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

body {
  font-family: 'Poppins', sans-serif;
  color: #222;
  background: #fdf6fb;
  line-height: 1.6;
}

/* Navbar */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 200;
  padding: 15px 0;
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  font-weight: 700;
  font-size: 1.5em;
  color: #fff;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 25px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.6);
  transition: all 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
  color: #ffd700;
}

/* Navbar when scrolled */
header.scrolled {
  background: rgba(255,255,255,0.95);
  box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

header.scrolled nav ul li a {
  color: #0078ff;
  text-shadow: none;
}

/* Hero Section */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  background: url('sf.jpg') no-repeat center center;
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  text-align: center;
}

.hero .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255,0,150,0.25), rgba(0,200,255,0.25), rgba(0,255,150,0.25));
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Floating shapes */
.floating-shapes .shape {
  position: absolute;
  opacity: 0.2;
  animation: float 12s infinite;
}

.floating-shapes .circle { width: 50px; height: 50px; border-radius: 50%; background: #ff4081; top: 20%; left: 15%; }
.floating-shapes .triangle { width: 0; height: 0; border-left: 25px solid transparent; border-right: 25px solid transparent; border-bottom: 50px solid #00c8ff; top: 50%; left: 70%; }
.floating-shapes .square { width: 50px; height: 50px; background: #00ff99; top: 75%; left: 40%; }

@keyframes float {
  0% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(180deg); }
  100% { transform: translateY(0) rotate(360deg); }
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 600px;
  padding: 30px;
  background: rgba(255,255,255,0.85);
  border-radius: 15px;
}

.hero h1 { font-size: 3em; color: #ff4081; margin-bottom: 10px; }
.hero p { font-size: 1.3em; margin-bottom: 15px; }
.social-links a { color: #ff4081; margin: 0 5px; text-decoration: none; }
.social-links a:hover { text-decoration: underline; }

/* Content Sections */
.content-section {
  max-width: 1000px;
  margin: 100px auto;
  padding: 50px 30px;
  background: linear-gradient(145deg, #fff0f5, #f0fff0);
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.content-section h2 { color: #ff4081; margin-bottom: 20px; }

button {
  background: #ff4081;
  color: #fff;
  padding: 12px 25px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s;
}
button:hover { background: #ff66a1; }

/* Marquee */
.marquee-container {
  overflow: hidden;
  background: #fff4f8;
  border-radius: 12px;
  padding: 15px;
  margin-top: 20px;
}

.marquee {
  display: inline-block;
  animation: scroll 18s linear infinite;
}

.marquee img {
  height: 100px;
  margin: 0 25px;
  vertical-align: middle;
}

@keyframes scroll {
  0% { transform: translateX(0%); }
  100% { transform: translateX(-100%); }
}

/* Footer */
footer {
  text-align: center;
  padding: 35px 10px;
  background: linear-gradient(90deg, #ff4081, #00c8ff, #00ff99);
  color: #fff;
  margin-top: 100px;
  font-weight: 500;
  letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 768px) {
  nav ul { flex-wrap: wrap; justify-content: center; }
  .hero h1 { font-size: 2em; }
  .marquee img { height: 70px; }
  .content-section { margin: 60px 20px; padding: 40px 20px; }
}