/* KOSPI Chaebol Dashboard - Modern Financial Terminal Stylesheet */
:root {
  --bg-primary: #0a0f1d;
  --bg-card: #131d31;
  --bg-card-hover: #19253d;
  --bg-input: #1a2742;
  --border-color: #233354;
  --border-light: #2d416b;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* Series Palette */
  --c-kospi: #3b82f6;      /* Blue */
  --c-samsung: #f97316;    /* Orange */
  --c-big4: #eab308;       /* Amber */
  --c-all: #10b981;        /* Emerald */

  /* Conglomerate Palette */
  --c-grp-samsung: #3b82f6;
  --c-grp-sk: #f97316;
  --c-grp-hyundai: #ef4444;
  --c-grp-lg: #ec4899;
  --c-grp-hanwha: #06b6d4;
  --c-grp-posco: #8b5cf6;
  
  --c-pos: #10b981;
  --c-neg: #f43f5e;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.header-left {
  flex: 1;
}

.badge-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-pos);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-input);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.tag-accent {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.4);
}

.tag-dim {
  color: var(--text-dim);
}

h1 {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 6px;
}

.subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
  max-width: 820px;
}

/* Horizon Controls */
.horizon-toggle {
  display: inline-flex;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}

.horizon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.horizon-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.horizon-btn.active {
  background: var(--c-kospi);
  color: #fff;
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.4);
}

/* Dashboard Content */
.dashboard-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 18px 20px;
  transition: transform 0.15s, border-color 0.15s;
}

.kpi-card:hover {
  border-color: var(--border-light);
  transform: translateY(-1px);
}

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

.kpi-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.kpi-badge {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.badge-kospi { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.badge-samsung { background: rgba(249, 115, 22, 0.2); color: #fdba74; }
.badge-big4 { background: rgba(234, 179, 8, 0.2); color: #fde047; }
.badge-all { background: rgba(16, 185, 129, 0.2); color: #86efac; }

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 4px;
}

.kpi-sub {
  font-size: 0.85rem;
  font-weight: 600;
}

.card-kospi { border-left: 4px solid var(--c-kospi); }
.card-samsung { border-left: 4px solid var(--c-samsung); }
.card-big4 { border-left: 4px solid var(--c-big4); }
.card-all { border-left: 4px solid var(--c-all); }

/* Chart Cards */
.chart-card, .table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 22px 24px;
}

.chart-card-header, .table-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.chart-card-header h2, .table-card-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.chart-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Toggles & Legend */
.series-toggles, .legend-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.toggle-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s;
}

.toggle-pill:hover {
  border-color: var(--border-light);
}

.toggle-pill input {
  cursor: pointer;
}

.color-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.dot-kospi { background: var(--c-kospi); }
.dot-samsung { background: var(--c-samsung); }
.dot-big4 { background: var(--c-big4); }
.dot-all { background: var(--c-all); }

.dot-grp-samsung { background: var(--c-grp-samsung); }
.dot-grp-sk { background: var(--c-grp-sk); }
.dot-grp-hyundai { background: var(--c-grp-hyundai); }
.dot-grp-lg { background: var(--c-grp-lg); }
.dot-grp-hanwha { background: var(--c-grp-hanwha); }
.dot-grp-posco { background: var(--c-grp-posco); }

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-input);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.legend-item span {
  font-weight: 600;
  color: #fff;
}

/* Canvas Container */
.canvas-container {
  position: relative;
  width: 100%;
  height: 420px;
}

.canvas-weights {
  height: 280px;
}

canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

/* Tooltip */
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.78rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  z-index: 10;
  transition: opacity 0.1s ease;
  min-width: 200px;
}

.chart-tooltip.hidden {
  opacity: 0;
}

.tooltip-title {
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 4px;
  margin-bottom: 6px;
}

.tooltip-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3px;
  gap: 12px;
}

.tooltip-row span {
  color: var(--text-muted);
}

.tooltip-row strong {
  color: #fff;
  font-weight: 600;
}

/* Group Filter Buttons */
.group-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.group-btn {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.group-btn:hover {
  color: #fff;
  border-color: var(--border-light);
}

.group-btn.active {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border-color: var(--c-kospi);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  text-align: left;
}

th {
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.stock-cell {
  display: flex;
  flex-direction: column;
}

.stock-name {
  font-weight: 600;
  color: #fff;
}

.stock-code {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.group-pill {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  display: inline-block;
}

.grp-Samsung { background: rgba(59, 130, 246, 0.15); color: #93c5fd; }
.grp-SK { background: rgba(249, 115, 22, 0.15); color: #fdba74; }
.grp-Hyundai { background: rgba(239, 68, 68, 0.15); color: #fca5a5; }
.grp-LG { background: rgba(236, 72, 153, 0.15); color: #f9a8d4; }
.grp-Hanwha { background: rgba(6, 182, 212, 0.15); color: #67e8f9; }
.grp-POSCO { background: rgba(139, 92, 246, 0.15); color: #c4b5fd; }

.ret-pos { color: var(--c-pos) !important; font-weight: 600; }
.ret-neg { color: var(--c-neg) !important; font-weight: 600; }

.sparkline-svg {
  width: 90px;
  height: 24px;
  display: block;
}

.loading-cell {
  text-align: center;
  color: var(--text-dim);
  padding: 32px 0;
}

/* Methodology Section */
.methodology-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 22px 24px;
}

.methodology-section h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.methodology-section p {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.formula-box {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 16px;
  margin-bottom: 12px;
  overflow-x: auto;
}

.formula-box code {
  color: #38bdf8;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.86rem;
}

.formula-sep {
  color: var(--text-dim);
}

.methodology-note {
  font-size: 0.78rem !important;
  color: var(--text-dim) !important;
  margin-bottom: 0 !important;
}

/* Footer */
.app-footer {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 12px;
}

.app-footer code {
  color: var(--text-muted);
}

@media (max-width: 860px) {
  .app-header {
    flex-direction: column;
    gap: 16px;
  }
  .canvas-container {
    height: 320px;
  }
}