/* Capital Aviation Training Portal — Polished Responsive Styles */

:root {
  /* Primary brand colors */
  --ca-blue: #1a3a5c;
  --ca-blue-dark: #0f2540;
  --ca-blue-light: #2a4f7a;
  --ca-gold: #c8a84b;
  --ca-gold-light: #dbb95f;
  --ca-gold-dark: #a68a3a;
  
  /* Neutrals */
  --ca-dark: #0d1f30;
  --ca-dark-secondary: #152535;
  --ca-light: #e8eef4;
  --ca-light-secondary: #f0f4f8;
  --white: #ffffff;
  
  /* Accents */
  --ca-accent: #2d6aa6;
  --ca-accent-light: #4a8bc2;
  --ca-success: #2d7a4a;
  --ca-success-light: #3d9a5a;
  --ca-danger: #b83a3a;
  --ca-danger-light: #d84a4a;
  --ca-warning: #c8a84b;
  
  /* Grays */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, var(--gray-100) 0%, var(--ca-light) 100%);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--gray-900);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p { margin-bottom: var(--space-md); }

a {
  color: var(--ca-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--ca-accent-light); }

/* ── Header ── */
.app-header {
  background: linear-gradient(135deg, var(--ca-dark) 0%, var(--ca-blue-dark) 100%);
  color: var(--white);
  padding: 0 var(--space-lg);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
}

.app-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.03) 50%, transparent 100%);
  pointer-events: none;
}

.app-header .logo {
  font-weight: 700;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  letter-spacing: -0.02em;
}
.app-header .logo-icon {
  font-size: 1.5rem;
}
.app-header .logo span { 
  color: var(--ca-gold);
  background: linear-gradient(135deg, var(--ca-gold) 0%, var(--ca-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-header nav {
  display: flex;
  gap: var(--space-lg);
}

.app-header nav a {
  color: var(--gray-300);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.app-header nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ca-gold);
  transition: width var(--transition-normal);
}

.app-header nav a:hover {
  color: var(--white);
}
.app-header nav a:hover::after {
  width: 100%;
}

.app-header .user-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.app-header .user-info .name {
  font-size: 0.85rem;
  font-weight: 500;
}

.app-header .user-info .avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--ca-gold) 0%, var(--ca-gold-dark) 100%);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--ca-dark);
  font-size: 0.8rem;
  box-shadow: 0 2px 8px rgba(200, 168, 75, 0.3);
}

/* ── Layout Containers ── */
.page-container { 
  max-width: 1200px; 
  margin: 0 auto; 
  padding: var(--space-xl) var(--space-lg);
}

.container-narrow { 
  max-width: 800px; 
  margin: 0 auto; 
  padding: var(--space-xl) var(--space-lg);
}

/* ── Page Headers ── */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-header h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-xs);
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--ca-blue-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header p {
  color: var(--gray-600);
  font-size: 1rem;
}

/* ── Cards ── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  border: 1px solid var(--gray-200);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--gray-800);
}

.card-subtitle { 
  color: var(--gray-500); 
  font-size: 0.875rem; 
}

/* ── Stats ── */
.stats-row { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ca-blue) 0%, var(--ca-accent) 100%);
}

.stat-card.highlight {
  background: linear-gradient(135deg, var(--ca-dark) 0%, var(--ca-blue-dark) 100%);
  border-color: transparent;
}
.stat-card.highlight::before {
  background: linear-gradient(90deg, var(--ca-gold) 0%, var(--ca-gold-light) 100%);
}

.stat-card .number { 
  font-size: 2.5rem; 
  font-weight: 700; 
  color: var(--ca-blue);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-card.highlight .number { 
  color: var(--ca-gold); 
}

.stat-card .label { 
  font-size: 0.85rem; 
  color: var(--gray-600); 
  font-weight: 500;
}
.stat-card.highlight .label { 
  color: var(--gray-300); 
}

/* ── Progress Bar ── */
.progress-bar-wrap {
  background: var(--gray-200);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  margin: var(--space-sm) 0;
}

.progress-bar-fill {
  background: linear-gradient(90deg, var(--ca-blue) 0%, var(--ca-accent) 100%);
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary { 
  background: linear-gradient(135deg, var(--ca-blue) 0%, var(--ca-accent) 100%);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(26, 58, 92, 0.3);
}
.btn-primary:hover { 
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 58, 92, 0.4);
}

.btn-secondary { 
  background: var(--gray-100); 
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}
.btn-secondary:hover { 
  background: var(--gray-200);
}

.btn-gold { 
  background: linear-gradient(135deg, var(--ca-gold) 0%, var(--ca-gold-dark) 100%);
  color: var(--ca-dark);
  box-shadow: 0 2px 8px rgba(200, 168, 75, 0.3);
}
.btn-gold:hover { 
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(200, 168, 75, 0.4);
}

.btn-outline { 
  background: transparent; 
  border: 2px solid var(--ca-blue); 
  color: var(--ca-blue);
}
.btn-outline:hover { 
  background: var(--ca-blue);
  color: var(--white);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8rem;
}

.btn:disabled { 
  opacity: 0.5; 
  cursor: not-allowed; 
  transform: none;
}

/* ── Phase Badges ── */
.phase-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.phase-1 { background: #dbeafe; color: #1d4ed8; }
.phase-2 { background: #d1fae5; color: #065f46; }
.phase-3 { background: #fef3c7; color: #92400e; }
.phase-4 { background: #ede9fe; color: #5b21b6; }
.phase-5 { background: #fce7f3; color: #9d174d; }

/* ── Module Grid ── */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.module-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--ca-blue) 0%, var(--ca-accent) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.module-card:hover { 
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--ca-gold);
}
.module-card:hover::before { opacity: 1; }

.module-card.completed { 
  border-color: var(--ca-success);
}
.module-card.completed::before { 
  opacity: 1; 
  background: var(--ca-success);
}

.module-card-header { 
  display: flex; 
  justify-content: space-between; 
  align-items: flex-start; 
  margin-bottom: var(--space-md);
}

.module-card-icon { 
  font-size: 2.5rem; 
  line-height: 1;
}

.module-card-title { 
  font-weight: 700; 
  font-size: 1.05rem; 
  line-height: 1.4; 
  margin: var(--space-sm) 0;
  color: var(--gray-800);
}

.module-card-meta { 
  font-size: 0.8rem; 
  color: var(--gray-500); 
  display: flex; 
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.module-card-desc { 
  font-size: 0.9rem; 
  color: var(--gray-600); 
  margin: var(--space-sm) 0; 
  line-height: 1.6;
}

.module-status { 
  font-size: 0.85rem; 
  font-weight: 600; 
  color: var(--ca-blue);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.module-card.completed .module-status { 
  color: var(--ca-success); 
}

/* ── Section Headers ── */
.section-header { 
  margin: var(--space-2xl) 0 var(--space-lg); 
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--gray-200);
}
.section-header:first-child { margin-top: 0; }

.section-header h2 { 
  font-size: 1.25rem; 
  color: var(--gray-800); 
  margin-bottom: var(--space-xs);
}

.section-header p { 
  color: var(--gray-500); 
  font-size: 0.9rem; 
  margin: 0;
}

/* ── Login Page ── */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--ca-dark) 0%, var(--ca-blue-dark) 50%, #0a1929 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(200, 168, 75, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 70% 80%, rgba(45, 106, 166, 0.08) 0%, transparent 40%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(2%, 2%); }
}

.login-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
}

.login-logo { 
  text-align: center; 
  margin-bottom: var(--space-xl); 
}

.login-logo .icon { 
  font-size: 3.5rem; 
  margin-bottom: var(--space-md);
  display: block;
}

.login-logo h1 { 
  font-size: 1.75rem; 
  background: linear-gradient(135deg, var(--ca-dark) 0%, var(--ca-blue-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
}

.login-logo p { 
  color: var(--gray-500); 
  font-size: 0.95rem; 
}

.form-group { margin-bottom: var(--space-md); }

.form-group label { 
  display: block; 
  font-size: 0.85rem; 
  font-weight: 600; 
  margin-bottom: var(--space-sm);
  color: var(--gray-700);
}

.form-group input {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: var(--gray-50);
}

.form-group input:focus { 
  outline: none; 
  border-color: var(--ca-blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
}

.login-error { 
  background: #fef2f2; 
  color: var(--ca-danger); 
  padding: var(--space-md); 
  border-radius: var(--radius-md); 
  font-size: 0.9rem; 
  margin-bottom: var(--space-md);
  display: none;
  border-left: 4px solid var(--ca-danger);
}
.login-error.visible { display: block; }

/* ── Quiz Styles ── */
.quiz-question { 
  font-size: 1.1rem; 
  font-weight: 600; 
  margin-bottom: var(--space-lg);
  color: var(--gray-800);
}

.quiz-options { 
  display: flex; 
  flex-direction: column; 
  gap: var(--space-sm); 
}

.quiz-option {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  gap: var(--space-md);
  background: var(--white);
}

.quiz-option:hover:not(.correct):not(.incorrect):not(.selected) { 
  border-color: var(--ca-blue); 
  background: var(--ca-light);
}

.quiz-option.selected { 
  border-color: var(--ca-blue); 
  background: #dbeafe;
}

.quiz-option.correct { 
  border-color: var(--ca-success); 
  background: #d1fae5;
}

.quiz-option.incorrect { 
  border-color: var(--ca-danger); 
  background: #fee2e2;
}

.quiz-option .letter { 
  font-weight: 700; 
  width: 32px; 
  height: 32px; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  background: var(--gray-200); 
  border-radius: var(--radius-full); 
  font-size: 0.9rem; 
  flex-shrink: 0;
}

.quiz-option.correct .letter { 
  background: var(--ca-success); 
  color: white; 
}

.quiz-option.incorrect .letter { 
  background: var(--ca-danger); 
  color: white; 
}

.quiz-option .text { 
  flex: 1; 
  font-size: 0.95rem;
}

.quiz-feedback { 
  padding: var(--space-md); 
  border-radius: var(--radius-md); 
  margin-top: var(--space-md); 
  font-size: 0.95rem;
  display: none;
}
.quiz-feedback.visible { display: block; }
.quiz-feedback.correct { 
  background: #d1fae5; 
  color: #065f46; 
  border-left: 4px solid var(--ca-success); 
}
.quiz-feedback.incorrect { 
  background: #fee2e2; 
  color: #991b1b; 
  border-left: 4px solid var(--ca-danger); 
}

/* ── Results Banner ── */
.results-banner { 
  text-align: center; 
  padding: var(--space-2xl); 
}

.results-banner .score { 
  font-size: 4rem; 
  font-weight: 700; 
  margin-bottom: var(--space-sm); 
}
.results-banner .score.pass { 
  background: linear-gradient(135deg, var(--ca-success) 0%, var(--ca-success-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.results-banner .score.fail { 
  color: var(--ca-danger); 
}
.results-banner .message { 
  font-size: 1.15rem; 
  color: var(--gray-600); 
  margin-bottom: var(--space-xl); 
}

/* ── Footer ── */
.app-footer {
  text-align: center;
  padding: var(--space-xl);
  color: var(--gray-500);
  font-size: 0.8rem;
  border-top: 1px solid var(--gray-200);
  margin-top: var(--space-2xl);
}

/* ── Responsive Breakpoints ── */
@media (max-width: 1024px) {
  .module-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  html { font-size: 15px; }
  
  .app-header {
    padding: 0 var(--space-md);
    height: 56px;
  }
  
  .app-header .logo { font-size: 1rem; }
  .app-header .logo-icon { font-size: 1.25rem; }
  .app-header nav { display: none; } /* Mobile nav would need hamburger menu */
  
  .page-container { 
    padding: var(--space-lg) var(--space-md); 
  }
  
  .stats-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }
  
  .stat-card { padding: var(--space-md); }
  .stat-card .number { font-size: 1.75rem; }
  
  .module-grid { 
    grid-template-columns: 1fr; 
    gap: var(--space-md);
  }
  
  .card { 
    padding: var(--space-md); 
    margin-bottom: var(--space-md);
  }
  
  .login-card { 
    padding: var(--space-xl); 
  }
  
  .quiz-option { padding: var(--space-sm) var(--space-md); }
  .quiz-option .letter { width: 28px; height: 28px; font-size: 0.8rem; }
}

@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr; }
  
  .btn { 
    width: 100%; 
    justify-content: center;
  }
  
  .results-banner .score { font-size: 3rem; }
}

/* Tablet specific */
@media (min-width: 768px) and (max-width: 1024px) {
  .module-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.animate-fade-in {
  animation: fadeIn 0.3s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; opacity: 0; }
.animate-delay-2 { animation-delay: 0.2s; opacity: 0; }
.animate-delay-3 { animation-delay: 0.3s; opacity: 0; }


/* ── Login Page - Dark Theme ── */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #0d1f30 0%, #1a3a5c 50%, #0a1525 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 30%, rgba(200, 168, 75, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(45, 106, 166, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(10, 21, 37, 0.5) 0%, transparent 100%);
  pointer-events: none;
}

.login-page::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 30% 20%, rgba(200, 168, 75, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 70% 80%, rgba(45, 106, 166, 0.05) 0%, transparent 40%);
  animation: float 20s ease-in-out infinite;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(1%, 1%) rotate(1deg); }
}

.login-card {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 48px 40px;
  width: 100%;
  max-width: 480px;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(200, 168, 75, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  position: relative;
  z-index: 1;
}

.login-logo { 
  text-align: center; 
  margin-bottom: 36px; 
}

.login-logo-img {
  max-width: 280px;
  height: auto;
  margin-bottom: 16px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.login-tagline {
  font-size: 1.1rem;
  color: #475569;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-top: 8px;
}

.form-group { margin-bottom: 20px; }

.form-group label { 
  display: block; 
  font-size: 0.85rem; 
  font-weight: 600; 
  margin-bottom: 8px;
  color: #334155;
}

.form-group input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-size: 1rem;
  transition: all 0.2s ease;
  background: #f8fafc;
  color: #1e293b;
}

.form-group input:focus { 
  outline: none; 
  border-color: #1a3a5c;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(26, 58, 92, 0.1), 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.form-group input::placeholder {
  color: #94a3b8;
}

.login-error { 
  background: #fef2f2; 
  color: #b83a3a; 
  padding: 14px 18px; 
  border-radius: 12px; 
  font-size: 0.9rem; 
  margin-bottom: 20px;
  display: none;
  border-left: 4px solid #b83a3a;
  font-weight: 500;
}
.login-error.visible { display: block; }

/* Tablet */
@media (max-width: 768px) {
  .login-card {
    padding: 32px 24px;
    border-radius: 20px;
  }
  
  .login-logo-img {
    max-width: 220px;
  }
  
  .login-tagline {
    font-size: 1rem;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .login-page {
    padding: 16px;
    align-items: flex-start;
    padding-top: 40px;
  }
  
  .login-card {
    padding: 28px 20px;
  }
  
  .login-logo-img {
    max-width: 180px;
  }
  
  .form-group input {
    padding: 12px 16px;
  }
}

/* ════════════════════════════════════════════════════════════════════════
   Capital Aviation Training Portal — Final Exam, Admin, Certificate, iPad/iPhone hardening
   Appended 2026 to support FAA gold-standard testing flow.
   ════════════════════════════════════════════════════════════════════════ */

/* ── Segment badge (FAA Training Program Rev O segment ID) ── */
.seg-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: #e0e7ff;
  color: #3730a3;
  border: 1px solid #c7d2fe;
}

/* ── Dashboard topbar (responsive) ── */
.dashboard-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.module-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.module-banner {
  background: linear-gradient(135deg, #0d1f30 0%, #1a3a5c 100%);
  color: white;
}
.module-banner h1, .module-banner h2 { color: white; }

.module-grid-2col {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-lg);
}
@media (max-width: 900px) {
  .module-grid-2col { grid-template-columns: 1fr; }
}

.lesson-nav {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.lesson-content {
  font-size: 1rem;
  line-height: 1.7;
  color: #1e293b;
}
.lesson-content h1, .lesson-content h2, .lesson-content h3, .lesson-content h4 {
  margin: 1.2em 0 0.6em;
  color: var(--ca-blue-dark);
}
.lesson-content ul, .lesson-content ol { margin: 0.5em 0 0.5em 1.4em; }
.lesson-content code {
  background: var(--gray-100);
  padding: 0 4px;
  border-radius: 4px;
  font-size: 0.9em;
}
.lesson-source {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--gray-300);
  font-size: 0.78rem;
  color: var(--gray-500);
  font-style: italic;
}

.lesson-list {
  list-style: none;
  font-size: 0.9rem;
}
.lesson-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-200);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
}
.lesson-list li:hover { color: var(--ca-blue); }
.lesson-list li.active { color: var(--ca-blue); font-weight: 600; }
.lesson-list li:last-child { border-bottom: none; }
.lesson-list .check {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--gray-200);
  font-size: 0.75rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.lesson-list .check.completed { background: var(--ca-success); color: white; }

/* ── Final Exam ── */
.final-exam-page .palette-btn {
  width: 38px; height: 38px;
  border-radius: 8px;
  border: 1px solid var(--gray-300);
  background: white;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.final-exam-page .palette-btn[data-state="answered"] {
  background: #dbeafe;
  border-color: var(--ca-blue);
  color: var(--ca-blue);
}
.final-exam-page .palette-btn[data-state="current"] {
  background: var(--ca-blue);
  color: white;
  border-color: var(--ca-blue-dark);
  transform: scale(1.05);
}
.final-exam-page .palette-btn:hover { transform: translateY(-1px); }

/* ── Admin / FAA Inspector view ── */
.admin-table {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.admin-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.admin-table th, .admin-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-200);
  text-align: left;
}
.admin-table th {
  background: var(--gray-100);
  font-weight: 600;
  color: var(--gray-700);
  position: sticky;
  top: 0;
}
.admin-table tr:hover td { background: var(--gray-50); }
.admin-table tr.complete-row td { background: #f0fdf4; }
.badge-pass {
  background: #d1fae5; color: #065f46;
  padding: 2px 10px; border-radius: var(--radius-full);
  font-size: 0.75rem; font-weight: 700;
}
.badge-fail {
  background: #fee2e2; color: #991b1b;
  padding: 2px 10px; border-radius: var(--radius-full);
  font-size: 0.75rem; font-weight: 700;
}

/* ── Certificate ── */
.certificate {
  background: white;
  padding: 0;
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}
.cert-border {
  border: 12px solid var(--ca-blue-dark);
  border-image: linear-gradient(135deg, #0d1f30, #c8a84b, #0d1f30) 1;
  padding: 48px 32px;
  text-align: center;
  position: relative;
  background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
}
.cert-watermark {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 800;
  color: rgba(13, 31, 48, 0.04);
  letter-spacing: 12px;
  pointer-events: none;
  transform: rotate(-22deg);
}
.cert-header { margin-bottom: 32px; position: relative; }
.cert-tag {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--ca-gold-dark);
  margin-bottom: 8px;
}
.cert-airline {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--ca-blue-dark);
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}
.cert-cert-num {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.cert-presented {
  font-size: 1rem;
  color: var(--gray-600);
  margin-bottom: 12px;
}
.cert-name {
  font-family: 'Georgia', serif;
  font-size: 2.6rem;
  font-style: italic;
  color: var(--ca-blue-dark);
  margin-bottom: 4px;
  border-bottom: 2px solid var(--ca-gold);
  display: inline-block;
  padding: 0 32px 8px;
}
.cert-role {
  font-size: 0.95rem;
  color: var(--gray-600);
  margin-bottom: 24px;
  margin-top: 8px;
}
.cert-statement {
  font-size: 1rem;
  color: var(--gray-700);
  margin-bottom: 16px;
}
.cert-module {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ca-blue-dark);
  margin-bottom: 24px;
  padding: 12px 24px;
  background: linear-gradient(135deg, rgba(200, 168, 75, 0.1), rgba(26, 58, 92, 0.05));
  border-radius: var(--radius-md);
  display: inline-block;
}
.cert-details {
  max-width: 600px;
  margin: 24px auto;
  font-size: 0.85rem;
  color: var(--gray-700);
  text-align: left;
  background: var(--gray-50);
  padding: 16px;
  border-radius: var(--radius-md);
  line-height: 1.8;
}
.cert-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0 24px;
}
.cert-col { text-align: center; }
.cert-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: 4px;
}
.cert-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ca-blue-dark);
}
.cert-signatures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 40px;
}
.cert-sig { text-align: center; font-size: 0.8rem; }
.cert-sig-line { color: var(--gray-400); margin-bottom: 4px; }
.cert-sig-name { font-weight: 600; color: var(--ca-blue-dark); }
.cert-sig-role { color: var(--gray-500); font-size: 0.75rem; }
.cert-footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
  font-size: 0.7rem;
  color: var(--gray-500);
  line-height: 1.6;
}

@media (max-width: 600px) {
  .cert-border { padding: 24px 16px; border-width: 6px; }
  .cert-airline { font-size: 1.6rem; }
  .cert-name { font-size: 1.8rem; padding: 0 16px 6px; }
  .cert-module { font-size: 1.1rem; padding: 8px 16px; }
  .cert-row { grid-template-columns: 1fr; gap: 8px; }
  .cert-signatures { grid-template-columns: 1fr; gap: 16px; }
  .cert-watermark { font-size: 2rem; letter-spacing: 6px; }
}

/* Print rules — output looks like a real cert */
@media print {
  body { background: white !important; }
  .app-header, .cert-controls, .app-footer { display: none !important; }
  .certificate { box-shadow: none; border-radius: 0; }
  .cert-border { border-color: var(--ca-blue-dark) !important; }
  .page-container, .container-narrow { padding: 0 !important; }
}

/* ── iPad / iPhone touch-target hardening ── */
@media (max-width: 1024px) {
  .quiz-option { min-height: 56px; padding: 14px 16px; }
  .quiz-option .letter { width: 36px; height: 36px; font-size: 0.95rem; }
  .quiz-option .text { font-size: 1rem; }
  .btn { min-height: 48px; padding: 12px 20px; font-size: 0.95rem; }
  .btn-sm { min-height: 36px; padding: 6px 14px; font-size: 0.85rem; }
  .form-group input { min-height: 52px; font-size: 1rem; }
  .module-card { padding: var(--space-lg); }
  .module-card-title { font-size: 1.1rem; }
}

/* iPhone-portrait specific */
@media (max-width: 480px) {
  .login-card { padding: 28px 20px; border-radius: 18px; }
  .login-logo-img { max-width: 200px; }
  .form-group input { min-height: 56px; font-size: 16px; /* prevents iOS zoom on focus */ }
  .btn { min-height: 52px; }
  .quiz-option { min-height: 64px; }
  .module-card-title { font-size: 1.05rem; }
  .stats-row { grid-template-columns: 1fr; gap: 8px; }
  .module-grid { grid-template-columns: 1fr; }
  .stat-card { padding: 16px; }
  .stat-card .number { font-size: 2rem; }
  .page-container { padding: 16px 12px; }
}

/* iPad-landscape: 2-column module layout looks better */
@media (min-width: 760px) and (max-width: 1180px) {
  .module-grid { grid-template-columns: repeat(2, 1fr); }
}

/* iOS Safe Area inset support (notch / home indicator) */
@supports (padding: max(0px)) {
  .app-header {
    padding-top: max(0px, env(safe-area-inset-top));
    padding-left: max(var(--space-lg), env(safe-area-inset-left));
    padding-right: max(var(--space-lg), env(safe-area-inset-right));
  }
  .page-container, .container-narrow {
    padding-bottom: max(var(--space-xl), env(safe-area-inset-bottom));
  }
}

/* Prevent text-size adjust on rotation */
html { -webkit-text-size-adjust: 100%; }
input, button, select, textarea { font-family: inherit; }
input { -webkit-appearance: none; appearance: none; }

/* Smooth-scroll palette on tap */
.final-exam-page .palette-btn { -webkit-tap-highlight-color: transparent; }
.quiz-option { -webkit-tap-highlight-color: transparent; }
.module-card { -webkit-tap-highlight-color: transparent; }