease-in-out infinite; }
.skel-line { height: 14px; border-radius: 7px; background: var(--border); margin: 12px 0; }
.skel-card { height: 140px; border-radius: var(--radius); background: var(--border); margin: 20px 0; }
@keyframes pulse { 50% { opacity: 0.45; } }

/* =========================================================
   Footer
   ========================================================= */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px;
  text-align: center;
}
.footer__brand { font-family: var(--font-sans); font-weight: 700; font-size: 16px; margin-bottom: 10px; }
.footer__note { font-size: 13px; color: var(--text-secondary); max-width: 480px; margin: 0 auto 12px; line-height: 1.5; }
.footer__copy { font-size: 12px; color: var(--text-tertiary); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .hero { padding: 56px 20px 40px; }
  .main { padding: 32px 20px 72px; }
  .nav__inner { gap: 12px; }
  .date-select { max-width: 130px; }
  .news-card { gap: 14px; padding: 20px 18px; }
  .news-card__num { width: 32px; height: 32px; font-size: 15px; }
}
@media (max-width: 420px) {
  .nav__title { font-size: 15px; }
  .tab__label { font-size: 13px; }
  .news-card { flex-direction: column; gap: 12px; }
}