/* ============================================
   Finance Dashboard — Clean & Elegant Design
   Supports Light / Dark theme via [data-theme]
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ============ Dark Theme (default) ============ */
:root,
[data-theme="dark"] {
  --bg-body: #1a1d23;
  --bg-card: #22262e;
  --bg-card-hover: #282d36;
  --border-color: #2e333d;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --text-muted: #6c757d;
  --accent-blue: #4a9eff;
  --chart-line: #4a9eff;
  --chart-fill: rgba(74, 158, 255, 0.08);
  --chart-grid: rgba(255,255,255,0.06);

  --signal-buy: #34d399;
  --signal-buy-bg: rgba(52, 211, 153, 0.12);
  --signal-hold: #fbbf24;
  --signal-hold-bg: rgba(251, 191, 36, 0.12);
  --signal-wait: #f87171;
  --signal-wait-bg: rgba(248, 113, 113, 0.12);
  --signal-safe: #f59e0b;
  --signal-safe-bg: rgba(245, 158, 11, 0.15);

  --max-width: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
}

/* ============ Light Theme ============ */
[data-theme="light"] {
  --bg-body: #f5f6fa;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f1f5;
  --border-color: #e0e3e8;
  --text-primary: #1a1d23;
  --text-secondary: #5f6368;
  --text-muted: #9aa0a6;
  --accent-blue: #1a73e8;
  --chart-line: #1a73e8;
  --chart-fill: rgba(26, 115, 232, 0.06);
  --chart-grid: rgba(0,0,0,0.06);

  --signal-buy: #0d9668;
  --signal-buy-bg: rgba(13, 150, 104, 0.1);
  --signal-hold: #d97706;
  --signal-hold-bg: rgba(217, 119, 6, 0.1);
  --signal-wait: #dc2626;
  --signal-wait-bg: rgba(220, 38, 38, 0.1);
  --signal-safe: #b45309;
  --signal-safe-bg: rgba(180, 83, 9, 0.1);
}

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

body {
  background-color: var(--bg-body);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s, color 0.3s;
}

/* ============ Container ============ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ Top Header ============ */
.dashboard-header {
  padding: 24px 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.dashboard-header h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ============ Theme Toggle ============ */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
}

/* ============ News Ticker ============ */
.news-ticker-container {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 20px;
  overflow: hidden;
  transition: background 0.3s, border-color 0.3s;
}

.news-ticker-label {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--accent-blue);
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  margin-right: 12px;
  z-index: 2;
}

[data-theme="light"] .news-ticker-label {
  color: #fff;
}

.news-ticker-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
  white-space: nowrap;
  display: flex;
  align-items: center;
}

.news-ticker-wrapper::before,
.news-ticker-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 20px;
  z-index: 1;
}

.news-ticker-wrapper::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-card), transparent);
}
.news-ticker-wrapper::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-card), transparent);
}

.news-ticker-content {
  display: inline-flex;
  gap: 60px;
  padding-left: 100%;
  animation: tickerScroll 40s linear infinite;
  font-size: 14px;
}

.news-ticker-content:hover {
  animation-play-state: paused;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.news-item a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s;
}

.news-item a:hover {
  color: var(--accent-blue);
  text-decoration: underline;
}

.news-time {
  font-size: 12px;
  color: var(--text-muted);
}

@keyframes tickerScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

/* ============ Tab Navigation ============ */
.tab-nav {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}

.tab-btn:hover { color: var(--text-primary); }

.tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-blue);
}

.tab-btn .tab-price {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.tab-btn.active .tab-price { color: var(--accent-blue); }

/* ============ Tab Content ============ */
.tab-content {
  display: none;
  animation: fadeSlide 0.3s ease;
}
.tab-content.active { display: block; }

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ Signal Banner ============ */
.signal-banner {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 20px;
  transition: border-color 0.3s, background 0.3s;
}

.signal-banner.buy  { border-left: 4px solid var(--signal-buy); }
.signal-banner.hold { border-left: 4px solid var(--signal-hold); }
.signal-banner.wait { border-left: 4px solid var(--signal-wait); }
.signal-banner.safe { border-left: 4px solid var(--signal-safe); background: var(--signal-safe-bg); }

.signal-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 22px;
}

.signal-banner.buy  .signal-icon { background: var(--signal-buy-bg); }
.signal-banner.hold .signal-icon { background: var(--signal-hold-bg); }
.signal-banner.wait .signal-icon { background: var(--signal-wait-bg); }
.signal-banner.safe .signal-icon { background: var(--signal-safe-bg); }

.signal-body { flex: 1; min-width: 0; }

.signal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 2px;
}
.signal-title.buy  { color: var(--signal-buy); }
.signal-title.hold { color: var(--signal-hold); }
.signal-title.wait { color: var(--signal-wait); }
.signal-title.safe { color: var(--signal-safe); }

.signal-meta {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.signal-reasons { list-style: none; padding: 0; }
.signal-reasons li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 3px 0;
}
.signal-reasons li::before {
  content: "→ ";
  color: var(--text-muted);
}

/* ============ Fund Price Header ============ */
.fund-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.fund-price { font-size: 32px; font-weight: 700; }

.fund-change {
  font-size: 14px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.fund-change.up   { color: var(--signal-buy); background: var(--signal-buy-bg); }
.fund-change.down { color: var(--signal-wait); background: var(--signal-wait-bg); }

.fund-name { font-size: 14px; color: var(--text-secondary); }

/* ============ Indicator Cards Grid ============ */
.indicators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.indicator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: background 0.2s, border-color 0.2s;
}
.indicator-card:hover {
  background: var(--bg-card-hover);
  border-color: #3a4050;
}

.indicator-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.indicator-value-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.indicator-value { font-size: 28px; font-weight: 700; letter-spacing: -0.5px; }
.indicator-unit { font-size: 14px; color: var(--text-secondary); }

.indicator-bar {
  margin-top: 12px;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
}

.indicator-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.6s ease;
}

.bar-buy  { background: var(--signal-buy); }
.bar-hold { background: var(--signal-hold); }
.bar-wait { background: var(--signal-wait); }

/* ============ Chart Container ============ */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 32px;
  position: relative;
  transition: background 0.3s;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.chart-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.chart-filters {
  display: flex;
  background: var(--bg-body);
  border-radius: 6px;
  padding: 2px;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.canvas-wrapper {
  position: relative;
  height: 300px;
  width: 100%;
}

.canvas-wrapper canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ============ Footer ============ */
.dashboard-footer {
  text-align: center;
  padding: 24px 0 32px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

/* ============ Loading / Error ============ */
#loader {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
  color: var(--text-secondary);
  font-size: 14px;
}

.error-msg {
  text-align: center;
  padding: 40px 20px;
  color: var(--signal-wait);
  font-size: 14px;
}

/* ============ Responsive ============ */
@media (min-width: 768px) {
  .dashboard-header h1 { font-size: 26px; }
  .signal-banner { padding: 24px 30px; }
  .indicators-grid { grid-template-columns: repeat(3, 1fr); }
  .fund-price { font-size: 36px; }
}

@media (min-width: 1024px) {
  .indicators-grid { grid-template-columns: repeat(4, 1fr); }
  .container { padding: 0 40px; }
}

@media (max-width: 480px) {
  .dashboard-header { padding: 16px 0 12px; }
  .dashboard-header h1 { font-size: 18px; }
  .tab-btn { padding: 10px 14px; font-size: 13px; }
  .signal-banner { padding: 16px; flex-direction: column; gap: 12px; }
  .fund-price { font-size: 28px; }
  .indicators-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .indicator-card { padding: 14px 16px; }
  .indicator-value { font-size: 22px; }
  .chart-container { padding: 12px; }
}