:root {
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-ai-surface: #f0f9ff;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --border-strong: #cbd5e1;
  --accent-primary: #0284c7;
  --accent-primary-hover: #0369a1;
  --accent-civic: #b91c1c;
  --semantic-positive: #047857;
  --semantic-positive-bg: #ecfdf5;
  --semantic-warning: #b45309;
  --semantic-warning-bg: #fffbeb;
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08);
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* Top Navigation */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-block-end: 1px solid var(--border-light);
}

.nav-container {
  max-width: 820px;
  margin-inline: auto;
  padding-block: 0.75rem;
  padding-inline: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--accent-civic);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.75rem;
  padding-block: 0.2rem;
  padding-inline: 0.45rem;
  border-radius: 5px;
  letter-spacing: 0.04em;
}

.brand-title {
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.progress-pill {
  background-color: var(--bg-subtle);
  padding-block: 0.3rem;
  padding-inline: 0.75rem;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.lang-toggle {
  display: inline-flex;
  background-color: var(--bg-subtle);
  padding: 2px;
  border-radius: 7px;
  border: 1px solid var(--border-light);
}

.lang-btn {
  border: none;
  background: transparent;
  padding-block: 0.25rem;
  padding-inline: 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.lang-btn.active {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Main Container */
.main-container {
  max-width: 820px;
  margin-inline: auto;
  padding-block: 2rem 4rem;
  padding-inline: 1.25rem;
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.75rem;
  margin-block-end: 1.25rem;
}

/* Welcome View */
.hero-title {
  margin-block: 0 0.6rem;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.hero-subtitle {
  margin-block: 0 1.5rem;
  font-size: 1rem;
  color: var(--text-secondary);
}

.how-it-works {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-block-end: 1.5rem;
}

.step-item {
  background-color: var(--bg-page);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.step-number {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.step-text strong {
  display: block;
  font-size: 0.92rem;
  margin-block-end: 0.25rem;
}

.step-text p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.notice-banner {
  background-color: var(--semantic-positive-bg);
  color: var(--semantic-positive);
  padding-block: 0.75rem;
  padding-inline: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  margin-block-end: 1.5rem;
}

.welcome-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

/* Question Card */
.question-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-block-end: 0.9rem;
}

.category-badge {
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding-block: 0.25rem;
  padding-inline: 0.65rem;
  border-radius: 6px;
}

.deadline-meta {
  font-size: 0.84rem;
  color: var(--text-muted);
}

.question-title {
  margin-block: 0 0.55rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.question-prompt {
  margin-block: 0 1.25rem;
  font-size: 1.06rem;
  color: var(--text-primary);
  font-weight: 500;
}

.resolution-box {
  background-color: var(--bg-page);
  border-inline-start: 3px solid var(--border-strong);
  padding-block: 0.75rem;
  padding-inline: 1rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.resolution-header {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-block-end: 0.25rem;
}

.resolution-text {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* Forecast Sliders */
.panel-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 0.4rem;
}

.panel-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.panel-hint {
  margin-block: 0 1.2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.prob-readout {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.prob-number {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.delta-badge {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding-block: 0.15rem;
  padding-inline: 0.5rem;
  border-radius: 6px;
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
}

.slider-wrapper {
  margin-block-end: 1.35rem;
}

.prob-slider {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--border-light);
  outline: none;
  cursor: pointer;
  accent-color: var(--accent-primary);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-block-start: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.locked-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-subtle);
  padding-block: 0.65rem;
  padding-inline: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
}

.mono-value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
}

/* AI Stimulus Card */
.ai-analysis-card {
  background-color: var(--bg-ai-surface);
  border-color: #bae6fd;
}

.ai-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block-end: 1rem;
  margin-block-end: 1rem;
  border-block-end: 1px solid #bae6fd;
}

.ai-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.ai-badge {
  background-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.75rem;
  padding-block: 0.2rem;
  padding-inline: 0.5rem;
  border-radius: 5px;
}

.ai-forecast-box {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  background-color: #ffffff;
  padding-block: 0.4rem;
  padding-inline: 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid #bae6fd;
}

.ai-forecast-label {
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.ai-forecast-number {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.ai-bullets {
  margin: 0;
  padding-inline-start: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.ai-bullets li {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* Posterior Actions */
.posterior-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.primary-submit-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.92rem;
  padding-block: 0.65rem;
  padding-inline: 1.15rem;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.08s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-lg {
  font-size: 1rem;
  padding-block: 0.8rem;
  padding-inline: 1.4rem;
}

.btn-sm {
  font-size: 0.82rem;
  padding-block: 0.35rem;
  padding-inline: 0.75rem;
}

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

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

.btn-secondary {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--border-light);
}

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

.btn-outline:hover {
  background-color: var(--bg-subtle);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-muted);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: 7px;
  padding-block: 0.25rem;
  padding-inline: 0.55rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Summary View */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
  margin-block-end: 1.25rem;
}

.metric-box {
  background-color: var(--bg-page);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.metric-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-block-end: 0.3rem;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.arm-comparison-box {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
  margin-block-end: 1.25rem;
}

.arm-stat {
  background-color: var(--bg-subtle);
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.arm-stat-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.arm-stat-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
}

.debrief-box {
  background-color: var(--semantic-warning-bg);
  color: var(--semantic-warning);
  padding-block: 0.85rem;
  padding-inline: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  margin-block-end: 1.25rem;
}

.debrief-box p {
  margin: 0;
}

.table-responsive {
  overflow-x: auto;
  margin-block-end: 1.5rem;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.results-table th,
.results-table td {
  text-align: start;
  padding-block: 0.65rem;
  padding-inline: 0.75rem;
  border-block-end: 1px solid var(--border-light);
}

.results-table th {
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--bg-page);
}

.arm-pill {
  display: inline-block;
  padding-block: 0.15rem;
  padding-inline: 0.5rem;
  border-radius: 5px;
  font-size: 0.76rem;
  font-weight: 600;
}

.arm-pill-true {
  background-color: var(--semantic-positive-bg);
  color: var(--semantic-positive);
}

.arm-pill-fake {
  background-color: var(--semantic-warning-bg);
  color: var(--semantic-warning);
}

.summary-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

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

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}

.modal-card {
  max-width: 520px;
  width: 100%;
  margin: 0;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.75rem;
}

.modal-header h3 {
  margin: 0;
}

.modal-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-block: 0 1rem;
}

.form-group {
  margin-block-end: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  margin-block-end: 0.4rem;
}

.form-input {
  width: 100%;
  padding-block: 0.6rem;
  padding-inline: 0.75rem;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  font-size: 0.9rem;
}

.validation-msg {
  display: block;
  font-size: 0.8rem;
  margin-block-start: 0.35rem;
  color: var(--semantic-positive);
}

.modal-actions {
  display: flex;
  gap: 0.65rem;
}

/* Intake Form Box */
.intake-box {
  background-color: var(--bg-page);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-block-end: 1.5rem;
}

.intake-title {
  margin-block: 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.intake-field {
  margin-block-end: 1rem;
}

.intake-field:last-of-type {
  margin-block-end: 0;
}

.intake-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-block-end: 0.5rem;
}

.choice-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.choice-pill {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding-block: 0.45rem;
  padding-inline: 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.choice-pill:hover {
  border-color: var(--accent-primary);
}

.choice-pill.selected {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 600;
}

.intake-error {
  margin-block: 0.75rem 0;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent-civic);
}