/* ===== CSS Variables ===== */
:root {
  --color-bg: #0f1419;
  --color-bg-secondary: #1a1f2e;
  --color-bg-card: #1e2537;
  --color-bg-hover: #252d42;
  --color-border: #2a3350;
  --color-text-primary: #e8eaed;
  --color-text-secondary: #8b95a5;
  --color-text-muted: #5a6477;
  --color-rise: #f5475b;
  --color-rise-bg: rgba(245, 71, 91, 0.1);
  --color-fall: #2ecc71;
  --color-fall-bg: rgba(46, 204, 113, 0.1);
  --color-accent: #4a90d9;
  --color-accent-bg: rgba(74, 144, 217, 0.1);
  --color-warning: #f0a500;
  --color-score-high: #f5475b;
  --color-score-mid: #f0a500;
  --color-score-low: #5a6477;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
  --transition-fast: 0.2s ease;
}

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

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Header ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 1px;
}

.market-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-muted);
}

.market-status.trading .status-dot {
  background: var(--color-rise);
  animation: pulse 1.5s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.index-bar {
  display: flex;
  gap: 20px;
}

.index-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.index-name {
  color: var(--color-text-secondary);
}

.index-value {
  color: var(--color-text-primary);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.index-change {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
}

.index-change.rise {
  color: var(--color-rise);
}

.index-change.fall {
  color: var(--color-fall);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.update-time {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.btn-refresh {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  padding: 6px 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.btn-refresh:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-refresh.spinning svg {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== Loading Overlay ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 20, 25, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 0.3s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  margin-top: 16px;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ===== Main Content ===== */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px;
}

/* ===== Section ===== */
.section {
  margin-bottom: 24px;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.section-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ===== TOP5 Stock Cards ===== */
.top-stocks-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.stock-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.stock-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-border);
  transition: background var(--transition-fast);
}

.stock-card:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.stock-card.active {
  border-color: var(--color-accent);
}

.stock-card.active::before {
  background: var(--color-accent);
}

.stock-card-rank {
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
}

.stock-card-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.stock-card-code {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.stock-card-price {
  font-size: 1.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}

.stock-card-change {
  font-size: 0.85rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  margin-bottom: 12px;
}

.stock-card-price.rise, .stock-card-change.rise {
  color: var(--color-rise);
}

.stock-card-price.fall, .stock-card-change.fall {
  color: var(--color-fall);
}

.stock-card-score {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid;
}

.score-badge.high {
  color: var(--color-rise);
  border-color: var(--color-rise);
  background: var(--color-rise-bg);
}

.score-badge.mid {
  color: var(--color-warning);
  border-color: var(--color-warning);
  background: rgba(240, 165, 0, 0.1);
}

.score-badge.low {
  color: var(--color-text-muted);
  border-color: var(--color-text-muted);
  background: rgba(90, 100, 119, 0.1);
}

.score-label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.stock-card-reason {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Detail Section ===== */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
}

.detail-left, .detail-right {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.detail-stock-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.detail-code {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.detail-price {
  font-size: 1.2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.detail-change {
  font-size: 0.9rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.detail-price.rise, .detail-change.rise {
  color: var(--color-rise);
}

.detail-price.fall, .detail-change.fall {
  color: var(--color-fall);
}

.indicator-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.chart-container {
  width: 100%;
}

.northbound-info {
  margin-top: 12px;
  padding: 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.northbound-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 0.8rem;
}

.northbound-item + .northbound-item {
  border-top: 1px solid var(--color-border);
}

.northbound-label {
  color: var(--color-text-secondary);
}

.northbound-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.northbound-value.rise {
  color: var(--color-rise);
}

.northbound-value.fall {
  color: var(--color-fall);
}

/* ===== Score Section ===== */
.total-score {
  display: flex;
  align-items: center;
  gap: 8px;
}

.total-score-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.total-score-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-rise);
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.score-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
}

.score-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.score-item-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.score-item-value {
  font-size: 1.1rem;
  font-weight: 700;
}

.score-item-value.high { color: var(--color-rise); }
.score-item-value.mid { color: var(--color-warning); }
.score-item-value.low { color: var(--color-text-muted); }

.score-item-weight {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.score-bar-bg {
  height: 6px;
  background: var(--color-bg);
  border-radius: 3px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

.score-bar-fill.high { background: var(--color-rise); }
.score-bar-fill.mid { background: var(--color-warning); }
.score-bar-fill.low { background: var(--color-text-muted); }

.score-item-desc {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
  line-height: 1.4;
}

.recommendation-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.rec-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.rec-text {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== Market Overview ===== */
.market-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.market-chart-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
}

.market-chart-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

/* ===== Footer ===== */
.footer {
  padding: 20px 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== Skeleton Loading ===== */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-card) 25%, var(--color-bg-hover) 50%, var(--color-bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}