@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #6c5ce7;
  --secondary: #fd79a8;
  --accent: #fdcb6e;
  --dark: #2d3436;
  --light: #dfe6e9;
  --white: #ffffff;
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-5: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-6: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  --gradient-7: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
  --gradient-8: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
  --shadow: 0 10px 30px rgba(0,0,0,0.1);
  --shadow-hover: 0 15px 40px rgba(0,0,0,0.15);
  --radius: 16px;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: var(--gradient-6);
  color: var(--dark);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* Header & Navigation */
header {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  max-width: 1300px;
  margin: 0 auto;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 25px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--dark);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  position: relative;
  padding: 5px 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  transition: width 0.3s ease;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--dark);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  background: var(--gradient-1);
  padding: 100px 0 120px;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.95;
  max-width: 600px;
  margin: 0 auto 30px;
}

.hero .cta-btn {
  display: inline-block;
  padding: 15px 40px;
  background: var(--white);
  color: var(--primary);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 5px 20px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
}

.hero .cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

/* Section Styles */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title p {
  color: #636e72;
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-bg-1 { background: var(--white); }
.section-bg-2 { background: var(--gradient-6); }
.section-bg-3 { background: var(--gradient-8); }
.section-bg-4 { background: var(--gradient-7); }

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid rgba(255,255,255,0.5);
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--gradient-1);
  color: var(--white);
  box-shadow: 0 5px 15px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(108, 92, 231, 0.4);
}

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

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

/* Footer */
footer {
  background: var(--gradient-1);
  color: var(--white);
  padding: 40px 0 20px;
  text-align: center;
}

footer p {
  opacity: 0.9;
  margin-bottom: 10px;
}

/* Utility */
.text-center { text-align: center; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }

/* Image Placeholder */
.img-placeholder {
  width: 100%;
  height: 250px;
  background: var(--gradient-3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
  margin-bottom: 15px;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 4px;
  background: var(--gradient-1);
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 2px;
}

.timeline-item {
  padding: 20px 40px;
  position: relative;
  width: 50%;
}

.timeline-item.left { left: 0; text-align: right; }
.timeline-item.right { left: 50%; }

.timeline-item::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--white);
  border: 4px solid var(--primary);
  border-radius: 50%;
  top: 30px;
  z-index: 1;
}

.timeline-item.left::after { right: -10px; }
.timeline-item.right::after { left: -10px; }

/* Family Tree Placeholder */
.tree-container {
  background: var(--white);
  border-radius: var(--radius);
  padding: 60px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  min-height: 500px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.tree-node {
  padding: 20px 40px;
  border-radius: var(--radius);
  color: var(--white);
  font-weight: 600;
  margin: 10px;
  display: inline-block;
  box-shadow: var(--shadow);
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 1;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: var(--white);
}

.gallery-item:hover .overlay {
  opacity: 1;
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-1);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  box-shadow: var(--shadow);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: all 0.3s ease;
}

.back-to-top:hover {
  transform: translateY(-3px);
}

.back-to-top.visible {
  display: flex;
}

/* Active nav link */
.nav-links a.active {
  color: var(--primary);
}

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