@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@400;500;600;700&display=swap');

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --accent: #06b6d4;
  --error: #df3f40;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --bg-main: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e3e6ea;
  --radius: 6px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --section-pad: 5rem 1rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; 
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-main);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Base Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-family: 'Outfit', sans-serif;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover, .btn-primary:focus {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover, .btn-secondary:focus {
  background: var(--bg-alt);
  border-color: var(--primary);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: white;
}

.btn-accent:hover {
  background: #0891b2;
  transform: translateY(-2px);
}

/* Outline for accessibility */
*:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

header.scrolled {
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 5px 0;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: height 0.3s;
}

header.scrolled .navbar {
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.logo i {
  font-size: 2rem;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-main);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary);
  transition: var(--transition);
}

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--text-main);
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 160px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7)), url('../images/hero_bg.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero-content {
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Section Titles */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Services Section */
.services-section {
  padding: var(--section-pad);
  background: var(--bg-alt);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: white;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--primary);
  color: white;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 500;
  font-size: 0.95rem;
}

.service-link:hover {
  color: var(--primary-dark);
}

.service-link i {
  transition: transform 0.3s;
}

.service-link:hover i {
  transform: translateX(4px);
}

/* Doctor Section */
.doctor-section {
  padding: var(--section-pad);
}

.doctor-wrapper {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.doctor-img {
  flex: 1;
  position: relative;
}

.doctor-img img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.doctor-exp-badge {
  position: absolute;
  bottom: -20px;
  left: 10%;
  background: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 15px;
  border-left: 4px solid var(--accent);
}

.doctor-exp-badge h4 {
  font-size: 2rem;
  color: var(--primary);
  line-height: 1;
}

.doctor-exp-badge p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.2;
}

.doctor-info {
  flex: 1;
}

.doctor-info h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.doctor-title {
  color: var(--accent);
  font-family: 'Outfit', sans-serif;
  font-weight: 500;
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.doctor-bio {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.doctor-creds {
  margin-bottom: 2rem;
}

.doctor-creds li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 0.8rem;
  color: var(--text-main);
}

.doctor-creds li i {
  color: var(--accent);
  margin-top: 4px;
}

/* About Section */
.about-section {
  padding: var(--section-pad);
  background: var(--bg-alt);
}

.about-wrapper {
  display: flex;
  align-items: center;
  gap: 4rem;
  flex-direction: row-reverse;
}

.about-img {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-img img {
  width: 100%;
  transition: transform 0.5s;
}

.about-img:hover img {
  transform: scale(1.05);
}

.about-content {
  flex: 1;
}

.about-highlights {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.highlight-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.1);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.highlight-item p {
  font-weight: 500;
  font-family: 'Outfit', sans-serif;
}

/* Reviews Section */
.reviews-section {
  padding: var(--section-pad);
}

.reviews-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: white;
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.review-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.stars {
  color: #fbbf24;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.review-text {
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 1.5rem;
}

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

.reviewer-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--primary);
  font-size: 1.2rem;
  border: 1px solid var(--border);
}

.reviewer-info h4 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.reviewer-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* FAQ Section */
.faq-section {
  padding: var(--section-pad);
  background: var(--bg-alt);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-main);
  text-align: left;
}

.faq-question i {
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  background: white;
}

.faq-answer p {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
}
.faq-item.active .faq-answer {
  max-height: 200px;
}

/* Contact & Appointment Section */
.contact-section {
  padding: var(--section-pad);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.contact-info {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 3rem;
}

.contact-info h3 {
  color: white;
  font-size: 2rem;
  margin-bottom: 1rem;
}

.contact-info p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--accent);
}

.contact-item h4 {
  color: white;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.contact-item p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
}

.contact-map {
  width: 100%;
  height: 200px;
  border-radius: var(--radius);
  overflow: hidden;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.appointment-form {
  padding: 3rem;
  background: white;
}

.appointment-form h3 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-col-full {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
}

.form-control {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-main);
  transition: var(--transition);
  background: var(--bg-alt);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.error-message {
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 4px;
  display: none;
  position: absolute;
  bottom: -20px;
  left: 0;
}

.form-control.error {
  border-color: var(--error);
  background: rgba(223, 63, 64, 0.05);
}

.form-control.error + .error-message {
  display: block;
}

.appointment-form .btn-primary {
  width: 100%;
  padding: 14px;
  font-size: 1.1rem;
}

/* Footer */
footer {
  background: #111827;
  color: white;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: #9ca3af;
  margin-bottom: 1.5rem;
  max-width: 300px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-title {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: white;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #9ca3af;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 5px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 1rem;
  color: #9ca3af;
}

.footer-contact i {
  color: var(--accent);
  margin-top: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #6b7280;
  font-size: 0.9rem;
}

/* Animations (Intersection Observer targets) */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* Form Submit Status */
.form-status {
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  display: none;
  font-weight: 500;
}

.form-status.success {
  display: block;
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.form-status.error {
  display: block;
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* Responsive */
@media (max-width: 992px) {
  .hero h1 { font-size: 2.8rem; }
  .doctor-wrapper, .about-wrapper { flex-direction: column; gap: 2rem; }
  .contact-wrapper { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: white;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: var(--transition);
  }

  .nav-links.active {
    left: 0;
  }
  
  .nav-cta {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero { padding: 120px 0 60px; text-align: center; }
  .hero-content { margin: 0 auto; }
  .hero-btns { justify-content: center; }
  
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}