/* ===== AB Strategy Factory — Design System =====
   Matches Aquabridge Trading report design language.
   Inter 300/400/500/600 · Navy accent · Minimal borders · Financial terminal aesthetic
   ===== */

:root {
  --black: #1a1a1a;
  --dark: #333;
  --body: #4a4a4a;
  --muted: #888;
  --light: #b0b0b0;
  --border: #e0e0e0;
  --bg: #fff;
  --surface: #f8f8f8;
  --accent: #003a70;
  --red: #c4353a;
  --green: #1a7a3a;
  --purple: #8b5cf6;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 13px;
  line-height: 1.65;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: #004f9a; }

/* ── Header (matches report header-bar exactly) ── */
.header-bar {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--accent); }

.nav-links a.active {
  color: var(--accent);
  font-weight: 500;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ── Credits Badge ── */
.credits-badge {
  font-size: 11px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.3px;
}

/* ── Container ── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 32px 60px;
}

/* ── Section Label (report-style) ── */
.section-label {
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
}

/* ── Divider ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

.divider-heavy {
  border: none;
  border-top: 2px solid var(--black);
  margin: 32px 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--body);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  line-height: 1.4;
}

.btn:hover { background: var(--surface); border-color: var(--light); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: #002a54; border-color: #002a54; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover { background: rgba(0, 58, 112, 0.05); }

.btn-danger {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}
.btn-danger:hover { background: #a82e32; }

.btn-sm { padding: 4px 10px; font-size: 11px; }
.btn-lg { padding: 12px 24px; font-size: 13px; font-weight: 600; }

/* ── Badges / Tags ── */
.badge, .tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 600;
  border-radius: 2px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-private, .tag-private { background: #eee; color: var(--muted); }
.badge-shared, .tag-shared { background: #e0eaf5; color: var(--accent); }
.badge-market, .tag-market { background: #ede9fe; color: var(--purple); }
.badge-square, .tag-square { background: #dcf5e5; color: var(--green); }

/* ── Card ── */
.card {
  border: 1px solid var(--border);
  padding: 24px;
  background: var(--bg);
}

.card + .card { margin-top: 16px; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--black);
}

/* ── Stats (report-style: 1px gap grid) ── */
.stats {
  display: flex;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 32px;
}

.stat {
  flex: 1;
  background: var(--bg);
  padding: 20px;
  text-align: center;
}

.stat-num {
  font-size: 26px;
  font-weight: 300;
  color: var(--black);
  line-height: 1.2;
}

.stat-num.green { color: var(--green); }
.stat-num.red { color: var(--red); }
.stat-num.purple { color: var(--purple); }

.stat-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 4px;
}

/* ── Tables (report-style) ── */
.table-wrap {
  margin-bottom: 32px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

thead th {
  text-align: left;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 8px 12px;
  border-bottom: 2px solid var(--black);
  white-space: nowrap;
}

thead th.num { text-align: right; }

tbody td {
  padding: 10px 12px;
  border-bottom: 1px solid #f0f0f0;
  vertical-align: middle;
}

tbody td.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: #fafafa; }

.val-muted { color: var(--light); }
.val-green { color: var(--green); font-weight: 500; }
.val-red { color: var(--red); font-weight: 500; }

/* ── Analysis Block (report-style) ── */
.analysis-block {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 32px;
}

.analysis-block h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.analysis-row {
  display: flex;
  gap: 8px;
  align-items: baseline;
  font-size: 13px;
  margin-bottom: 10px;
}

.analysis-key {
  font-weight: 500;
  color: var(--dark);
  flex-shrink: 0;
  min-width: 90px;
}

.analysis-val { color: var(--body); }

/* ── Forms (refined to match report aesthetic) ── */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 9px 12px;
  font-size: 13px;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--bg);
  color: var(--body);
  transition: border-color 0.15s;
  line-height: 1.4;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea { resize: vertical; min-height: 72px; }

.form-group .hint {
  font-size: 10px;
  color: var(--light);
  margin-top: 4px;
  letter-spacing: 0.3px;
}

/* ── Radio Group ── */
.radio-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.radio-group label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--body);
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
}

.radio-group input[type="radio"] { width: auto; }

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 10px 18px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.15s, border-color 0.15s;
}

.tab:hover { color: var(--body); }

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 24px;
  width: 100%;
  max-width: 440px;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--black);
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ── Toast ── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 10px 16px;
  font-size: 12px;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--body);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  animation: toastIn 0.2s ease;
  max-width: 360px;
}

.toast-success { border-left: 3px solid var(--green); }
.toast-error { border-left: 3px solid var(--red); }
.toast-info { border-left: 3px solid var(--accent); }

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

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

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-lg { width: 28px; height: 28px; border-width: 2px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Card Grid ── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card-grid .card { margin-top: 0; }

/* ── Report Card ── */
.report-card-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--black);
  margin-bottom: 4px;
}

.report-card-meta {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 12px;
}

.report-card-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* ── Pagination ── */
.pagination {
  display: flex;
  gap: 4px;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
}

.pagination .btn { min-width: 36px; }
.pagination .btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── Filter Bar ── */
.filter-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-bar .btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.search-input {
  padding: 7px 12px;
  font-size: 12px;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 0;
  width: 220px;
}

.search-input:focus { outline: none; border-color: var(--accent); }

/* ── Login Page ── */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--surface);
}

.login-box {
  width: 360px;
  padding: 40px 32px;
  background: var(--bg);
  border: 1px solid var(--border);
}

.login-logo {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 32px;
}

/* ===== Analyze Page Layout ===== */
.analyze-layout {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  min-height: calc(100vh - 56px);
}

.analyze-sidebar {
  width: 300px;
  flex-shrink: 0;
  padding: 32px;
  border-right: 1px solid var(--border);
  overflow-y: auto;
}

.analyze-main {
  flex: 1;
  overflow-y: auto;
}

.analyze-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 500px;
  color: var(--light);
}

/* ── Stream output ── */
.stream-output {
  font-size: 13px;
  line-height: 1.7;
  color: var(--body);
}

.stream-output h2 {
  font-size: 16px;
  font-weight: 500;
  color: var(--black);
  margin: 20px 0 8px;
}

.stream-output h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--dark);
  margin: 16px 0 6px;
}

.stream-output p { margin-bottom: 10px; }
.stream-output strong { color: var(--black); }

.stream-output code {
  background: var(--surface);
  padding: 1px 4px;
  border-radius: 2px;
  font-size: 11px;
}

.stream-output pre {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px;
  overflow-x: auto;
  margin: 12px 0;
}

.stream-output pre code { background: none; padding: 0; }

/* ── Report iframe ── */
.report-frame {
  width: 100%;
  border: none;
  min-height: calc(100vh - 56px);
}

/* ── Footer (report-style) ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  margin-top: 40px;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-text {
  font-size: 11px;
  color: var(--light);
}

/* ── Utility ── */
.text-muted { color: var(--muted); }
.text-sm { font-size: 11px; }
.text-accent { color: var(--accent); }
.text-red { color: var(--red); }
.text-green { color: var(--green); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }

/* ── Print ── */
@media print {
  .header-bar, .analyze-sidebar, .no-print { display: none !important; }
  .analyze-main { padding: 0; }
}

@media (max-width: 768px) {
  .analyze-layout { flex-direction: column; }
  .analyze-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  .header-inner { padding: 0 16px; }
  .container { padding: 24px 16px; }
}