/* DSE Fourier Analysis v3.0 — Dashboard CSS
   Ported from v2.0 interactive_html_exporter.py inline styles. */

:root {
  --bg-deep: #f4f5f7;
  --bg-base: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #f8f9fb;
  --border: #e2e5ea;
  --border-glow: #c7ccd4;
  --accent: #d63355;
  --accent-glow: rgba(214, 51, 85, 0.10);
  --accent-dim: rgba(214, 51, 85, 0.45);
  --green: #1a9d52;
  --green-glow: rgba(26, 157, 82, 0.10);
  --orange: #e07b1c;
  --gold: #c89000;
  --cyan: #0a9bd1;
  --purple: #8b3fd1;
  --text: #1c2230;
  --text-dim: #5a6273;
  --text-faint: #9aa0ac;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(20, 25, 40, 0.08);
  --shadow-glow: 0 0 20px var(--accent-glow);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg-deep);
  font-size: 14px;
  line-height: 1.5;
}

/* ===== Layout ===== */
.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
  width: 300px;
  min-width: 300px;
  background: var(--bg-base);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition);
  overflow: hidden;
}
.sidebar.collapsed { margin-left: -300px; }

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
.sidebar-header h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.stock-count {
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 12px;
}
.search-box {
  position: relative;
}
.search-box input {
  width: 100%;
  padding: 8px 12px 8px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text);
  background: var(--bg-elevated);
  outline: none;
  transition: border-color var(--transition);
}
.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.search-box .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-faint);
  font-size: 14px;
}

.sort-bar {
  display: flex;
  gap: 4px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
}
.sort-btn {
  flex: 1;
  padding: 6px 4px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 6px;
  transition: all var(--transition);
}
.sort-btn:hover { background: var(--bg-elevated); color: var(--text); }
.sort-btn.active { background: var(--accent-glow); color: var(--accent); }

.stock-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}
.stock-list::-webkit-scrollbar { width: 6px; }
.stock-list::-webkit-scrollbar-thumb { background: var(--border-glow); border-radius: 3px; }

.stock-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  border-bottom: 1px solid rgba(226, 229, 234, 0.5);
  transition: background var(--transition);
  height: 48px;
}
.stock-item:hover { background: var(--bg-elevated); }
.stock-item.active { background: var(--accent-glow); border-left: 3px solid var(--accent); }

.stock-item .sym {
  font-weight: 700;
  font-size: 13px;
  min-width: 70px;
  color: var(--text);
}
.stock-item .price {
  font-size: 12px;
  color: var(--text-dim);
  min-width: 60px;
  text-align: right;
}
.stock-item .change-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  min-width: 50px;
  text-align: center;
}
.change-badge.up { background: var(--green-glow); color: var(--green); }
.change-badge.down { background: var(--accent-glow); color: var(--accent); }
.change-badge.flat { background: var(--bg-elevated); color: var(--text-faint); }

.stock-item sparkline { display: block; }
.stock-item .spark { margin-left: auto; opacity: 0.8; }

/* ===== Main Panel ===== */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text);
  padding: 4px;
}
.topbar .title {
  flex: 1;
  min-width: 0;
}
.topbar .title h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar .title .subtitle {
  font-size: 11px;
  color: var(--text-faint);
}
.controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.control-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-base);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.control-btn:hover { border-color: var(--accent); color: var(--accent); }
.control-btn.primary { background: var(--accent); color: white; border-color: var(--accent); }
.control-btn.primary:hover { background: var(--accent-dim); }
.control-btn.refreshing { opacity: 0.6; pointer-events: none; }
.control-btn .spinner {
  width: 12px; height: 12px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.date-inputs { display: flex; gap: 6px; align-items: center; }
.date-inputs input {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px;
  color: var(--text);
  background: var(--bg-elevated);
  outline: none;
}
.date-inputs input:focus { border-color: var(--accent); }
.proj-select {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px;
  color: var(--text);
  background: var(--bg-elevated);
  cursor: pointer;
  outline: none;
}

/* ===== Stats Row ===== */
.stats-row {
  display: flex;
  gap: 12px;
  padding: 16px 20px;
  flex-shrink: 0;
  overflow-x: auto;
}
.stat-card {
  flex: 1;
  min-width: 120px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.stat-card .label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  margin-bottom: 4px;
}
.stat-card .value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.stat-card .value.accent { color: var(--accent); }
.stat-card .value.green { color: var(--green); }
.stat-card .sub {
  font-size: 10px;
  color: var(--text-faint);
  margin-top: 2px;
}

/* ===== Chart Area ===== */
.chart-area {
  flex: 1;
  padding: 12px 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chart-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.toggle-chip {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-dim);
  background: var(--bg-base);
  transition: all var(--transition);
  user-select: none;
}
.toggle-chip.active { color: var(--text); border-color: var(--text-dim); }
.toggle-chip .dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}
.toggle-chip.disabled { opacity: 0.4; text-decoration: line-through; }
.fs-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-dim);
}
.fs-btn:hover { color: var(--accent); border-color: var(--accent); }

#mainChart {
  flex: 1;
  min-height: 300px;
}

.spectrum-section {
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  padding-top: 8px;
}
.spectrum-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.spectrum-title:hover { color: var(--accent); }
.spectrum-title .arrow { transition: transform var(--transition); }
.spectrum-title.collapsed .arrow { transform: rotate(-90deg); }
#spectrumChart {
  height: 140px;
  margin-top: 4px;
}
.spectrum-section.collapsed #spectrumChart { display: none; }

/* ===== Footer ===== */
.footer {
  padding: 8px 20px;
  font-size: 10px;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.footer kbd {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: monospace;
  font-size: 10px;
}

/* ===== Loading Overlay ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  display: none;
}
.loading-overlay.show { display: flex; }
.loading-spinner {
  width: 40px; height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ===== Sidebar Backdrop (mobile) ===== */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 99;
}
.sidebar-backdrop.show { display: block; }

/* ===== Mobile Search FAB ===== */
.mobile-search-fab {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  border: none;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(214, 51, 85, 0.4);
  z-index: 100;
}

/* ===== Rankings Modal ===== */
.rankings-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.rankings-overlay.show { display: flex; }
.rankings-modal {
  background: var(--bg-base);
  border-radius: var(--radius);
  width: 90%;
  max-width: 700px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}
.rankings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.rankings-header h2 { font-size: 16px; font-weight: 700; }
.rankings-close {
  background: none; border: none; font-size: 22px;
  cursor: pointer; color: var(--text-faint);
}
.rankings-close:hover { color: var(--accent); }
.rankings-tabs {
  display: flex;
  gap: 4px;
  padding: 8px 20px;
  border-bottom: 1px solid var(--border);
}
.rank-tab {
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
}
.rank-tab.active { background: var(--accent); color: white; border-color: var(--accent); }
.rankings-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px 20px;
}
.rankings-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.rankings-body th, .rankings-body td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.rankings-body th {
  font-weight: 700;
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
}
.rankings-body tr { cursor: pointer; }
.rankings-body tr:hover { background: var(--bg-elevated); }
.reliability-bar {
  display: inline-block;
  width: 50px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  vertical-align: middle;
}
.reliability-bar .fill { height: 100%; background: var(--green); }
.rankings-meta {
  font-size: 11px;
  color: var(--text-faint);
  padding: 8px 20px;
  border-top: 1px solid var(--border);
}

/* ===== CSS Fullscreen Fallback ===== */
.chart-area.css-fs {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--bg-base);
  padding: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .app { overflow: auto; height: auto; min-height: 100vh; }
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 85vw; max-width: 340px;
    z-index: 100;
    margin-left: -100%;
  }
  .sidebar.open { margin-left: 0; }
  .sidebar.collapsed { margin-left: -100%; }
  .menu-toggle { display: block; }
  .mobile-search-fab { display: flex; align-items: center; justify-content: center; }
  .stock-item .spark { display: none; }
  .stock-item { height: 56px; }
  .stats-row { flex-wrap: nowrap; }
  .stat-card { min-width: 100px; }
  .footer { display: none; }
  .spectrum-section { display: none; }
  .rankings-modal { width: 95%; max-height: 90vh; }
  .rankings-body th:nth-child(6), .rankings-body td:nth-child(6),
  .rankings-body th:nth-child(7), .rankings-body td:nth-child(7) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .loading-spinner { animation: none; }
}