/* Reset & Variables */
:root {
  /* Brand Palette - Professional Navy & Blue */
  --color-brand: #0f172a; /* Slate 900 */
  --color-primary: #2563eb; /* Blue 600 */
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #eff6ff;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-danger: #ef4444;
  --color-danger-bg: #fef2f2;

  /* Neutrals */
  --color-bg: #f8fafc; /* Slate 50 */
  --color-surface: #ffffff;
  --color-text-main: #1e293b; /* Slate 800 */
  --color-text-muted: #64748b; /* Slate 500 */
  --color-border: #e2e8f0; /* Slate 200 */

  /* Measurements */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Background Decoration */
.app-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -1;
  background: 
    radial-gradient(circle at 15% 50%, rgba(37, 99, 235, 0.08), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.08), transparent 25%);
  pointer-events: none;
}

/* Typography Helpers */
h1, h2, h3, h4, p {
  margin: 0;
}

button {
  font-family: inherit;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Topbar */
.topbar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 60px;
}

.topbar-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-chip {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--color-text-muted);
  background: #fff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-brand);
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: 50%;
}

/* Main Layout */
.page-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 16px 80px; /* Bottom padding for scroll space */
}

/* Panels */
.view-panel {
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Setup Panel */
.setup-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel-header {
  text-align: center;
  padding: 20px 0 10px;
}

.header-icon-bg {
  width: 64px;
  height: 64px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.setup-panel h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-brand);
  margin-bottom: 8px;
}

.subtitle {
  color: var(--color-text-muted);
  font-size: 16px;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 640px) {
  .info-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.2s;
}

@media (min-width: 640px) {
  .info-card {
    flex-direction: column;
    text-align: center;
    padding: 24px 16px;
    align-items: center;
  }
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-main);
  flex-shrink: 0;
}

.card-content h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}

.card-content p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Draft Alert */
.draft-alert {
  background: var(--color-warning-bg);
  border: 1px solid #fcd34d;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.alert-icon {
  color: var(--color-warning);
  flex-shrink: 0;
  margin-top: 2px;
}

.alert-content {
  flex: 1;
}

.alert-content span {
  display: block;
  font-size: 14px;
  color: #92400e;
  margin-bottom: 12px;
  font-weight: 500;
}

.alert-buttons {
  display: flex;
  gap: 8px;
}

/* Setup Footer */
.setup-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 10px;
}

@media (min-width: 640px) {
  .setup-footer {
    flex-direction: row;
    justify-content: center;
  }
}

/* Exam Panel */
.exam-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.exam-header-mobile {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.badge {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.badge.subtle {
  background: var(--color-border);
  color: var(--color-text-muted);
}

.timer-display {
  font-family: 'Roboto Mono', monospace;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: var(--radius-full);
}

.timer-icon {
  font-size: 10px;
  color: var(--color-danger);
  animation: pulse 2s infinite;
}

.timer-divider {
  opacity: 0.3;
}

.timer-target {
  color: var(--color-text-muted);
  font-size: 13px;
}

.exam-main-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.topic-heading {
  font-size: 14px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.question-display {
  margin-bottom: 24px;
}

#question-text {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.4;
  margin-bottom: 12px;
}

.lang-toggle {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 13px;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Prep Box */
.prep-card {
  background: #fdf2f8; /* Pink/Rose tint for prep */
  border: 1px solid #fbcfe8;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.prep-header {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #db2777;
  font-weight: 600;
  margin-bottom: 8px;
}

.prep-body {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.prep-body p {
  font-size: 14px;
  color: #be185d;
}

#prep-timer {
  font-size: 24px;
  font-weight: 700;
  color: #db2777;
  font-family: 'Roboto Mono', monospace;
}

/* Controls */
.controls-area {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 16px;
}

.recording-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-danger);
  font-weight: 600;
  font-size: 14px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
  100% { opacity: 1; transform: scale(1); }
}

.controls-right {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.progress-text {
  font-size: 13px;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

/* Insights */
.insights-container {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
}

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

.insight-header h3 {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sync-status {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-border);
  color: var(--color-text-muted);
}

.sync-status.good {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.sync-status.bad {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.insight-dashboard {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.insight-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px;
}

.insight-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.insight-item h4 {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.insight-item p, .insight-item ul {
  font-size: 13px;
  color: var(--color-text-main);
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Report Panel */
.report-header-sticky {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  position: sticky;
  top: 60px; /* Below topbar */
  background: var(--color-bg);
  padding: 10px 0;
  z-index: 90;
}

.brand-small {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-brand);
}

.loading-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-muted);
}

.loader {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.score-card-hero {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.score-label {
  font-size: 14px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.score-value {
  font-size: 56px;
  font-weight: 800;
  color: var(--color-brand);
  line-height: 1;
  margin-bottom: 20px;
}

.criteria-grid-compact {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  text-align: left;
}

.criteria-card {
  background: var(--color-bg);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.criteria-card p {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.criteria-card strong {
  font-size: 18px;
  color: var(--color-text-main);
}

.report-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .report-columns {
    grid-template-columns: 1fr 1fr;
  }
}

.report-section h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  margin-bottom: 12px;
  color: var(--color-brand);
}

.bullet-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bullet-list li {
  margin-bottom: 8px;
  padding-left: 12px;
  position: relative;
  font-size: 14px;
}

.bullet-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

.warning-list li::before { color: var(--color-warning); }
.success-list li::before { color: var(--color-success); }

/* Accordion */
.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion-item {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-item summary {
  padding: 14px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  list-style: none;
  background: var(--color-surface);
  transition: background 0.1s;
}

.accordion-item summary:hover {
  background: #f9fafb;
}

.accordion-content {
  padding: 16px;
  border-top: 1px solid var(--color-border);
  background: #fdfdfd;
  font-size: 14px;
}

.accordion-content p {
  margin-bottom: 8px;
}

.accordion-content strong {
  display: block;
  margin-top: 12px;
  margin-bottom: 4px;
  color: var(--color-text-muted);
  font-size: 12px;
  text-transform: uppercase;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}

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

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: white;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg);
  border-color: #cbd5e1;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
}

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

.btn-ghost:hover {
  background: rgba(0,0,0,0.05);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

th, td {
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  padding: 8px 6px;
  font-size: 13px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #1e293b;
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

@keyframes slideUp {
  from { transform: translate(-50%, 20px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}