/* ========== Design Tokens ========== */
:root {
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 300ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-wide: 1400px;
}

/* ========== Light Mode ========== */
:root, [data-theme="light"] {
  --color-bg:             #f5f5f0;
  --color-surface:        #ffffff;
  --color-surface-2:      #fafaf7;
  --color-surface-offset: #eeede8;
  --color-divider:        #e0ddd8;
  --color-border:         #d4d1ca;

  --color-text:           #1a1a18;
  --color-text-muted:     #6b6b66;
  --color-text-faint:     #a3a29d;
  --color-text-inverse:   #f9f8f4;

  --color-primary:        #0f6f5c;
  --color-primary-hover:  #0b5647;
  --color-primary-light:  #e8f5f0;
  --color-primary-muted:  #0f6f5c22;

  --color-accent-blue:    #2563eb;
  --color-accent-purple:  #7c3aed;
  --color-accent-orange:  #ea580c;
  --color-accent-rose:    #e11d48;
  --color-accent-teal:    #0d9488;
  --color-accent-amber:   #d97706;

  --color-success: #16a34a;
  --color-error:   #dc2626;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.08);

  --chart-1: #0f6f5c;
  --chart-2: #2563eb;
  --chart-3: #7c3aed;
  --chart-4: #ea580c;
  --chart-5: #e11d48;
  --chart-6: #0d9488;
  --chart-7: #d97706;
  --chart-8: #4f46e5;
}

/* ========== Dark Mode ========== */
[data-theme="dark"] {
  --color-bg:             #111110;
  --color-surface:        #1a1a18;
  --color-surface-2:      #222220;
  --color-surface-offset: #161615;
  --color-divider:        #2a2a28;
  --color-border:         #333331;

  --color-text:           #e5e5e0;
  --color-text-muted:     #8a8a85;
  --color-text-faint:     #555553;
  --color-text-inverse:   #1a1a18;

  --color-primary:        #34d399;
  --color-primary-hover:  #6ee7b7;
  --color-primary-light:  #34d39915;
  --color-primary-muted:  #34d39918;

  --color-accent-blue:    #60a5fa;
  --color-accent-purple:  #a78bfa;
  --color-accent-orange:  #fb923c;
  --color-accent-rose:    #fb7185;
  --color-accent-teal:    #2dd4bf;
  --color-accent-amber:   #fbbf24;

  --color-success: #4ade80;
  --color-error:   #f87171;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);

  --chart-1: #34d399;
  --chart-2: #60a5fa;
  --chart-3: #a78bfa;
  --chart-4: #fb923c;
  --chart-5: #fb7185;
  --chart-6: #2dd4bf;
  --chart-7: #fbbf24;
  --chart-8: #818cf8;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #111110;
    --color-surface:        #1a1a18;
    --color-surface-2:      #222220;
    --color-surface-offset: #161615;
    --color-divider:        #2a2a28;
    --color-border:         #333331;
    --color-text:           #e5e5e0;
    --color-text-muted:     #8a8a85;
    --color-text-faint:     #555553;
    --color-text-inverse:   #1a1a18;
    --color-primary:        #34d399;
    --color-primary-hover:  #6ee7b7;
    --color-primary-light:  #34d39915;
    --color-primary-muted:  #34d39918;
    --color-accent-blue:    #60a5fa;
    --color-accent-purple:  #a78bfa;
    --color-accent-orange:  #fb923c;
    --color-accent-rose:    #fb7185;
    --color-accent-teal:    #2dd4bf;
    --color-accent-amber:   #fbbf24;
    --color-success: #4ade80;
    --color-error:   #f87171;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
    --chart-1: #34d399;
    --chart-2: #60a5fa;
    --chart-3: #a78bfa;
    --chart-4: #fb923c;
    --chart-5: #fb7185;
    --chart-6: #2dd4bf;
    --chart-7: #fbbf24;
    --chart-8: #818cf8;
  }
}

/* ========== Layout ========== */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
  backdrop-filter: blur(12px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.back-btn:hover { background: var(--color-surface-offset); color: var(--color-text); }

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  color: var(--color-text);
}
.logo-text {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-center {
  flex: 1;
  max-width: 480px;
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  gap: var(--space-2);
  transition: border-color var(--transition-interactive);
}
.search-wrapper:focus-within {
  border-color: var(--color-primary);
}
.search-icon { flex-shrink: 0; color: var(--color-text-faint); }
.search-wrapper input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.search-wrapper input::placeholder { color: var(--color-text-faint); }

.search-results {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 320px;
  overflow-y: auto;
  display: none;
  z-index: 200;
}
.search-results.active { display: block; }
.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  font-size: var(--text-sm);
  border-bottom: 1px solid var(--color-divider);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--color-primary-light); }
.search-result-rank {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  min-width: 28px;
}
.search-result-name { font-weight: 600; }
.search-result-ticker { color: var(--color-text-muted); margin-left: auto; font-family: var(--font-mono); font-size: var(--text-xs); }

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
}
.nav-btn:hover { background: var(--color-surface-offset); color: var(--color-text); border-color: var(--color-border); }
.nav-btn.active { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }

[data-theme-toggle] {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
[data-theme-toggle]:hover { background: var(--color-surface-offset); color: var(--color-text); }

/* ========== Main ========== */
.app-main {
  flex: 1;
  padding: var(--space-6);
  max-width: var(--content-wide);
  width: 100%;
  margin: 0 auto;
}

.view { display: none; }
.view.active { display: block; animation: fadeIn 250ms ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== Overview ========== */
.view-header {
  margin-bottom: var(--space-8);
}
.view-header h1 {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-1);
}
.subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.filter-chip {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.filter-chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-chip.active { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }

/* ========== Company Grid ========== */
.companies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.company-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.company-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.company-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}
.company-card:hover::before { transform: scaleX(1); }

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}
.card-rank {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
}
.card-sector {
  font-size: var(--text-xs);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  font-weight: 500;
}

.card-company {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
  line-height: 1.2;
}
.card-ticker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.card-mcap {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.card-mcap-value {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.card-mcap-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.card-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-3);
}
.card-metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
}
.card-metric-name {
  color: var(--color-text-muted);
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.card-metric-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.card-metric-count {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-1);
}

/* ========== Detail View ========== */
.detail-header {
  margin-bottom: var(--space-8);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.detail-company-info h1 {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
}
.detail-meta {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}
.detail-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.detail-meta-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}
.detail-meta-value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: var(--space-6);
}

.chart-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: box-shadow var(--transition-smooth);
}
.chart-card:hover { box-shadow: var(--shadow-md); }

.chart-title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.chart-unit {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}
.chart-container {
  position: relative;
  height: 260px;
}
.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}
.chart-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}
.chart-growth {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.chart-growth.positive { color: var(--color-success); }
.chart-growth.negative { color: var(--color-error); }

.chart-compare-btn {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}
.chart-compare-btn:hover { background: var(--color-primary-light); }

/* ========== Compare View ========== */
.compare-header {
  margin-bottom: var(--space-6);
}
.compare-header h1 {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-1);
}

.compare-content {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-6);
  min-height: 500px;
}

.compare-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-height: 70vh;
  overflow-y: auto;
  padding-right: var(--space-2);
}

.compare-category {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  text-align: left;
}
.compare-category:hover { border-color: var(--color-primary); color: var(--color-text); }
.compare-category.active { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }
.compare-category-count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  opacity: 0.7;
  margin-left: var(--space-2);
}

.compare-main {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-height: 400px;
}

.compare-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 300px;
  gap: var(--space-4);
  color: var(--color-text-faint);
  text-align: center;
  font-size: var(--text-sm);
}

.compare-chart-wrapper {
  position: relative;
  height: 400px;
}

.compare-chart-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.compare-chart-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* ========== Footer ========== */
.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
  gap: var(--space-2);
}
.app-footer a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.app-footer a:hover { color: var(--color-primary); }

/* ========== Country Flags ========== */
.flag {
  display: inline-block;
  font-size: 1.1em;
  line-height: 1;
  vertical-align: middle;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .app-header {
    padding: var(--space-2) var(--space-3);
    flex-wrap: wrap;
  }
  .header-center { order: 3; flex: 0 0 100%; max-width: 100%; }
  .nav-btn span { display: none; }
  .app-main { padding: var(--space-4); }
  .companies-grid { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
  .compare-content { grid-template-columns: 1fr; }
  .compare-sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    max-height: none;
    overflow-y: visible;
    padding-right: 0;
  }
  .compare-category { flex: 0 0 auto; }
  .logo-text { font-size: var(--text-base); }
}