/* Modern, beautiful AI health app styling */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --ai-primary: #6366f1;
  --ai-primary-2: #3b82f6;
  --ai-accent: #06b6d4;
  --ai-accent-2: #8b5cf6;
  --ai-bg: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  --ai-text: #0f172a;
  --ai-text-muted: #64748b;
  --ai-card-border: #e2e8f0;
  --ai-card-bg: rgba(255, 255, 255, 0.8);
  --ai-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
  --ai-shadow-lg: 0 35px 60px -12px rgba(0, 0, 0, 0.15);
  --ai-border-radius: 20px;
  --ai-border-radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--ai-bg);
  background-attachment: fixed;
  color: var(--ai-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Modern Navbar */
.app-navbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  transition: all 0.3s ease;
}

.navbar .navbar-brand {
  font-weight: 700;
  letter-spacing: -0.5px;
  font-size: 1.25rem;
}

.app-brand {
  display: inline-flex;
  align-items: center;
  transition: transform 0.2s ease;
}

.app-brand:hover {
  transform: scale(1.02);
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  border-radius: var(--ai-border-radius-sm);
  background: linear-gradient(135deg, #ffffff, #f1f5f9);
  border: 1px solid var(--ai-card-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.navbar .btn {
  border-radius: 50px;
  padding: 8px 20px;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1.5px solid transparent;
}

.navbar .btn-sm {
  padding: 6px 16px;
  font-size: 0.875rem;
}

.navbar .navbar-text {
  color: var(--ai-text-muted);
  font-weight: 500;
}

.navbar .btn-outline-secondary {
  border-color: var(--ai-card-border);
  color: var(--ai-text-muted);
  background: rgba(255, 255, 255, 0.7);
}

.navbar .btn-outline-secondary:hover {
  background: rgba(248, 250, 252, 0.9);
  border-color: var(--ai-primary);
  color: var(--ai-primary);
  transform: translateY(-1px);
}

.navbar .btn-outline-danger {
  border-color: #fecaca;
  color: #dc2626;
  background: rgba(254, 242, 242, 0.5);
}

.navbar .btn-outline-danger:hover {
  background: #fef2f2;
  border-color: #f87171;
  transform: translateY(-1px);
}

/* Modern Cards */
.card {
  border-radius: var(--ai-border-radius);
  border: 1px solid var(--ai-card-border);
  background: var(--ai-card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--ai-shadow);
  transition: all 0.3s ease;
  overflow: hidden;
}

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

.card-header {
  background: linear-gradient(135deg, var(--ai-primary), var(--ai-primary-2));
  border: none;
  color: white;
  font-weight: 600;
  padding: 1.5rem 2rem;
}

.card-body {
  padding: 2rem;
}

/* Modern Buttons */
.btn {
  border-radius: var(--ai-border-radius-sm);
  font-weight: 500;
  padding: 12px 24px;
  transition: all 0.2s ease;
  border: 1.5px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary,
.btn-gradient {
  background: linear-gradient(135deg, var(--ai-primary), var(--ai-primary-2));
  border: none;
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover,
.btn-gradient:hover {
  background: linear-gradient(135deg, #5855eb, #3b82f6);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
  border-radius: var(--ai-border-radius);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  border: none;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-success:hover {
  background: linear-gradient(135deg, #059669, #047857);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
}

.btn-secondary {
  background: linear-gradient(135deg, #64748b, #475569);
  border: none;
  color: white;
}

.btn-secondary:hover {
  background: linear-gradient(135deg, #475569, #334155);
  transform: translateY(-2px);
}

/* Modern Progress Bars */
.progress {
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
  border-radius: 50px;
  height: 12px;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.06);
}

.progress .progress-bar {
  border-radius: 50px;
  background: linear-gradient(135deg, var(--ai-accent), var(--ai-primary));
  transition: width 0.4s ease;
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.4);
}

/* Modern Form Controls */
.form-control, .form-select {
  border-radius: var(--ai-border-radius-sm);
  border: 1.5px solid var(--ai-card-border);
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(5px);
  transition: all 0.2s ease;
  font-weight: 500;
}

.form-control:focus, .form-select:focus {
  border-color: var(--ai-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
  background: rgba(255, 255, 255, 0.95);
  transform: translateY(-1px);
}

.form-label {
  font-weight: 600;
  color: var(--ai-text);
  margin-bottom: 8px;
}

/* Modern Modal */
.modal-content {
  border-radius: var(--ai-border-radius);
  border: 1px solid var(--ai-card-border);
  background: var(--ai-card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--ai-shadow-lg);
}

.modal-header {
  border-bottom: 1px solid var(--ai-card-border);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.9));
}

.modal-title {
  font-weight: 700;
  color: var(--ai-text);
}

/* Typography */
.small-muted {
  font-size: 0.875rem;
  color: var(--ai-text-muted);
  font-weight: 500;
}

.hero-title {
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--ai-primary), var(--ai-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
}

/* Image Thumbnails */
.thumb {
  max-width: 150px;
  height: auto;
  border: 2px solid var(--ai-card-border);
  border-radius: var(--ai-border-radius-sm);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.2s ease;
}

.thumb:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

/* Logo Styling */
.logo {
  max-width: 280px;
  height: auto;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
  transition: transform 0.2s ease;
}

.logo:hover {
  transform: scale(1.02);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

/* Modern List Styling */
.list-unstyled li {
  padding: 8px 0;
  display: flex;
  align-items: flex-start;
  font-weight: 500;
  color: var(--ai-text);
}

.list-unstyled li span:first-child {
  flex-shrink: 0;
  margin-right: 12px;
  font-size: 1.1rem;
}

/* Utility Classes */
.shadow-soft {
  box-shadow: var(--ai-shadow);
}

.shadow-lg {
  box-shadow: var(--ai-shadow-lg);
}

.text-gradient {
  background: linear-gradient(135deg, var(--ai-primary), var(--ai-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Sticky reminder shown during quiz */
.sticky-reminder {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 1055;
  -webkit-backdrop-filter: blur(10px);
}

.sticky-reminder .container {
  font-weight: 600;
}

.sticky-offset-bottom {
  padding-bottom: 64px !important; /* prevent content underlap when bar visible */
}
#btn-footer {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 400px;
  z-index: 1050;
  display: flex;
  justify-content: center;
}
/* --- Mobile: first screen fits and CTA visible --- */
@media (max-width: 576px) {
  main { padding-top: 8px; padding-bottom: 8px; }

  /* Tighter, smaller hero */
  .hero-title { font-size: 1.6rem; margin-bottom: 0.75rem; }
  .hero-title .logo { max-width: 160px !important; }
  .lead { font-size: 0.95rem !important; margin-bottom: 0.75rem !important; }

  /* Compact feature card */
  .glass-card { padding: 12px !important; }
  .list-unstyled li { padding: 6px 0; }

  /* Make the start panel fit the screen height */
  #start-quiz-panel { margin-top: 6px; margin-bottom: 6px; }
  #start-quiz-panel .card-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    /* Reserve space for navbar + margins; use dynamic viewport height */
    min-height: unset;
    overflow-y: auto;
  }
  /* Ensure CTA stays visible on first view */
  #start-quiz-panel .d-grid { margin-top: auto; }
  #start-quiz-panel .btn { padding: 14px 16px; font-size: 1rem; }

  /* Trim vertical gaps inside the hero */
  #start-quiz-panel .text-center.mb-4 { margin-bottom: 0.75rem !important; }
  #start-quiz-panel .row.mb-4 { margin-bottom: 0.75rem !important; }
  #start-quiz-panel > div {
        padding: 3rem 1rem !important;
    }
    #start-quiz-panel p.lead {
        margin-bottom: 0 !important;
    }
    #start-quiz-panel .glass-card h3 {
        margin-bottom: 0 !important;
    }
    #start-quiz-panel .glass-card ul li {
        margin-bottom: 0 !important;
    }
}

/* Reminder bar responsive styles */
.reminder-doctor-img {
  width: 200px;
  height: 200px;
}

.reminder-doctor-text {
  font-size: 24px;
}

/* Mobile styles for reminder bar */
@media (max-width: 768px) {
  .reminder-doctor-img {
    width: 67px !important;
    height: 67px !important;
  }
  
  .reminder-doctor-text {
    font-size: 17px !important;
  }
}