/* ============================================================
   MyDocWorld — Design System & Styles
   Color Palette:
     Primary:    #0E7490  (teal-700)
     Primary-L:  #22D3EE  (cyan-400)
     Primary-XL: #E0F7FA  (cyan-50)
     Accent:     #F97316  (orange-500)
     Accent-L:   #FFF7ED  (orange-50)
     Surface:    #F8FAFC  (slate-50)
     Text:       #0F172A  (slate-900)
     Text-Muted: #64748B  (slate-500)
   ============================================================ */

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

:root {
  --clr-primary: #0E7490;
  --clr-primary-light: #22D3EE;
  --clr-primary-xlight: #E0F7FA;
  --clr-primary-dark: #0A5A6E;
  --clr-accent: #F97316;
  --clr-accent-light: #FFF7ED;
  --clr-surface: #F8FAFC;
  --clr-white: #FFFFFF;
  --clr-text: #0F172A;
  --clr-text-muted: #64748B;
  --clr-border: #E2E8F0;
  --clr-success: #10B981;
  --clr-warning: #FBBF24;

  --shadow-sm: 0 1px 3px rgba(14,116,144,.08);
  --shadow-md: 0 4px 16px rgba(14,116,144,.10);
  --shadow-lg: 0 8px 32px rgba(14,116,144,.12);
  --shadow-xl: 0 16px 48px rgba(14,116,144,.14);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);

  --container-max: 1200px;
  --nav-height: 72px;
}

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

body {
  font-family: var(--font-main);
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-text);
}
h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); letter-spacing: -.015em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--clr-primary-xlight);
  color: var(--clr-primary);
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto 48px;
}

.text-center { text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-size: .95rem;
  font-weight: 600;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.2), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: var(--clr-white);
  box-shadow: 0 4px 14px rgba(14,116,144,.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14,116,144,.35);
}

.btn-secondary {
  background: var(--clr-white);
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
}
.btn-secondary:hover {
  background: var(--clr-primary-xlight);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--clr-accent), #EA580C);
  color: var(--clr-white);
  box-shadow: 0 4px 14px rgba(249,115,22,.3);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249,115,22,.35);
}

.btn-sm {
  padding: 10px 20px;
  font-size: .85rem;
}

.btn-ghost {
  background: transparent;
  color: var(--clr-primary);
  padding: 10px 20px;
}
.btn-ghost:hover {
  background: var(--clr-primary-xlight);
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(226,232,240,.6);
  transition: all var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255,255,255,.95);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -.02em;
}

.nav-logo svg {
  width: 36px;
  height: 36px;
}

.nav-logo span {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 1001;
}
.nav-toggle span {
  display: block;
  height: 2.5px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--nav-height) + 60px) 0 80px;
  background: linear-gradient(160deg, var(--clr-white) 0%, var(--clr-primary-xlight) 50%, var(--clr-white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(34,211,238,.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(249,115,22,.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 560px;
}

.hero-content h1 {
  margin-bottom: 20px;
}

.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.1rem;
  color: var(--clr-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--clr-border);
}

.hero-stat strong {
  display: block;
  font-size: 1.6rem;
  color: var(--clr-primary);
  font-weight: 800;
}

.hero-stat span {
  font-size: .85rem;
  color: var(--clr-text-muted);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-illustration {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--clr-primary-xlight), rgba(34,211,238,.15));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-illustration svg {
  width: 65%;
  height: 65%;
  opacity: .9;
}

/* Floating elements around hero illustration */
.hero-float {
  position: absolute;
  background: var(--clr-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .82rem;
  font-weight: 600;
  animation: float 4s ease-in-out infinite;
  z-index: 2;
}

.hero-float:nth-child(2) { animation-delay: -1.5s; }
.hero-float:nth-child(3) { animation-delay: -3s; }

.hero-float-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.hero-float.top-right {
  top: 8%;
  right: -5%;
}
.hero-float.bottom-left {
  bottom: 12%;
  left: -8%;
}
.hero-float.mid-right {
  bottom: 35%;
  right: -12%;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- AI Symptom Checker ---------- */
.symptom-checker {
  padding: 100px 0;
  background: var(--clr-surface);
  position: relative;
}

.symptom-checker::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-border), transparent);
}

.symptom-card {
  max-width: 700px;
  margin: 0 auto;
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.symptom-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-light));
}

.symptom-card h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.symptom-card > p {
  color: var(--clr-text-muted);
  margin-bottom: 28px;
  font-size: .95rem;
}

.symptom-input-group {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.symptom-input-group input {
  flex: 1;
  padding: 14px 20px;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-full);
  font-size: .95rem;
  font-family: var(--font-main);
  transition: all var(--transition);
  outline: none;
  background: var(--clr-surface);
}
.symptom-input-group input:focus {
  border-color: var(--clr-primary);
  background: var(--clr-white);
  box-shadow: 0 0 0 4px rgba(14,116,144,.08);
}

.symptom-input-group input::placeholder {
  color: #94A3B8;
}

.symptom-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.symptom-tag {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--clr-primary-xlight);
  color: var(--clr-primary);
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.symptom-tag:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
}

/* Result card */
.symptom-result {
  display: none;
  padding: 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-primary-xlight), rgba(34,211,238,.06));
  border: 1px solid rgba(14,116,144,.12);
  margin-top: 20px;
  animation: slideUp .4s var(--transition);
}

.symptom-result.active { display: block; }

.symptom-result h4 {
  font-size: 1rem;
  color: var(--clr-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.symptom-result ul {
  margin-bottom: 16px;
  padding-left: 4px;
}
.symptom-result ul li {
  padding: 4px 0;
  font-size: .9rem;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.symptom-result ul li::before {
  content: '•';
  color: var(--clr-primary);
  font-weight: bold;
  font-size: 1.2rem;
}

.symptom-recommendation {
  padding: 14px 18px;
  background: var(--clr-white);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--clr-accent);
  font-size: .9rem;
  color: var(--clr-text);
}
.symptom-recommendation strong {
  color: var(--clr-accent);
}

.symptom-disclaimer {
  margin-top: 20px;
  padding: 12px 16px;
  background: var(--clr-accent-light);
  border-radius: var(--radius-sm);
  font-size: .78rem;
  color: var(--clr-text-muted);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.symptom-disclaimer svg {
  flex-shrink: 0;
  margin-top: 2px;
}

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

/* ---------- How It Works ---------- */
.how-it-works {
  padding: 100px 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

/* connecting line */
.steps-grid::before {
  content: '';
  position: absolute;
  top: 60px;
  left: calc(16.667% + 16px);
  right: calc(16.667% + 16px);
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary-light), var(--clr-primary), var(--clr-primary-light));
  opacity: .3;
  z-index: 0;
}

.step-card {
  text-align: center;
  padding: 40px 28px;
  border-radius: var(--radius-lg);
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(14,116,144,.2);
}

.step-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: var(--clr-white);
  font-size: 1.2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 4px 14px rgba(14,116,144,.25);
}

.step-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: var(--radius-md);
  background: var(--clr-primary-xlight);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.step-card h3 {
  margin-bottom: 10px;
}
.step-card p {
  color: var(--clr-text-muted);
  font-size: .92rem;
}

/* ---------- Find Doctors ---------- */
.find-doctors {
  padding: 100px 0;
  background: var(--clr-surface);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: .85rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  transition: all var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
  box-shadow: 0 4px 12px rgba(14,116,144,.25);
}

.doctors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.doctor-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  transition: all var(--transition);
  animation: fadeInCard .5s ease both;
}
.doctor-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.doctor-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 24px 0;
}

.doctor-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary-xlight), rgba(34,211,238,.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-primary);
  flex-shrink: 0;
  border: 3px solid var(--clr-white);
  box-shadow: var(--shadow-sm);
}

.doctor-info h3 {
  font-size: 1.05rem;
  margin-bottom: 2px;
}
.doctor-info .specialty {
  font-size: .82rem;
  color: var(--clr-text-muted);
}

.doctor-card-body {
  padding: 20px 24px;
}

.doctor-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.doctor-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-text);
}
.doctor-rating .stars {
  color: var(--clr-warning);
  letter-spacing: 1px;
}

.doctor-exp {
  font-size: .82rem;
  color: var(--clr-text-muted);
}

.doctor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.doctor-tag {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--clr-primary-xlight);
  color: var(--clr-primary);
  font-size: .72rem;
  font-weight: 500;
}

.doctor-card .btn {
  width: 100%;
}

@keyframes fadeInCard {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Pricing ---------- */
.pricing {
  padding: 100px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.price-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.price-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.price-card.popular {
  border: 2px solid var(--clr-primary);
  box-shadow: var(--shadow-xl);
  transform: scale(1.04);
}
.price-card.popular:hover {
  transform: scale(1.04) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 8px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: var(--clr-white);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.price-card.popular .price-content {
  margin-top: 24px;
}

.price-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.price-card h3 {
  margin-bottom: 8px;
}
.price-card .price-desc {
  color: var(--clr-text-muted);
  font-size: .88rem;
  margin-bottom: 24px;
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--clr-primary);
  margin-bottom: 4px;
}
.price-amount span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-text-muted);
}

.price-period {
  font-size: .82rem;
  color: var(--clr-text-muted);
  margin-bottom: 28px;
}

.price-features {
  text-align: left;
  margin-bottom: 32px;
}
.price-features li {
  padding: 8px 0;
  font-size: .9rem;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--clr-surface);
}
.price-features li:last-child { border: none; }
.price-features li svg {
  color: var(--clr-success);
  flex-shrink: 0;
}

.price-card .btn { width: 100%; }

/* ---------- Testimonials ---------- */
.testimonials {
  padding: 100px 0;
  background: var(--clr-surface);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--clr-border);
  transition: all var(--transition);
  position: relative;
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.testimonial-card .quote-mark {
  font-size: 3rem;
  line-height: 1;
  color: var(--clr-primary-light);
  opacity: .5;
  font-family: Georgia, serif;
  margin-bottom: 8px;
}

.testimonial-card p {
  color: var(--clr-text-muted);
  font-size: .92rem;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary-xlight), rgba(34,211,238,.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-primary);
}

.testimonial-name strong {
  font-size: .9rem;
  display: block;
}
.testimonial-name span {
  font-size: .78rem;
  color: var(--clr-text-muted);
}

.testimonial-stars {
  margin-left: auto;
  color: var(--clr-warning);
  font-size: .85rem;
  letter-spacing: 1px;
}

/* ---------- FAQ ---------- */
.faq {
  padding: 100px 0;
}

.faq-list {
  max-width: 740px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: rgba(14,116,144,.2); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--clr-text);
  text-align: left;
  background: var(--clr-white);
  transition: all var(--transition);
}
.faq-question:hover { background: var(--clr-surface); }

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--clr-primary-xlight);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--clr-primary);
  color: var(--clr-white);
}

.faq-item.active .faq-question {
  color: var(--clr-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.4,0,.2,1), padding .4s;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--clr-text-muted);
  font-size: .9rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--clr-text);
  color: rgba(255,255,255,.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: .9rem;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 300px;
}


.footer-col h4 {
  color: var(--clr-white);
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: .85rem;
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--clr-primary-light); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .8rem;
}

.footer-demo-note {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(249,115,22,.15);
  color: var(--clr-accent);
  font-size: .75rem;
  font-weight: 500;
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s cubic-bezier(.4,0,.2,1), transform .8s cubic-bezier(.4,0,.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity .8s cubic-bezier(.4,0,.2,1), transform .8s cubic-bezier(.4,0,.2,1);
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity .8s cubic-bezier(.4,0,.2,1), transform .8s cubic-bezier(.4,0,.2,1);
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s cubic-bezier(.4,0,.2,1), transform .6s cubic-bezier(.4,0,.2,1);
}
.reveal-stagger.visible > *:nth-child(1) { transition-delay: .05s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: .15s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: .25s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: .35s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: .40s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: .45s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: .50s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: .55s; opacity: 1; transform: translateY(0); }

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-illustration { max-width: 360px; }

  .hero-float.bottom-left { left: 2%; }
  .hero-float.mid-right { right: 0; }
  .hero-float.top-right { right: 5%; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .price-card.popular { transform: none; }
  .price-card.popular:hover { transform: translateY(-6px); }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--clr-white);
    padding: 32px 24px;
    gap: 20px;
    animation: slideDown .3s ease;
    z-index: 999;
  }

  .nav-links.mobile-open a {
    font-size: 1.1rem;
    padding: 8px 0;
  }

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

  .steps-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
  .steps-grid::before { display: none; }

  .testimonials-grid { grid-template-columns: 1fr; }

  .symptom-input-group { flex-direction: column; }
  .symptom-input-group .btn { width: 100%; }

  .symptom-card { padding: 32px 24px; }

  .hero-float { display: none; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: center; }
  .doctors-grid { grid-template-columns: 1fr; }
}