/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

:root {
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  /* Brand Colors */
  --color-primary: #01696F;
  --color-primary-hover: #0C4E54;
  --color-primary-active: #0a3e42;
  --color-accent-light: #E8F4F5;
  --color-bg: #F7F9F9;
  --color-surface: #FFFFFF;
  --color-surface-2: #F0F4F4;
  --color-border: #D6E0E0;
  --color-divider: #E2EAEA;
  --color-text: #1A2B2C;
  --color-text-muted: #5A7072;
  --color-text-faint: #8FA3A5;
  --color-text-inverse: #FFFFFF;

  /* Tier Colors */
  --color-tier-1: #2E7D4F;
  --color-tier-1-bg: #E8F5ED;
  --color-tier-2: #C27A00;
  --color-tier-2-bg: #FFF3D6;
  --color-tier-3: #D35400;
  --color-tier-3-bg: #FFF0E6;
  --color-tier-4: #C0392B;
  --color-tier-4-bg: #FDECEB;

  /* Status */
  --color-success: #2E7D4F;
  --color-success-bg: #E8F5ED;
  --color-warning: #C27A00;
  --color-warning-bg: #FFF3D6;
  --color-error: #C0392B;
  --color-error-bg: #FDECEB;

  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.2vw, 0.875rem);
  --text-base: clamp(0.875rem, 0.85rem + 0.15vw, 0.9375rem);
  --text-lg: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,40,42,0.06);
  --shadow-md: 0 4px 12px rgba(0,40,42,0.08);
  --shadow-lg: 0 8px 24px rgba(0,40,42,0.12);

  /* Transition */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

a, button, [role='button'], input, textarea, select {
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

::selection {
  background: rgba(1, 105, 111, 0.15);
  color: var(--color-text);
}

h1, h2, h3, h4 { line-height: 1.2; text-wrap: balance; }
p, li, figcaption { text-wrap: pretty; }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-brand { flex-shrink: 0; }

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.logo-svg { flex-shrink: 0; border-radius: 50%; }

.logo-text { display: flex; flex-direction: column; }
.logo-name { font-weight: 700; font-size: var(--text-sm); color: var(--color-primary); letter-spacing: -0.01em; }
.logo-tagline { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.3; }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
  flex-wrap: wrap;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  white-space: nowrap;
}

.nav-link:hover { color: var(--color-primary); background: var(--color-accent-light); }
.nav-link.active { color: var(--color-primary); background: var(--color-accent-light); font-weight: 600; }
.nav-link svg { flex-shrink: 0; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text);
  margin-left: auto;
}

/* ===== MAIN ===== */
.main {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-6) var(--space-16);
}

.page { display: none; }
.page.active { display: block; }

.page-header { margin-bottom: var(--space-6); }
.page-title { font-size: var(--text-xl); font-weight: 700; color: var(--color-text); }
.page-subtitle { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-1); }

/* ===== CARDS ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-4);
}

.card-title { font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-1); }
.card-desc { font-size: var(--text-sm); color: var(--color-text-muted); }

.section-heading {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

/* ===== WELCOME CARD ===== */
.welcome-card { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%); color: white; border: none; }
.welcome-card .card-title { color: white; }
.welcome-card .card-desc { color: rgba(255,255,255,0.8); }

.welcome-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.institution-field { min-width: 280px; }
.institution-field label { font-size: var(--text-xs); color: rgba(255,255,255,0.7); display: block; margin-bottom: var(--space-1); }
.institution-field input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.15);
  color: white;
  font-size: var(--text-sm);
}
.institution-field input::placeholder { color: rgba(255,255,255,0.5); }
.institution-field input:focus { outline: none; border-color: white; background: rgba(255,255,255,0.25); }

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon-total { background: var(--color-accent-light); color: var(--color-primary); }
.stat-icon-pending { background: var(--color-warning-bg); color: var(--color-warning); }
.stat-icon-approved { background: var(--color-success-bg); color: var(--color-success); }
.stat-icon-hallucinations { background: var(--color-error-bg); color: var(--color-error); }

.stat-info { display: flex; flex-direction: column; }
.stat-number { font-size: var(--text-xl); font-weight: 700; line-height: 1; }
.stat-label { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }

/* ===== QUICK ACTIONS ===== */
.quick-actions { margin-bottom: var(--space-6); }
.actions-row { display: flex; gap: var(--space-3); flex-wrap: wrap; }

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
}
.action-btn:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-accent-light); }

.action-btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.action-btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-text-inverse);
}

/* ===== PIPELINE DIAGRAM ===== */
.pipeline-overview { overflow-x: auto; }

.pipeline-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: var(--space-6) var(--space-4);
  min-width: 600px;
}

.pipeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.pipeline-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-lg);
}

.pipeline-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 100px;
  font-weight: 500;
}

.pipeline-connector {
  width: 60px;
  height: 2px;
  background: var(--color-primary);
  flex-shrink: 0;
  margin-bottom: 28px;
  position: relative;
}

.pipeline-connector::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -4px;
  width: 0;
  height: 0;
  border-left: 6px solid var(--color-primary);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:disabled { background: var(--color-border); color: var(--color-text-faint); cursor: not-allowed; }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-secondary:disabled { color: var(--color-text-faint); cursor: not-allowed; }

.btn-lg { padding: var(--space-3) var(--space-6); font-size: var(--text-base); }
.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); }

/* ===== CLASSIFIER ===== */
.classifier-card { position: relative; }

.classifier-progress {
  height: 4px;
  background: var(--color-surface-2);
  border-radius: 2px;
  margin-bottom: var(--space-6);
  overflow: hidden;
}
.classifier-progress-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.4s ease;
}

.classifier-step { display: none; }
.classifier-step.active { display: block; }

.step-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.radio-group { display: flex; flex-direction: column; gap: var(--space-3); }

.radio-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}
.radio-option:hover { border-color: var(--color-primary); background: var(--color-accent-light); }
.radio-option:has(input:checked) { border-color: var(--color-primary); background: var(--color-accent-light); }

.radio-option input[type="radio"] { position: absolute; opacity: 0; }

.radio-custom {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
}
.radio-option:has(input:checked) .radio-custom {
  border-color: var(--color-primary);
}
.radio-option:has(input:checked) .radio-custom::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
}

.radio-option strong { font-size: var(--text-sm); display: block; }
.radio-desc { font-size: var(--text-xs); color: var(--color-text-muted); display: block; margin-top: 2px; }

.classifier-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

/* Classifier Result */
.classifier-result {
  text-align: center;
  padding: var(--space-8) var(--space-4);
}

.tier-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
}

.tier-number {
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 700;
  line-height: 1;
}
.tier-label {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-top: var(--space-2);
}

.tier-badge.tier-1 { background: var(--color-tier-1-bg); color: var(--color-tier-1); }
.tier-badge.tier-2 { background: var(--color-tier-2-bg); color: var(--color-tier-2); }
.tier-badge.tier-3 { background: var(--color-tier-3-bg); color: var(--color-tier-3); }
.tier-badge.tier-4 { background: var(--color-tier-4-bg); color: var(--color-tier-4); }

.tier-details {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.tier-gates {
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
}

.tier-gates .gate-tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  margin: var(--space-1);
  font-size: var(--text-xs);
}

/* ===== PIPELINE PAGE ===== */
.pipeline-info-card { margin-bottom: var(--space-6); }
.pipeline-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.info-field label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.info-field input, .info-field select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  background: var(--color-surface);
}
.info-field input:focus, .info-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1,105,111,0.1);
}

.tier-display, .content-id-display {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

/* Pipeline Progress */
.pipeline-progress-bar {
  margin-bottom: var(--space-6);
}
.pipeline-progress-track {
  height: 6px;
  background: var(--color-surface-2);
  border-radius: 3px;
  overflow: hidden;
}
.pipeline-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 0.5s ease;
}
.pipeline-progress-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-2);
}
.progress-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
}
.progress-label.completed { color: var(--color-success); font-weight: 600; }
.progress-label.active { color: var(--color-primary); font-weight: 600; }

/* Gate Cards */
.gate-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.gate-card.locked { opacity: 0.55; }
.gate-card.active { border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(1,105,111,0.1); }
.gate-card.completed { border-color: var(--color-success); }

.gate-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: var(--space-3);
}
.gate-card.locked .gate-header { cursor: default; }

.gate-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.gate-number-badge {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.gate-card.active .gate-number-badge { background: var(--color-primary); color: white; }
.gate-card.completed .gate-number-badge { background: var(--color-success); color: white; }

.gate-title { font-size: var(--text-sm); font-weight: 600; }
.gate-role { font-size: var(--text-xs); color: var(--color-text-muted); }

.gate-header-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.gate-status {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
}

.gate-card.active .gate-status { background: var(--color-accent-light); color: var(--color-primary); }
.gate-card.completed .gate-status { background: var(--color-success-bg); color: var(--color-success); }

.gate-chevron {
  transition: transform var(--transition);
  color: var(--color-text-faint);
}
.gate-card.expanded .gate-chevron { transform: rotate(180deg); }

.gate-body {
  display: none;
  padding: 0 var(--space-5) var(--space-5);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-5);
}
.gate-card.expanded .gate-body { display: block; }

/* Checklists */
.gate-checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.check-item:hover { background: var(--color-accent-light); }

.check-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  accent-color: var(--color-primary);
  margin-top: 1px;
  cursor: pointer;
}

.gate-sign-off {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.sign-off-field label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.sign-off-field input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}
.sign-off-field input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1,105,111,0.1);
}

.gate-complete-btn {
  width: 100%;
  justify-content: center;
}

/* Pipeline Final */
.pipeline-final { margin-top: var(--space-4); }

.approve-card {
  text-align: center;
  padding: var(--space-8);
  border: 2px solid var(--color-primary);
  background: var(--color-accent-light);
}
.approve-card svg { margin: 0 auto var(--space-4); }
.approve-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); color: var(--color-primary); }
.approve-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-5); }

/* ===== AGE CHECKER ===== */
.field-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.select-lg {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  background: var(--color-surface);
  cursor: pointer;
}
.select-lg:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1,105,111,0.1);
}

.age-band-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.age-spec-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.age-spec-card h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.age-spec-card h4 svg { flex-shrink: 0; }

.spec-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.spec-list li {
  font-size: var(--text-sm);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.5;
}
.spec-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.spec-list.allowed li::before { background: var(--color-success); }
.spec-list.prohibited li::before { background: var(--color-error); }
.spec-list.info li::before { background: var(--color-primary); }

/* ===== HALLUCINATION LOG ===== */
.hallucination-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.summary-mini {
  text-align: center;
  padding: var(--space-5);
}
.summary-mini-number {
  display: block;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
}
.summary-mini-label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-field label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  background: var(--color-surface);
  font-family: var(--font-body);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1,105,111,0.1);
}
.form-field.full-width { grid-column: 1 / -1; }

.table-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.table-header-row .section-heading { margin-bottom: 0; }

.table-responsive { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.data-table th {
  text-align: left;
  padding: var(--space-3) var(--space-3);
  font-weight: 600;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--color-divider);
  white-space: nowrap;
}
.data-table td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
}
.data-table tbody tr:hover { background: var(--color-accent-light); }
.data-table .empty-row td {
  text-align: center;
  padding: var(--space-8);
  color: var(--color-text-faint);
}
.data-table .empty-row:hover { background: none; }

.sortable { cursor: pointer; user-select: none; }
.sortable:hover { color: var(--color-primary); }

/* ===== REGISTRY ===== */
.filter-card { margin-bottom: var(--space-4); }
.filter-row {
  display: flex;
  gap: var(--space-4);
  align-items: flex-end;
  flex-wrap: wrap;
}
.filter-field { flex: 1; min-width: 150px; }
.filter-field label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}
.filter-field input, .filter-field select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  background: var(--color-surface);
}
.filter-field input:focus, .filter-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1,105,111,0.1);
}
.filter-action { flex: 0 0 auto; }

/* Status badges */
.status-badge {
  display: inline-block;
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
}
.status-approved { background: var(--color-success-bg); color: var(--color-success); }
.status-pending { background: var(--color-warning-bg); color: var(--color-warning); }
.status-rejected { background: var(--color-error-bg); color: var(--color-error); }

.tier-badge-sm {
  display: inline-block;
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 700;
}
.tier-1-badge { background: var(--color-tier-1-bg); color: var(--color-tier-1); }
.tier-2-badge { background: var(--color-tier-2-bg); color: var(--color-tier-2); }
.tier-3-badge { background: var(--color-tier-3-bg); color: var(--color-tier-3); }
.tier-4-badge { background: var(--color-tier-4-bg); color: var(--color-tier-4); }

.expand-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 500;
}
.expand-btn:hover { background: var(--color-accent-light); }

/* ===== MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  justify-content: center;
  align-items: center;
  padding: var(--space-6);
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: var(--space-6);
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
}
.modal-close:hover { background: var(--color-surface-2); color: var(--color-text); }

.modal-content h3 { font-size: var(--text-lg); margin-bottom: var(--space-4); }
.modal-content .detail-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--text-sm);
}
.modal-content .detail-label {
  font-weight: 600;
  color: var(--color-text-muted);
}

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  padding: var(--space-3) var(--space-5);
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.toast.success { background: var(--color-success); color: white; }
.toast.error { background: var(--color-error); color: white; }

@keyframes toastIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(-10px); }
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: var(--space-6);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}
.footer p + p { margin-top: var(--space-1); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .pipeline-info-grid { grid-template-columns: repeat(2, 1fr); }
  .hallucination-summary { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-3) var(--space-4);
    flex-direction: column;
    align-items: stretch;
    box-shadow: var(--shadow-md);
  }
  .nav.open { display: flex; }
  .nav-link { padding: var(--space-3) var(--space-4); }

  .header-inner { flex-wrap: wrap; position: relative; }

  .main { padding: var(--space-4) var(--space-4) var(--space-12); }

  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-card { padding: var(--space-3); }

  .welcome-content { flex-direction: column; }
  .institution-field { min-width: 100%; }

  .pipeline-info-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field.full-width { grid-column: 1; }

  .age-band-specs { grid-template-columns: 1fr; }

  .hallucination-summary { grid-template-columns: 1fr; }

  .gate-sign-off { grid-template-columns: 1fr; }

  .filter-row { flex-direction: column; }
  .filter-field { min-width: 100%; }

  .actions-row { flex-direction: column; }
  .action-btn { justify-content: center; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .logo-tagline { display: none; }
}