/* ==========================================================================
   Smile Concern Selector - Premium Dental Clinic Design System
   ========================================================================== */

:root {
  /* Color Palette - Dental Sky & Arctic Teal */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  --teal-50: #f0fdfa;
  --teal-100: #ccfbf1;
  --teal-200: #99f6e4;
  --teal-400: #2dd4bf;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-700: #0f766e;

  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --amber-200: #fde68a;
  --amber-500: #f59e0b;
  --amber-700: #b45309;
  --amber-900: #78350f;

  --emerald-50: #ecfdf5;
  --emerald-500: #10b981;
  --emerald-700: #047857;

  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  --surface-white: #ffffff;
  --surface-card: #ffffff;
  --surface-subtle: #f8fafc;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.06), 0 1px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 20px -4px rgba(14, 165, 233, 0.10), 0 4px 10px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 16px 32px -6px rgba(14, 165, 233, 0.14), 0 6px 14px -3px rgba(15, 23, 42, 0.06);
  --shadow-xl: 0 24px 48px -12px rgba(14, 165, 233, 0.18), 0 12px 24px -4px rgba(15, 23, 42, 0.08);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 400ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: #f8fbfe;
  background-image: 
    radial-gradient(at 0% 0%, rgba(224, 242, 254, 0.5) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(204, 251, 241, 0.35) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--slate-800);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Clinic Navigation */
.site-header {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.brand-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary-500), var(--teal-500));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
  transition: transform var(--transition-spring);
}

.brand-badge:hover .brand-logo-icon {
  transform: scale(1.05) rotate(-2deg);
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--slate-900);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.brand-tagline {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary-600);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  border-radius: var(--radius-full);
  color: var(--primary-700);
  font-size: 0.78rem;
  font-weight: 600;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--teal-500);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.2);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

.header-btn {
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-700);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.header-btn:hover {
  background: var(--primary-50);
  color: var(--primary-600);
  border-color: var(--primary-200);
}

.version-nav-link {
  font-size: 0.78rem;
  color: var(--slate-600);
  text-decoration: none;
  font-weight: 700;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  background: var(--surface-white);
  transition: all var(--transition-fast);
}

.version-nav-link:hover {
  background: var(--primary-50);
  color: var(--primary-600);
  border-color: var(--primary-300);
}

/* Main Content Area */
.app-main {
  flex: 1;
  padding: 2.5rem 0 4rem;
}

/* View Sections */
.view-section {
  display: none;
  animation: fadeIn 350ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.view-section.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero Section */
.welcome-hero {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  color: var(--primary-700);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero-title .highlight-text {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--teal-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--slate-600);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.search-filter-bar {
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1.1rem;
  color: var(--slate-400);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.875rem 1.1rem 0.875rem 2.85rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  background: var(--surface-white);
  box-shadow: var(--shadow-sm);
  color: var(--slate-800);
  outline: none;
  transition: all var(--transition-normal);
}

.search-input:focus {
  border-color: var(--primary-400);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.15);
}

.search-clear-btn {
  position: absolute;
  right: 0.85rem;
  background: none;
  border: none;
  color: var(--slate-400);
  cursor: pointer;
  padding: 0.25rem;
  display: none;
}

.search-clear-btn.visible {
  display: block;
}

/* Concerns Grid */
.concerns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.concern-card {
  background: var(--surface-white);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-spring);
  box-shadow: var(--shadow-sm);
  user-select: none;
  overflow: hidden;
}

.concern-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-400), var(--teal-400));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.concern-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

.concern-card:hover::before {
  opacity: 1;
}

.concern-card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-400);
}

/* Card Visual Illustration Preview */
.concern-card-preview-stage {
  width: 100%;
  height: 128px;
  background: linear-gradient(135deg, #f8fbfe 0%, #edf6fd 100%);
  border: 1px solid var(--primary-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 1.25rem;
  transition: all var(--transition-normal);
}

.concern-card:hover .concern-card-preview-stage {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-color: var(--primary-300);
}

.card-badge-pill {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--slate-600);
  backdrop-filter: blur(4px);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.concern-card-preview-stage svg {
  width: 100%;
  height: 100%;
  max-width: 220px;
  max-height: 110px;
  filter: drop-shadow(0 4px 8px rgba(15, 23, 42, 0.06));
  transition: transform var(--transition-spring);
}

.concern-card:hover .concern-card-preview-stage svg {
  transform: scale(1.05);
}

/* Micro-animations inside Card SVGs */
@keyframes chipFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-4px) rotate(6deg); }
}

.anim-chip-fragment {
  animation: chipFloat 2.2s ease-in-out infinite;
}

@keyframes sparkleGlow {
  0%, 100% { opacity: 0.4; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.2); }
}

.anim-sparkle {
  transform-origin: center;
  animation: sparkleGlow 2s ease-in-out infinite;
}

@keyframes gapPulseLeft {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-3px); }
}

.anim-gap-left {
  animation: gapPulseLeft 2.5s ease-in-out infinite;
}

@keyframes gapPulseRight {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(3px); }
}

.anim-gap-right {
  animation: gapPulseRight 2.5s ease-in-out infinite;
}

@keyframes toothTilt {
  0%, 100% { transform: rotate(12deg); }
  50% { transform: rotate(5deg); }
}

.anim-tilt-tooth {
  transform-origin: 90px 20px;
  animation: toothTilt 2.8s ease-in-out infinite;
}

@keyframes missingPulse {
  0%, 100% { opacity: 0.3; stroke-width: 1.5px; }
  50% { opacity: 0.9; stroke-width: 2.5px; }
}

.anim-missing-slot {
  animation: missingPulse 2.2s ease-in-out infinite;
}

@keyframes wornPulse {
  0%, 100% { stroke-opacity: 0.5; }
  50% { stroke-opacity: 1; }
}

.anim-worn-alert {
  animation: wornPulse 2s ease-in-out infinite;
}

.concern-card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}

.concern-card-desc {
  font-size: 0.875rem;
  color: var(--slate-500);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex: 1;
}

.concern-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding-top: 1rem;
  border-top: 1px solid var(--slate-100);
}

.concern-options-count {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary-600);
  background: var(--primary-50);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.concern-arrow-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--slate-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-400);
  transition: all var(--transition-fast);
}

.concern-card:hover .concern-arrow-icon {
  background: var(--primary-500);
  color: #fff;
  transform: translateX(3px);
}

/* Home Patient Education Banner */
.education-preview-strip {
  background: linear-gradient(135deg, #ffffff 0%, var(--primary-50) 100%);
  border: 1px solid var(--primary-100);
  border-radius: var(--radius-xl);
  padding: 2rem 2.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 2rem;
}

.preview-strip-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal-500), var(--primary-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(13, 148, 136, 0.25);
}

.preview-strip-content h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.35rem;
}

.preview-strip-content p {
  font-size: 0.9rem;
  color: var(--slate-600);
}

/* ==========================================================================
   RESULTS / DETAIL VIEW SECTION
   ========================================================================== */

.results-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--slate-200);
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  color: var(--slate-700);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-xs);
}

.back-btn:hover {
  background: var(--primary-50);
  color: var(--primary-700);
  border-color: var(--primary-200);
  transform: translateX(-2px);
}

.nav-actions-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.compare-btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--teal-600), var(--teal-700));
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
  transition: all var(--transition-fast);
}

.compare-btn-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(13, 148, 136, 0.35);
}

.print-summary-btn {
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  color: var(--slate-700);
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.print-summary-btn:hover {
  background: var(--slate-100);
}

/* Quick Concern Selector Bar */
.quick-switcher-bar {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  margin-bottom: 2rem;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-200) transparent;
}

.quick-switcher-bar::-webkit-scrollbar {
  height: 4px;
}

.quick-switcher-bar::-webkit-scrollbar-thumb {
  background: var(--primary-200);
  border-radius: 4px;
}

.quick-pill {
  white-space: nowrap;
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  padding: 0.45rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.quick-pill:hover {
  border-color: var(--primary-300);
  color: var(--primary-600);
  background: var(--primary-50);
}

.quick-pill.active {
  background: var(--primary-600);
  color: #fff;
  border-color: var(--primary-600);
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
}

/* Concern Header Box */
.concern-header-box {
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}

.concern-header-box::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.concern-meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-700);
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.concern-detail-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.concern-detail-explanation {
  font-size: 1.05rem;
  color: var(--slate-600);
  max-width: 820px;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.concern-key-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--slate-100);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--slate-700);
}

.stat-item-icon {
  color: var(--teal-600);
}

/* ==========================================================================
   ANIMATED VISUAL DEMONSTRATION BOX
   ========================================================================== */

.visual-demo-card {
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
}

.visual-demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.visual-demo-title-group h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
}

.visual-demo-title-group p {
  font-size: 0.85rem;
  color: var(--slate-500);
}

.visual-demo-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.demo-view-toggle-btn {
  background: var(--slate-100);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--slate-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.demo-view-toggle-btn.active {
  background: var(--primary-600);
  color: #fff;
  border-color: var(--primary-600);
}

.demo-play-btn {
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-700);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.demo-play-btn:hover {
  background: var(--primary-50);
}

/* Stage Canvas / SVG Container */
.visual-stage-container {
  position: relative;
  background: linear-gradient(180deg, #f8fafc 0%, #edf7fc 100%);
  border: 1px solid var(--primary-100);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.visual-graphic-wrapper {
  width: 100%;
  max-width: 520px;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-graphic-wrapper svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 8px 16px rgba(15, 23, 42, 0.06));
}

/* Interactive Transformation Slider */
.visual-slider-controls {
  width: 100%;
  max-width: 480px;
  margin-top: 1.5rem;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--slate-600);
  margin-bottom: 0.4rem;
}

.slider-label-row .before-label {
  color: var(--amber-700);
}

.slider-label-row .after-label {
  color: var(--teal-700);
}

.transformation-range-input {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, #cbd5e1 0%, var(--primary-300) 50%, var(--teal-400) 100%);
  outline: none;
  cursor: pointer;
}

.transformation-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--surface-white);
  border: 3px solid var(--primary-600);
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.transformation-range-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.transformation-range-input::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--surface-white);
  border: 3px solid var(--primary-600);
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  cursor: pointer;
}

.visual-stage-caption {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--slate-500);
  text-align: center;
  font-style: italic;
}

/* ==========================================================================
   TREATMENT CARDS GRID
   ========================================================================== */

.treatments-section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.treatments-section-subtitle {
  font-size: 0.95rem;
  color: var(--slate-500);
  margin-bottom: 1.75rem;
}

.treatment-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.treatment-card {
  background: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-normal);
}

.treatment-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

.treatment-card-header {
  margin-bottom: 1rem;
}

.treatment-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.treatment-type-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: var(--slate-100);
  color: var(--slate-700);
}

.tag-orthodontic { background: var(--primary-50); color: var(--primary-700); border: 1px solid var(--primary-200); }
.tag-cosmetic { background: #fdf4ff; color: #a21caf; border: 1px solid #f5d0fe; }
.tag-restorative { background: var(--teal-50); color: var(--teal-700); border: 1px solid var(--teal-200); }
.tag-preventative { background: var(--emerald-50); color: var(--emerald-700); border: 1px solid #a7f3d0; }

.compare-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--slate-500);
  cursor: pointer;
  user-select: none;
}

.compare-checkbox-label input {
  accent-color: var(--teal-600);
  cursor: pointer;
}

.treatment-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
  line-height: 1.3;
}

.treatment-one-liner {
  font-size: 0.9rem;
  color: var(--slate-600);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

/* Treatment Spec Mini Badges */
.treatment-specs-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--slate-50);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.spec-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
}

.spec-key {
  color: var(--slate-500);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.spec-val {
  font-weight: 600;
  color: var(--slate-800);
}

.treatment-card-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-learn-more {
  flex: 1;
  background: var(--primary-50);
  color: var(--primary-700);
  border: 1px solid var(--primary-200);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.btn-learn-more:hover {
  background: var(--primary-600);
  color: #fff;
  border-color: var(--primary-600);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

/* ==========================================================================
   PATIENT EDUCATION PANEL ("What you should know")
   ========================================================================== */

.patient-education-panel {
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
  border: 1px solid var(--primary-200);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3.5rem;
}

.panel-heading-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.panel-badge-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--primary-600);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
}

.panel-heading-row h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--slate-900);
}

.education-pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.pillar-item {
  background: var(--surface-white);
  border: 1px solid var(--primary-100);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-xs);
}

.pillar-number {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-500);
  margin-bottom: 0.5rem;
}

.pillar-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.4rem;
}

.pillar-text {
  font-size: 0.875rem;
  color: var(--slate-600);
  line-height: 1.5;
}

.clinical-disclaimer-banner {
  background: var(--amber-50);
  border: 1px solid var(--amber-200);
  border-left: 4px solid var(--amber-500);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.disclaimer-icon {
  color: var(--amber-700);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.disclaimer-text {
  font-size: 0.85rem;
  color: var(--amber-900);
  line-height: 1.5;
  font-weight: 500;
}

/* ==========================================================================
   CALL TO ACTION (CTA) SECTION
   ========================================================================== */

.expert-cta-section {
  background: linear-gradient(135deg, var(--slate-900) 0%, #082f49 100%);
  border-radius: var(--radius-xl);
  padding: 3rem 2.5rem;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin-bottom: 2rem;
}

.expert-cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.cta-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-300);
  margin-bottom: 0.5rem;
}

.cta-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.cta-desc {
  font-size: 1rem;
  color: var(--slate-300);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.cta-buttons-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn-cta-primary {
  background: linear-gradient(135deg, var(--primary-500), var(--teal-500));
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.4);
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.55);
}

.btn-cta-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-cta-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

/* Footer */
.site-footer {
  background: var(--surface-white);
  border-top: 1px solid var(--slate-200);
  padding: 2rem 0;
  margin-top: auto;
  text-align: center;
  font-size: 0.85rem;
  color: var(--slate-500);
}

/* ==========================================================================
   MODALS (Comparison, Learn More, Booking, Q&A)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
  display: flex;
  opacity: 1;
}

.modal-dialog {
  background: var(--surface-white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  transform: scale(0.96) translateY(10px);
  transition: transform var(--transition-spring);
}

.modal-backdrop.active .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-dialog-large {
  max-width: 960px;
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title-group h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--slate-900);
}

.modal-title-group p {
  font-size: 0.85rem;
  color: var(--slate-500);
}

.modal-close-btn {
  background: var(--slate-100);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--slate-200);
  color: var(--slate-900);
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--slate-200);
  background: var(--slate-50);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Comparison Table */
.comparison-table-wrapper {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--slate-200);
  font-size: 0.875rem;
}

.comparison-table th {
  background: var(--slate-50);
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--slate-900);
}

.comparison-table th:first-child {
  width: 25%;
}

.comparison-table tr:hover td {
  background: var(--primary-50);
}

/* Step by Step Timeline in Learn More Modal */
.procedure-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.5rem 0;
  position: relative;
  padding-left: 2rem;
}

.procedure-timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 11px;
  width: 2px;
  background: var(--primary-200);
}

.timeline-step {
  position: relative;
}

.step-bullet {
  position: absolute;
  left: -2rem;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-600);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--slate-900);
  margin-bottom: 0.2rem;
}

.step-desc {
  font-size: 0.85rem;
  color: var(--slate-600);
}

/* Booking Form Elements */
.booking-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-700);
}

.form-input,
.form-select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  background: var(--surface-white);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

/* Common Questions */
.qa-chips-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.qa-chip {
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  color: var(--primary-800);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.qa-chip:hover {
  background: var(--primary-600);
  color: #fff;
}

.qa-chip.active {
  background: var(--primary-600);
  border-color: var(--primary-600);
  color: #fff;
}

.qa-answer-panel {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  color: var(--slate-600);
  font-size: 0.9rem;
  line-height: 1.65;
  min-height: 88px;
}

.qa-answer-panel.answered {
  background: var(--surface-white);
  border-color: var(--primary-200);
  box-shadow: var(--shadow-xs);
}

.qa-answer-panel h4 {
  color: var(--slate-900);
  font-family: var(--font-heading);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.qa-answer-panel p {
  margin: 0;
}

.netlify-honeypot {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.optional-label {
  color: var(--slate-500);
  font-weight: 500;
}

.form-textarea {
  resize: vertical;
  min-height: 96px;
}

.form-status {
  display: none;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.5;
}

.form-status.success,
.form-status.error {
  display: block;
}

.form-status.success {
  color: #065f46;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
}

.form-status.error {
  color: #991b1b;
  background: #fef2f2;
  border: 1px solid #fecaca;
}

#appointmentForm {
  display: flex;
  flex-direction: column;
  min-height: 0;
  max-height: 90vh;
}

.btn-cta-primary:disabled {
  cursor: wait;
  opacity: 0.7;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .header-inner {
    gap: 0.5rem;
  }

  .brand-badge {
    gap: 0.5rem;
  }

  .brand-logo-icon {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .header-btn {
    padding: 0.45rem 0.75rem;
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .hero-title {
    font-size: 2rem;
  }
  
  .concern-header-box {
    padding: 1.5rem;
  }

  .concern-detail-title {
    font-size: 1.6rem;
  }

  .visual-demo-card {
    padding: 1.25rem;
  }

  .booking-form-grid {
    grid-template-columns: 1fr;
  }

  .form-group.full-width {
    grid-column: span 1;
  }

  .expert-cta-section {
    padding: 2rem 1.5rem;
  }

  .cta-title {
    font-size: 1.6rem;
  }

  .header-controls .mode-badge {
    display: none;
  }
}

/* Print Styles */
@media print {
  .site-header,
  .results-navigation,
  .quick-switcher-bar,
  .visual-demo-controls,
  .btn-learn-more,
  .compare-checkbox-label,
  .expert-cta-section,
  .site-footer,
  .modal-backdrop {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .concern-header-box,
  .visual-demo-card,
  .treatment-card,
  .patient-education-panel {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
  }
}

/* Realistic anatomical refinements carried forward from the previous version */
.concern-card-preview-stage {
  height: 136px;
  background: radial-gradient(circle at 50% 30%, #ffffff 0%, #f0f7fc 70%, #e2effa 100%);
  border: 1px solid rgba(14, 165, 233, 0.2);
  box-shadow: inset 0 2px 6px rgba(14, 165, 233, 0.05);
}

.concern-card-preview-stage svg {
  max-width: 230px;
  max-height: 120px;
  filter: drop-shadow(0 6px 12px rgba(15, 23, 42, 0.08));
}

.tooth-crown {
  filter: drop-shadow(0 2px 3px rgba(15, 23, 42, 0.08));
  transition: all 0.3s ease;
}

.tooth-reflection {
  opacity: 0.65;
  pointer-events: none;
}

.tooth-incisal-halo {
  opacity: 0.45;
  pointer-events: none;
}

.gingiva-scallop {
  filter: drop-shadow(0 2px 4px rgba(244, 63, 94, 0.15));
}