/* ═══════════════════════════════════════════
   FinAce Design System
   Dark financial dashboard · 2026
   ═══════════════════════════════════════════ */

:root {
  --bg: #090b10;
  --bg-elevated: #11141d;
  --bg-card: #151822;
  --bg-hover: #1c1f2b;
  --border: #1e2130;
  --border-light: #282c3a;
  --text: #e8eaef;
  --text-secondary: #8a8fa6;
  --text-muted: #555973;
  --accent: #3b82f6;
  --accent-glow: rgba(59,130,246,0.15);
  --accent-2: #8b5cf6;
  --green: #10b981;
  --green-bg: rgba(16,185,129,0.1);
  --red: #ef4444;
  --red-bg: rgba(239,68,68,0.1);
  --amber: #f59e0b;
  --amber-bg: rgba(245,158,11,0.1);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.5);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', monospace;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ═══ Nav ═══ */
nav {
  background: rgba(17,20,29,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav-links { display: flex; gap: 8px; }
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.nav-links a:hover { color: var(--text); background: var(--bg-hover); }
.nav-links a.active { color: var(--accent); background: var(--accent-glow); }

/* ═══ Layout ═══ */
.container { max-width: 1200px; margin: 0 auto; padding: 32px 24px; }

.page-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}
.subtitle { color: var(--text-secondary); font-size: 1rem; margin-bottom: 32px; }

/* ═══ Hero Banner ═══ */
.hero-banner {
  background: linear-gradient(135deg, #11141d 0%, #151822 50%, #1a1030 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}
.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.hero-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}
.hero-stat {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.hero-stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.hero-stat-value { font-size: 1.8rem; font-weight: 800; font-family: var(--mono); }
.hero-stat-sub { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; }
.up { color: var(--green); }
.down { color: var(--red); }
.flat { color: var(--text-secondary); }

/* ═══ Cards ═══ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 20px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-icon { font-size: 1.3rem; }

/* ═══ Report Content ═══ */
.report-body h1 { font-size: 1.3rem; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.report-body h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 28px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.report-body h3 { font-size: 0.95rem; font-weight: 600; margin: 20px 0 10px; }

/* ═══ Tables ═══ */
.report-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}
.report-body th {
  background: var(--bg-elevated);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}
.report-body td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.85rem;
}
.report-body tr:last-child td { border-bottom: none; }
.report-body tr:hover td { background: rgba(255,255,255,0.02); }

.report-body hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }
.report-body ul, .report-body ol { padding-left: 20px; margin: 10px 0; color: var(--text-secondary); }
.report-body li { margin-bottom: 4px; }
.report-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 12px 18px;
  margin: 16px 0;
  background: rgba(59,130,246,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.report-body a { color: var(--accent); text-decoration: none; }
.report-body a:hover { text-decoration: underline; }

/* ═══ Empty State ═══ */
.empty-card {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  margin-bottom: 20px;
}
.empty-card h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.empty-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ═══ Tabs ═══ */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; background: var(--bg-elevated); border-radius: var(--radius); padding: 4px; width: fit-content; }
.tab {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-secondary);
  border: none;
  background: none;
  transition: all 0.2s;
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--bg-card); color: var(--text); box-shadow: var(--shadow); }

/* ═══ Pick Cards ═══ */
.picks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
  margin: 16px 0;
}
.pick-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: all 0.2s;
}
.pick-card:hover { border-color: var(--border-light); box-shadow: var(--shadow-lg); }
.pick-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.pick-code { font-family: var(--mono); font-size: 1.1rem; font-weight: 700; }
.pick-name { font-size: 0.9rem; color: var(--text-secondary); }
.pick-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.pick-badge.short { background: var(--amber-bg); color: var(--amber); }
.pick-badge.long { background: rgba(139,92,246,0.15); color: #a78bfa; }
.pick-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.pick-metric-label { font-size: 0.75rem; color: var(--text-muted); }
.pick-metric-value { font-size: 1.1rem; font-weight: 600; font-family: var(--mono); }

/* ═══ Analyze Form ═══ */
.analyze-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 24px;
}
.analyze-card h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: 24px; }
.form-grid { display: grid; grid-template-columns: 2fr 1fr auto; gap: 16px; align-items: end; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 600; font-size: 0.85rem; color: var(--text-secondary); }
.form-group input, .form-group select {
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: all 0.2s;
}
.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group .hint { font-size: 0.78rem; color: var(--text-muted); }
.btn-primary {
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  height: fit-content;
}
.btn-primary:hover { box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-outline {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ═══ Status / Loading ═══ */
.status-area { margin-bottom: 24px; }
.status-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#status-text { font-weight: 600; font-size: 1.1rem; }
#status-sub { color: var(--text-muted); font-size: 0.9rem; }

/* ═══ Result ═══ */
.result-area { margin-bottom: 24px; }
.result-message { margin-bottom: 16px; }
.success { color: var(--green); font-weight: 600; }
.warning { color: var(--amber); font-weight: 600; }
#report-frame {
  width: 100%;
  min-height: 80vh;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
}

/* ═══ Error ═══ */
.error-card {
  padding: 18px 22px;
  background: var(--red-bg);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: var(--radius);
  color: var(--red);
  font-weight: 500;
}

/* ═══ History Grid ═══ */
.history-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.history-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  transition: all 0.2s;
}
.history-card:hover { border-color: var(--accent); background: var(--bg-hover); }
.history-card .arrow { color: var(--accent); font-weight: 600; }

/* ═══ Date Chips ═══ */
.date-list { display: flex; flex-wrap: wrap; gap: 8px; }
.date-chip {
  display: inline-block;
  padding: 8px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s;
}
.date-chip:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

/* ═══ Footer ═══ */
footer { text-align: center; padding: 32px 0; color: var(--text-muted); font-size: 0.82rem; border-top: 1px solid var(--border); margin-top: 48px; }

/* ═══ Responsive ═══ */
@media (max-width: 768px) {
  .nav-links { gap: 2px; }
  .nav-links a { padding: 6px 10px; font-size: 0.82rem; }
  .container { padding: 20px 16px; }
  .page-title { font-size: 1.5rem; }
  .hero-banner { padding: 24px 20px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stat-value { font-size: 1.4rem; }
  .form-grid { grid-template-columns: 1fr; }
  .picks-grid { grid-template-columns: 1fr; }
  .card { padding: 20px 16px; }
  .analyze-card { padding: 24px 20px; }
}