:root {
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-surface-alt: #f8fafc;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-text-subtle: #64748b;

  --color-primary: #15803d;
  --color-primary-dark: #166534;
  --color-primary-light: #dcfce7;
  --color-primary-text: #14532d;

  --color-accent: #0284c7;
  --color-accent-light: #e0f2fe;

  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-danger-text: #991b1b;

  --color-warning: #d97706;
  --color-warning-light: #fef3c7;
  --color-warning-text: #92400e;

  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-success-text: #166534;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

html, body {
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.app-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 2rem;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.territory-selectors {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.selector-group {
  display: flex;
  flex-direction: column;
}

.selector-group label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-subtle);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

select, input[type="number"], input[type="text"] {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--color-text-main);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

select:focus, input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

/* Navigation Tabs */
.nav-tabs-wrapper {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.nav-tabs {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
  padding: 0 2rem;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

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

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

/* Main Container */
.main-content {
  max-width: 1400px;
  margin: 1.5rem auto;
  padding: 0 2rem 3rem 2rem;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Layout Cards & Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* Metric Display Cards */
.metric-box {
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.metric-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background-color: var(--color-success-light);
  color: var(--color-success-text);
}

.badge-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning-text);
}

.badge-danger {
  background-color: var(--color-danger-light);
  color: var(--color-danger-text);
}

.badge-accent {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}

/* Traffic Light Indicator */
.traffic-light {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
}

.traffic-light.light-bajo {
  background-color: var(--color-success-light);
  border: 1px solid #bbf7d0;
}

.traffic-light.light-medio {
  background-color: var(--color-warning-light);
  border: 1px solid #fde68a;
}

.traffic-light.light-alto {
  background-color: var(--color-danger-light);
  border: 1px solid #fecaca;
}

.light-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
}

.light-bajo .light-circle {
  background-color: var(--color-success);
  box-shadow: 0 0 12px rgba(22, 163, 74, 0.4);
}

.light-medio .light-circle {
  background-color: var(--color-warning);
  box-shadow: 0 0 12px rgba(217, 119, 6, 0.4);
}

.light-alto .light-circle {
  background-color: var(--color-danger);
  box-shadow: 0 0 12px rgba(220, 38, 38, 0.4);
}

.traffic-text h4 {
  font-size: 1.125rem;
  font-weight: 700;
}

.traffic-text p {
  font-size: 0.875rem;
}

/* Forms & Sliders */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.form-group label span.val-display {
  color: var(--color-primary-dark);
  font-family: var(--font-mono);
}

input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-main);
}

.btn-outline:hover {
  background-color: var(--color-surface-alt);
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

thead {
  background-color: var(--color-surface-alt);
  border-bottom: 2px solid var(--color-border);
}

th {
  padding: 0.75rem 1rem;
  font-weight: 700;
  color: var(--color-text-main);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

tr:hover td {
  background-color: var(--color-surface-alt);
}

tr.winner-row td {
  background-color: #f0fdf4;
  font-weight: 600;
  color: var(--color-text-main);
}

/* Confusion Matrix Display */
.matrix-grid {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
}

.matrix-cell {
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  text-align: center;
}

.matrix-cell-val {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.matrix-cell-sub {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
}

/* Sub-nav Buttons within Panels */
.subnav-buttons {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.subnav-btn {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.subnav-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.subnav-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

/* Feature Importance Cards */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  max-width: 100%;
}

.feature-item {
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.875rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.feature-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.feature-title-wrap {
  flex: 1 1 180px;
  min-width: 0;
}

.feature-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-main);
  overflow-wrap: break-word;
  word-break: break-word;
}

.feature-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  background-color: var(--color-border);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  margin-top: 0.25rem;
  overflow-wrap: anywhere;
  word-break: break-all;
  max-width: 100%;
}

.feature-pct {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 0.875rem;
  white-space: nowrap;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 0.375rem;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.feature-desc {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
}

/* Documentation Typography */
.prose {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-main);
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary-dark);
}

.prose p {
  margin-bottom: 1rem;
}

.prose ul, .prose ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.prose li {
  margin-bottom: 0.375rem;
}

.prose code {
  background-color: var(--color-surface-alt);
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  border: 1px solid var(--color-border);
}

.chart-container {
  position: relative;
  width: 100%;
  max-width: 100%;
  height: 320px;
  margin-top: 1rem;
  overflow: hidden;
}

/* Footer */
.app-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html, body {
    overflow-x: hidden;
    width: 100%;
  }

  .app-header {
    padding: 0.75rem 1rem;
    width: 100%;
  }

  .header-container {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .territory-selectors {
    width: 100%;
    flex-direction: column;
    gap: 0.5rem;
  }

  .selector-group {
    width: 100%;
  }

  select {
    width: 100%;
  }

  .main-content {
    padding: 0 0.75rem 2rem 0.75rem;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  .nav-tabs-wrapper {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-tabs {
    padding: 0 0.5rem;
    gap: 0.25rem;
  }

  .tab-btn {
    padding: 0.75rem 0.625rem;
    font-size: 0.8125rem;
  }

  .card {
    padding: 1rem;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .chart-container {
    height: 260px;
    width: 100%;
    max-width: 100%;
  }

  .subnav-buttons {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding-bottom: 0.35rem;
  }

  .subnav-btn {
    flex-shrink: 0;
  }
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 1.05rem;
  }

  .brand-subtitle {
    font-size: 0.75rem;
  }

  .metric-value {
    font-size: 1.25rem;
  }

  .card-title {
    font-size: 1rem;
  }

  .chart-container {
    height: 230px;
  }
}