:root {
  --primary: #0A5C63; /* Crisp Deep Dental Teal */
  --primary-light: #117881;
  --secondary: #E4F6F8; /* Fresh Light Mint / Ice Tint */
  --accent: #00A8E8; /* Vibrant Dental Cyan Blue (Matches Logo) */
  --accent-hover: #0087BA;
  --text-dark: #1E293B;
  --text-light: #64748B;
  --bg-color: #F8FAFC;
  --white: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.88);
  --glass-border: rgba(255, 255, 255, 0.4);
  --shadow: 0 10px 30px rgba(10, 92, 99, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header & Navbar */
header {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 90px;
}

.logo img {
  height: 80px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--text-dark);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

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

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

.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white) !important;
  box-shadow: 0 4px 15px rgba(13, 92, 99, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 92, 99, 0.4);
}

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

/* Hamburger menu */
.hamburger {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--primary);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 90px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.7) 50%, rgba(255,255,255,0) 100%);
  z-index: -1;
}

.hero-content {
  max-width: 600px;
  animation: fadeUp 1s ease-out forwards;
}

.hero-subtitle {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
  margin-bottom: 1rem;
  display: block;
}

.hero h1 {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 2rem;
}

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

/* Sections */
.section {
  padding: 6rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-title p {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Services Snippet inside Index */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.02);
}

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

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

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

.service-icon {
  width: 70px;
  height: 70px;
  background: var(--secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: var(--primary);
}

.service-card h3 {
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

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

.read-more {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.read-more:hover {
  color: var(--accent);
}

/* Split Section (About Snippet) */
.split-section {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.split-content, .split-image {
  flex: 1;
}

.split-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow);
  object-fit: cover;
}

.split-image {
  position: relative;
}

.split-image::after {
  content: '';
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 50%;
  height: 50%;
  background: var(--secondary);
  border-radius: 20px;
  z-index: -1;
}

/* Footer */
footer {
  background: var(--primary);
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h3 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.footer-col p, .footer-col ul {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.8rem;
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

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

.social-links a:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

/* Page Headers (for internal pages) */
.page-header {
  padding: 150px 0 80px;
  background: var(--primary);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('assets/clinic_interior.png') center/cover;
  opacity: 0.15;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  color: var(--white);
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

/* Contact Page Specifics */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 15px;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

a.contact-info-card {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

a.contact-info-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
}

.contact-info-card i {
  font-size: 1.8rem;
  color: var(--accent);
  background: var(--secondary);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.whatsapp-card i.fa-whatsapp {
  color: #25D366;
  background: rgba(37, 211, 102, 0.12);
}

.whatsapp-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: #25D366;
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 0.2rem;
}

.whatsapp-card:hover .whatsapp-link-btn {
  text-decoration: underline;
}

.contact-form {
  background: var(--white);
  padding: 3rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 1rem;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  transition: all 0.3s;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 92, 99, 0.1);
}

/* Utilities & Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

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

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero h1 { font-size: 3rem; }
  .split-section { flex-direction: column; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: block; }
  .nav-links {
    position: fixed;
    top: 90px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 90px);
    background: var(--white);
    flex-direction: column;
    align-items: center;
    padding-top: 3rem;
    transition: 0.4s ease;
  }
  .nav-links.active { left: 0; }
  .hero h1 { font-size: 2.5rem; }
  .hero-overlay { background: rgba(255,255,255,0.85); }
}