/* ============================================================
   FairLens AI — Main Stylesheet
   Clean, modern startup-style UI
   ============================================================ */

/* ---- CSS Variables ---- */
:root {
  --bg: #f0f4f8;
  --bg-alt: #e8edf5;
  --white: #ffffff;
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #eff6ff;
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --purple: #8b5cf6;
  --purple-light: #ede9fe;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-dark: #cbd5e1;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.08);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: 64px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 900;
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  display: flex; align-items: center; gap: 8px;
  font-size: 1.2rem; font-weight: 700; color: var(--text);
  text-decoration: none;
}
.nav-logo { font-size: 1.4rem; }
.nav-title .accent { color: var(--primary); }

.nav-steps {
  display: flex; align-items: center; gap: 0;
}
.nav-step {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.82rem; font-weight: 500;
  color: var(--text-muted);
}
.nav-step:hover { background: var(--primary-light); color: var(--primary); }
.nav-step.active { background: var(--primary-light); color: var(--primary); }
.nav-step.completed { color: var(--success); }
.nav-step.completed .step-dot {
  background: var(--success); color: white; font-size: 0.6rem;
}
.step-dot {
  width: 22px; height: 22px;
  background: var(--border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem; font-weight: 700;
  transition: var(--transition);
}
.nav-step.active .step-dot { background: var(--primary); color: white; }
.step-connector {
  width: 20px; height: 1px; background: var(--border);
  margin: 0 2px;
}
.btn-nav-cta {
  background: var(--primary); color: white;
  border: none; border-radius: 20px;
  padding: 8px 20px; font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.btn-nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  display: none;
  min-height: 100vh;
  padding-top: 64px; /* nav height */
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.section.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.page-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ============================================================
   LOADING OVERLAY
   ============================================================ */
.loading-overlay {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.loading-overlay.visible { opacity: 1; pointer-events: all; }

.loading-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  max-width: 380px; width: 90%;
}
.spinner {
  width: 52px; height: 52px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 24px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-title {
  font-size: 1.2rem; font-weight: 700;
  color: var(--text); margin-bottom: 6px;
}
.loading-sub {
  font-size: 0.88rem; color: var(--text-muted); margin-bottom: 28px;
}
.loading-steps {
  display: flex; flex-direction: column; gap: 10px; text-align: left;
}
.load-step {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 0.82rem; color: var(--text-muted);
  transition: var(--transition);
}
.load-step.active {
  background: var(--primary-light);
  color: var(--primary); font-weight: 600;
}
.load-step.done {
  background: var(--success-light);
  color: var(--success); font-weight: 600;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 24px;
  border-radius: 10px;
  font-size: 0.9rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }
.btn-primary {
  background: var(--primary); color: white;
  box-shadow: 0 4px 14px rgba(59,130,246,0.35);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59,130,246,0.45);
}
.btn-success {
  background: var(--success); color: white;
  box-shadow: 0 4px 14px rgba(16,185,129,0.35);
}
.btn-success:hover:not(:disabled) {
  background: #059669;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); }
.btn-ghost {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-alt); color: var(--text); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 12px; }
.btn-full { width: 100%; justify-content: center; margin-top: 18px; }
.btn-back {
  display: flex; align-items: center; gap: 6px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 14px;
  font-size: 0.85rem; color: var(--text-muted);
  cursor: pointer; transition: var(--transition);
}
.btn-back:hover { background: var(--bg-alt); color: var(--text); }
.btn-link {
  background: none; border: none;
  color: var(--primary); font-size: 0.88rem;
  font-weight: 500; cursor: pointer;
  text-decoration: underline;
  padding: 0;
}
.btn-remove {
  background: none; border: none;
  color: var(--text-muted); cursor: pointer;
  font-size: 1.1rem; padding: 4px 8px;
  border-radius: 4px; transition: var(--transition);
}
.btn-remove:hover { background: var(--danger-light); color: var(--danger); }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 14px; border-radius: 20px;
  font-size: 0.82rem; font-weight: 600;
}
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: #92400e; }
.ai-badge {
  display: inline-flex;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  color: white; font-size: 0.68rem; font-weight: 700;
  padding: 2px 8px; border-radius: 20px;
}

/* ============================================================
   PAGE HEADER
   ============================================================ */
.page-header {
  display: flex;
  align-items: center;
  justify-content: center; /* ✅ center content */
  text-align: center;
  margin-bottom: 36px;
  flex-direction: column; /* stack nicely */
}
.page-title {
  font-size: 1.75rem; font-weight: 800;
  color: var(--text); line-height: 1.2;
}
.page-sub {
  font-size: 0.92rem; color: var(--text-muted);
  margin-top: 4px;
}

#explanationText ul {
  padding-left: 18px;
  margin: 8px 0;
}

#explanationText li {
  margin-bottom: 6px;
  line-height: 1.5;
}

#explanationText strong {
  color: #1e293b;
}

.report-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.back-btn {
  background: #f1f5f9;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}

.back-btn:hover {
  background: #e2e8f0;
}
/* ============================================================
   LANDING PAGE
   ============================================================ */
.hero {
  min-height: calc(100vh - 64px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 80px 24px 60px;
  background:
    radial-gradient(ellipse 80% 60% at 50% -5%, rgba(59,130,246,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 90% 80%, rgba(16,185,129,0.08) 0%, transparent 60%);
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-light);
  border: 1px solid rgba(59,130,246,0.25);
  color: var(--primary);
  font-size: 0.82rem; font-weight: 600;
  padding: 6px 16px; border-radius: 20px;
  margin-bottom: 28px;
  animation: fadeUp 0.6s ease both;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800; line-height: 1.1;
  color: var(--text);
  margin-bottom: 22px;
  animation: fadeUp 0.6s 0.1s ease both;
}
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--success));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.12rem; color: var(--text-muted);
  max-width: 580px; line-height: 1.7;
  margin-bottom: 36px;
  animation: fadeUp 0.6s 0.2s ease both;
}
.hero-actions {
  display: flex; gap: 14px; flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 52px;
  animation: fadeUp 0.6s 0.3s ease both;
}
.hero-stats {
  display: flex; align-items: center; gap: 28px;
  padding: 22px 40px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  animation: fadeUp 0.6s 0.4s ease both;
}
.hero-stat { text-align: center; }
.hero-stat strong { display: block; font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.hero-stat span { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; }
.stat-div { width: 1px; height: 32px; background: var(--border); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Flow section */
.flow-section, .features-section {
  max-width: 1100px; margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}
.section-label {
  font-size: 0.72rem; font-weight: 700;
  color: var(--primary); letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.section-title {
  font-size: 2rem; font-weight: 800;
  color: var(--text); margin-bottom: 52px;
}
.flow-steps {
  display: flex; align-items: flex-start;
  justify-content: center; gap: 0;
  flex-wrap: wrap;
}
.flow-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  max-width: 200px;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.flow-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.flow-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 14px;
}
.flow-step-num {
  font-size: 0.72rem; font-weight: 700;
  color: var(--text-light); letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.flow-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.flow-card p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; }
.flow-arrow {
  font-size: 1.4rem; color: var(--text-light);
  padding: 0 12px;
  align-self: center;
  margin-top: -20px;
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px; text-align: left;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: rgba(59,130,246,0.3); }
.feature-icon { font-size: 1.8rem; margin-bottom: 14px; }
.feature-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* Footer */
.landing-footer {
  background: var(--text); color: rgba(255,255,255,0.6);
  text-align: center; padding: 32px 24px;
  font-size: 0.85rem;
}
.footer-brand {
  display: flex; align-items: center; gap: 8px;
  justify-content: center;
  font-size: 1.1rem; font-weight: 700;
  color: white; margin-bottom: 8px;
}

/* ============================================================
   UPLOAD SECTION
   ============================================================ */
.upload-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.drop-zone {
  border: 2px dashed var(--border-dark);
  border-radius: var(--radius);
  margin: 28px;
  padding: 60px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}
.drop-zone.drag-over { transform: scale(1.01); }
.drop-icon { font-size: 3rem; margin-bottom: 16px; }
.drop-zone h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.drop-zone p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 20px; }

.file-selected { padding: 24px 28px 28px; }
.file-info {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  background: var(--success-light);
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}
.file-icon { font-size: 1.8rem; }
.file-details { flex: 1; }
.file-name { display: block; font-weight: 700; font-size: 0.95rem; }
.file-size { font-size: 0.8rem; color: var(--text-muted); }

/* Preview Table */
.dataset-preview { }
.preview-label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); margin-bottom: 10px; }
.preview-table-wrapper { overflow-x: auto; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.preview-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.8rem;
}
.preview-table th {
  background: var(--bg); color: var(--text-muted);
  font-weight: 600; text-align: left;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
}
.preview-table td {
  padding: 9px 14px; border-bottom: 1px solid var(--border);
  color: var(--text);
}
.preview-table tr:last-child td { border-bottom: none; }
.preview-table tr:hover td { background: var(--bg); }

.sample-hint {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem; color: var(--text-muted);
  margin-bottom: 28px;
}
.upload-actions { text-align: center; }
.upload-note { font-size: 0.82rem; color: var(--text-muted); margin-top: 10px; }

/* ============================================================
   RESULTS SECTION
   ============================================================ */
.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.result-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.result-card:hover { box-shadow: var(--shadow); }
.card-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 22px;
}
.card-icon { font-size: 1.3rem; }
.card-header h3 { font-size: 1rem; font-weight: 700; flex: 1; }
.card-tooltip {
  color: var(--text-light); cursor: help;
  font-size: 0.9rem;
}

/* Score Card */
.score-card { grid-column: 1; }
.score-display {
  display: flex; justify-content: center; margin-bottom: 24px;
}
.score-ring-wrapper {
  position: relative; width: 140px; height: 140px;
}
.score-ring {
  width: 140px; height: 140px;
  transform: rotate(-90deg);
}
.ring-bg {
  fill: none; stroke: var(--bg);
  stroke-width: 8;
}
.ring-fill {
  fill: none; stroke: var(--danger);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.2s cubic-bezier(0.4,0,0.2,1),
              stroke 0.3s ease;
}
.score-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.score-number {
  font-size: 2.4rem; font-weight: 800; line-height: 1;
  color: var(--text);
}
.score-label {
  font-size: 0.75rem; color: var(--text-muted);
}
.score-bar-wrapper { margin-bottom: 16px; }
.score-bar-track {
  height: 8px; background: var(--border);
  border-radius: 99px; overflow: hidden;
  margin-bottom: 6px;
}
.score-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981 0%, #f59e0b 50%, #ef4444 100%);
  border-radius: 99px;
  transition: width 1s ease;
}
.score-bar-labels {
  display: flex; justify-content: space-between;
  font-size: 0.72rem;
}
.score-desc {
  font-size: 0.88rem; color: var(--text-muted);
  text-align: center; font-style: italic;
}

/* Metrics Card */
.metrics-card { grid-column: 2; }
.metrics-list { display: flex; flex-direction: column; gap: 18px; }
.metric-item { }
.metric-info {
  display: flex; justify-content: space-between;
  margin-bottom: 6px;
}
.metric-name { font-size: 0.88rem; font-weight: 600; }
.metric-hint { font-size: 0.75rem; color: var(--text-light); }
.metric-bar-wrap {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 4px;
}
.metric-bar-track {
  flex: 1; height: 7px; background: var(--border);
  border-radius: 99px; overflow: hidden;
}
.metric-bar-fill {
  height: 100%; background: var(--danger);
  border-radius: 99px; transition: width 0.9s ease;
}
.metric-bar-inverse { background: var(--warning); }
.metric-value {
  font-size: 0.82rem; font-weight: 700;
  color: var(--text); min-width: 36px; text-align: right;
}
.metric-status { font-size: 0.75rem; color: var(--text-muted); }

/* Explanation Card */
.explanation-card { grid-column: 1 / -1; }
.explanation-body { margin-bottom: 20px; }
.explanation-body p {
  font-size: 0.95rem; color: var(--text);
  line-height: 1.8;
}
.key-findings { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.finding-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--warning-light);
  border: 1px solid rgba(245,158,11,0.3);
  color: #92400e; font-size: 0.8rem; font-weight: 500;
  padding: 5px 12px; border-radius: 20px;
}

/* Groups Card */
.groups-card { }
.groups-list { display: flex; flex-direction: column; gap: 14px; }
.group-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
}
.group-icon { font-size: 1.4rem; }
.group-info { flex: 1; }
.group-name { font-size: 0.88rem; font-weight: 600; }
.group-desc { font-size: 0.78rem; color: var(--text-muted); }
.group-impact {
  font-size: 0.82rem; font-weight: 700;
  color: var(--danger);
}

/* Fixes Card */
.fixes-card { }
.fixes-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 4px; }
.fix-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border-left: 3px solid var(--primary);
}
.fix-num {
  width: 22px; height: 22px; flex-shrink: 0;
  background: var(--primary); color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700;
}
.fix-title { font-size: 0.88rem; font-weight: 700; margin-bottom: 3px; }
.fix-desc { font-size: 0.78rem; color: var(--text-muted); }

/* ============================================================
   COMPARISON SECTION
   ============================================================ */
.improvement-banner {
  display: flex; align-items: center; justify-content: center;
  gap: 0;
  background: linear-gradient(135deg, #ecfdf5, #eff6ff);
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: var(--radius);
  padding: 24px 40px;
  margin-bottom: 32px;
}
.imp-stat { text-align: center; padding: 0 32px; }
.imp-label { display: block; font-size: 0.78rem; color: var(--text-muted); font-weight: 500; margin-bottom: 4px; }
.imp-value { display: block; font-size: 1.5rem; font-weight: 800; color: var(--success); }
.imp-divider { width: 1px; height: 48px; background: rgba(16,185,129,0.25); }

.comparison-layout { display: flex; flex-direction: column; gap: 24px; }

.compare-scores {
  display: flex; align-items: center;
  justify-content: center; gap: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.compare-score-card {
  text-align: center; padding: 24px 48px;
  border-radius: var(--radius);
}
.compare-score-card.before { background: var(--danger-light); }
.compare-score-card.after { background: var(--success-light); }
.cs-label {
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.12em; color: var(--text-muted);
  margin-bottom: 8px;
}
.cs-number {
  font-size: 3.5rem; font-weight: 800;
  line-height: 1;
  margin-bottom: 4px;
}
.compare-score-card.before .cs-number { color: var(--danger); }
.compare-score-card.after .cs-number { color: var(--success); }
.cs-sub { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 12px; }
.compare-arrow {
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; padding: 0 28px;
}
.arrow-line {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, var(--danger), var(--success));
}
.arrow-text {
  font-size: 1.1rem; font-weight: 800;
  color: var(--success);
}

/* Comparison Table */
.comp-table-card, .chart-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.comp-table-title, .chart-title {
  font-size: 1rem; font-weight: 700;
  margin-bottom: 20px;
}
.comp-table-wrapper { overflow-x: auto; }
.comp-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.88rem;
}
.comp-table th {
  background: var(--bg); text-align: left;
  padding: 11px 16px; font-weight: 700;
  color: var(--text-muted); font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
}
.comp-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.comp-table tr:last-child td { border-bottom: none; }
.comp-table .td-before { color: var(--danger); font-weight: 600; }
.comp-table .td-after { color: var(--success); font-weight: 600; }
.comp-table .td-imp { color: var(--success); font-weight: 700; }

/* Charts */
.chart-wrapper { position: relative; height: 260px; }

/* Comparison layout - two charts side by side */
.comparison-layout .chart-card {
  flex: 1;
}
.charts-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 22px;
}

/* Section CTA */
.section-cta {
  text-align: center; padding: 40px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.section-cta p {
  font-size: 1rem; color: var(--text-muted);
  margin-bottom: 20px;
}

/* ============================================================
   REPORT SECTION
   ============================================================ */
.report-preview-wrapper {
  display: grid; grid-template-columns: 1fr auto; gap: 28px;
  align-items: start;
}
.report-preview-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.report-header-strip {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white; padding: 16px 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.88rem; font-weight: 600;
}
.report-body { padding: 28px; }
.report-section {
  margin-bottom: 28px; padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.report-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.report-section h4 {
  font-size: 0.95rem; font-weight: 700;
  margin-bottom: 14px;
}
.report-meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.report-meta-item {
  background: var(--bg); border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem;
}
.report-meta-item span { color: var(--text-muted); }
.report-meta-item strong { color: var(--text); }

.report-bias-summary {
  display: flex; align-items: center; justify-content: center;
  gap: 20px;
}
.rbs-item {
  display: flex; flex-direction: column; align-items: center;
  gap: 4px; padding: 16px 24px; border-radius: var(--radius-sm);
}
.rbs-item.rbs-before { background: var(--danger-light); }
.rbs-item.rbs-after { background: var(--success-light); }
.rbs-label { font-size: 0.72rem; font-weight: 600; color: var(--text-muted); }
.rbs-score {
  font-size: 1.4rem; font-weight: 800;
}
.rbs-before .rbs-score { color: var(--danger); }
.rbs-after .rbs-score { color: var(--success); }
.rbs-tag { font-size: 0.72rem; color: var(--text-muted); }
.rbs-arrow { font-size: 1.4rem; color: var(--text-light); }

.report-table {
  width: 100%; border-collapse: collapse; font-size: 0.82rem;
}
.report-table th {
  background: var(--bg); padding: 9px 12px;
  text-align: left; font-weight: 700;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
}
.report-table td {
  padding: 9px 12px; border-bottom: 1px solid var(--border);
}
.report-explanation {
  font-size: 0.88rem; line-height: 1.75; color: var(--text);
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
  padding: 14px 18px; border-radius: 0 8px 8px 0;
}
.report-fixes {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
}
.report-fixes li {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem; padding: 8px 12px;
  background: var(--bg); border-radius: var(--radius-sm);
}
.report-fixes li::before { content: "✓"; color: var(--success); font-weight: 700; }

.compliance-list { display: flex; flex-direction: column; gap: 8px; }
.compliance-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: var(--radius-sm);
  font-size: 0.85rem;
}
.compliance-item.pass {
  background: var(--success-light);
  border: 1px solid rgba(16,185,129,0.2);
  color: #065f46;
}
.compliance-item span { font-weight: 700; }

.download-actions {
  display: flex; flex-direction: column; gap: 12px;
  min-width: 240px;
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed; bottom: 28px; right: 28px;
  background: var(--text); color: white;
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 0.88rem; font-weight: 500;
  box-shadow: var(--shadow-lg);
  transform: translateY(80px); opacity: 0;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), opacity 0.35s ease;
  z-index: 9998;
  max-width: 320px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast-icon { font-size: 1rem; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .navbar { padding: 0 16px; }
  .nav-steps { display: none; }

  .hero { padding: 60px 16px 40px; }
  .hero-stats { flex-direction: column; gap: 14px; padding: 20px; }
  .stat-div { width: 40px; height: 1px; }

  .flow-steps { flex-direction: column; align-items: center; }
  .flow-arrow { transform: rotate(90deg); }
  .flow-card { max-width: 100%; width: 100%; }

  .results-grid { grid-template-columns: 1fr; }
  .explanation-card { grid-column: 1; }

  .page-container { padding: 24px 16px 60px; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .page-header > div:last-child { margin-left: 0; }

  .compare-scores { flex-direction: column; padding: 24px; }
  .compare-arrow { flex-direction: row; }
  .arrow-line { width: 40px; }
  .improvement-banner { flex-direction: column; }
  .imp-divider { width: 60px; height: 1px; }

  .report-preview-wrapper { grid-template-columns: 1fr; }
  .download-actions { flex-direction: row; flex-wrap: wrap; }

  .charts-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .btn-lg { width: 100%; justify-content: center; }
  .score-ring-wrapper { width: 120px; height: 120px; }
}