:root {
  color-scheme: light;
  --bg: #f5efe2;
  --surface: #fffdf8;
  --surface-strong: #efe4cb;
  --text: #1b2a2f;
  --muted: #58656b;
  --accent: #264653;
  --accent-2: #e76f51;
  --border: #d8ddd4;
  --shadow: 0 18px 48px rgba(38, 70, 83, 0.12);
  --shadow-sm: 0 2px 8px rgba(38, 70, 83, 0.08);
  --shadow-hover: 0 8px 24px rgba(38, 70, 83, 0.15);

  /* Risk colors */
  --risk-low: #2a9d8f;
  --risk-low-bg: rgba(42, 157, 143, 0.12);
  --risk-moderate: #e9c46a;
  --risk-moderate-bg: rgba(233, 196, 106, 0.15);
  --risk-high: #e76f51;
  --risk-high-bg: rgba(231, 111, 81, 0.15);
  --risk-critical: #8f1d14;
  --risk-critical-bg: rgba(143, 29, 20, 0.12);

  /* Typography */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;

  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(231, 111, 81, 0.18), transparent 26%),
    linear-gradient(180deg, #f6f0e7 0%, #f4efe6 42%, #edf2ec 100%);
  color: var(--text);
}

#root {
  min-height: 100vh;
}

.app-shell {
  padding: 32px 20px 48px;
}

/* Hero Section */
.hero {
  max-width: 1200px;
  margin: 0 auto 24px;
  padding: 28px 32px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  background: rgba(255, 253, 248, 0.78);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 700;
}

.hero h1 {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: clamp(2rem, 4vw, 3.6rem);
}

.hero-copy {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.05rem;
}

/* Layout */
.layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 24px;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Cards */
.card {
  background: rgba(255, 253, 248, 0.95);
  border: 1px solid rgba(38, 70, 83, 0.08);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-hover);
}

.card h2 {
  margin: 0 0 20px 0;
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.01em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* Model Selector */
.model-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  margin-bottom: 20px;
  background: rgba(38, 70, 83, 0.04);
  border-radius: 12px;
  border: 1px solid rgba(38, 70, 83, 0.06);
}

.model-selector__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), #33658a);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
  flex-shrink: 0;
}

.model-selector__label {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  font-size: var(--text-sm);
  color: var(--muted);
  flex-direction: row;
}

.model-selector__select {
  flex: 1;
  max-width: 220px;
  padding: 8px 12px;
  border-radius: 8px;
}

.model-selector--disabled {
  opacity: 0.6;
}

.model-selector__status {
  font-size: var(--text-sm);
  color: var(--muted);
  font-style: italic;
}

/* Forms */
.scenario-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--muted);
}

input,
select,
button {
  font: inherit;
}

input,
select {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(38, 70, 83, 0.1);
}

/* Primary Button */
.primary-button {
  border: none;
  border-radius: 12px;
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--accent) 0%, #33658a 100%);
  color: #fff;
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(38, 70, 83, 0.2);
}

.primary-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(38, 70, 83, 0.25);
}

.primary-button:active:not(:disabled) {
  transform: translateY(0);
}

.primary-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Metric Grid */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}

.metric-item {
  padding: 16px;
  background: rgba(38, 70, 83, 0.02);
  border-radius: 12px;
  border: 1px solid transparent;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.metric-item:hover {
  border-color: var(--border);
  background: rgba(38, 70, 83, 0.04);
}

.metric-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.metric-value {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text);
}

/* Risk Indicators */
.risk-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: var(--text-sm);
}

.risk-indicator--low {
  background: var(--risk-low-bg);
  color: #1d7a6f;
}

.risk-indicator--moderate {
  background: var(--risk-moderate-bg);
  color: #9a7b20;
}

.risk-indicator--high {
  background: var(--risk-high-bg);
  color: #c44a32;
}

.risk-indicator--critical {
  background: var(--risk-critical-bg);
  color: var(--risk-critical);
}

/* Disclaimer and meta text */
.disclaimer,
.drivers,
.summary-provider {
  margin-top: 18px;
  color: var(--muted);
  font-size: var(--text-sm);
}

/* Summary Card */
.summary-text {
  line-height: 1.6;
  color: var(--text);
}

.summary-meta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.summary-provider {
  margin: 0 0 8px 0;
}

.summary-provider strong {
  color: var(--accent);
}

.fallback-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  font-size: var(--text-xs);
  font-weight: 500;
  background: rgba(231, 111, 81, 0.1);
  color: var(--accent-2);
  border-radius: 4px;
}

.drivers {
  margin: 0;
}

/* Driver List */
.driver-list {
  display: grid;
  gap: 16px;
}

.driver-item {
  padding: 16px 18px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(38, 70, 83, 0.03) 0%, rgba(38, 70, 83, 0.01) 100%);
  border: 1px solid rgba(38, 70, 83, 0.06);
  transition: all 0.2s ease;
}

.driver-item:hover {
  background: rgba(38, 70, 83, 0.05);
  border-color: rgba(38, 70, 83, 0.1);
}

.driver-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.driver-header strong {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text);
}

.driver-direction {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 6px;
}

.driver-direction--increases {
  background: var(--risk-high-bg);
  color: #c44a32;
}

.driver-direction--decreases {
  background: var(--risk-low-bg);
  color: #1d7a6f;
}

.driver-bar-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: rgba(38, 70, 83, 0.1);
  overflow: hidden;
}

.driver-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #e76f51, #f4a261);
}

.driver-explanation {
  margin: 0 0 16px;
  padding: 12px;
  background: rgba(38, 70, 83, 0.04);
  border-radius: 8px;
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.5;
}

.driver-metrics {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
  color: var(--muted);
  font-size: var(--text-sm);
}

.impact--positive {
  color: var(--risk-low);
  font-weight: 500;
}

.impact--negative {
  color: var(--risk-high);
  font-weight: 500;
}

/* Loading and State Cards */
.loading-spinner,
.empty-state,
.error-card {
  display: grid;
  place-items: center;
  min-height: 160px;
  text-align: center;
}

.empty-state {
  color: var(--muted);
  font-size: var(--text-sm);
}

.error-card {
  color: #8f1d14;
  background: rgba(143, 29, 20, 0.05);
  border-color: rgba(143, 29, 20, 0.1);
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  gap: 8px;
  max-width: 1200px;
  margin: 0 auto 24px;
  padding: 0 4px;
  border-bottom: 1px solid var(--border);
}

.tab-button {
  padding: 12px 24px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s ease;
}

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

.tab-button--active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Admin Panel */
.admin-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 900px;
}

.layout--single {
  grid-template-columns: 1fr;
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 24px;
}

.model-info {
  margin-bottom: 24px;
}

.section-title {
  margin: 20px 0 12px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-item--highlight {
  background: rgba(42, 157, 143, 0.08);
  border-color: rgba(42, 157, 143, 0.15);
}

.features-details {
  margin-top: 16px;
  font-size: var(--text-sm);
}

.features-details summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 500;
}

.features-details summary:hover {
  color: var(--text);
}

.features-list {
  margin: 8px 0 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: var(--text-xs);
  columns: 2;
  column-gap: 24px;
}

.features-list li {
  margin-bottom: 4px;
}

.train-section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.train-note {
  margin-top: 12px;
  font-size: var(--text-xs);
  color: var(--muted);
}

.train-result {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: var(--text-sm);
}

.train-result--success {
  background: var(--risk-low-bg);
  color: #1d7a6f;
}

.train-result--error {
  background: var(--risk-high-bg);
  color: #c44a32;
}

.data-status-card .metric-item--highlight .metric-value {
  color: #1d7a6f;
}

.warning-text {
  margin-top: 12px;
  padding: 12px;
  background: rgba(233, 196, 106, 0.15);
  border-radius: 8px;
  color: #9a7b20;
  font-size: var(--text-sm);
}

.info-card {
  background: rgba(38, 70, 83, 0.02);
}

.info-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.8;
}

.info-list strong {
  color: var(--text);
}

.loading-text,
.empty-state-text {
  color: var(--muted);
  font-size: var(--text-sm);
  text-align: center;
  padding: 24px 0;
}

/* Responsive */
@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .model-selector__label {
    flex-wrap: wrap;
  }

  .model-selector__select {
    max-width: none;
    width: 100%;
  }

  .models-grid {
    grid-template-columns: 1fr;
  }

  .features-list {
    columns: 1;
  }
}

/* Upload Section */
.upload-section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.upload-note {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: var(--text-sm);
}

.upload-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.file-input {
  flex: 1;
  min-width: 200px;
  padding: 8px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: rgba(38, 70, 83, 0.02);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.file-input:hover {
  border-color: var(--accent);
  background: rgba(38, 70, 83, 0.04);
}

.file-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.upload-status {
  font-size: var(--text-sm);
  color: var(--accent);
  font-weight: 500;
}

.secondary-button {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 18px;
  background: #fff;
  color: var(--text);
  font-weight: 500;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.secondary-button:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(38, 70, 83, 0.04);
}

.secondary-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.reset-button {
  margin-top: 12px;
}

/* Export Section */
.export-section {
  margin-top: 24px;
  padding: 20px;
  background: rgba(255, 253, 248, 0.95);
  border: 1px solid rgba(38, 70, 83, 0.08);
  border-radius: 16px;
  text-align: center;
}

.export-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 2px solid var(--accent);
  border-radius: 10px;
  background: transparent;
  color: var(--accent);
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.export-button:hover:not(:disabled) {
  background: var(--accent);
  color: #fff;
}

.export-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.export-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: var(--text-sm);
}