/* Data Science Academy Styles */
/* Reset and Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: #333;
  overflow-x: hidden;
}
.container {
  max-width: 1200px;
}

/* Color Palette - Blue/Purple Theme */
:root {
  --primary-blue: #667eea;
  --primary-purple: #764ba2;
  --gradient: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  --light-bg: rgba(255,255,255,0.1);
  --glass-bg: rgba(255,255,255,0.25);
  --shadow: 0 8px 32px 0 rgba(31,38,135,0.37);
}

/* Navbar */
.navbar {
  background: transparent !important;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}
.navbar.scrolled {
  background: rgba(0,0,0,0.8) !important;
}
.navbar-brand {
  font-weight: 700;
  font-size: 1.8rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-link {
  font-weight: 500;
  margin: 0 1rem;
  transition: color 0.3s;
}
.nav-link:hover {
  color: var(--primary-blue) !important;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  background: var(--gradient);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 1000 100\" fill=\"none\"><defs><pattern id=\"grain\" width=\"100\" height=\"100\" patternUnits=\"userSpaceOnUse\"><circle cx=\"25\" cy=\"25\" r=\"1\" fill=\"white\" opacity=\"0.1\"/><circle cx=\"75\" cy=\"75\" r=\"1.5\" fill=\"white\" opacity=\"0.05\"/></pattern></defs><rect width=\"100%\" height=\"100%\" fill=\"url(%23grain)\"/></svg>');
  opacity: 0.3;
}
.hero-content {
  z-index: 2;
  position: relative;
}
.hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  color: white;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.hero p {
  font-size: 1.5rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 2rem;
  max-width: 600px;
}
.btn-primary-custom {
  background: var(--gradient);
  border: none;
  padding: 1rem 2.5rem;
  font-size: 1.2rem;
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s;
  box-shadow: var(--shadow);
}
.btn-primary-custom:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(102,126,234,0.4);
}

/* Glassmorphism Cards */
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2);
  box-shadow: var(--shadow);
  border-radius: 20px;
  transition: all 0.4s ease;
}
.card-glass:hover {
  transform: translateY(-10px);
  background: rgba(255,255,255,0.35);
}

/* Featured Courses Section */
.featured-courses {
  padding: 100px 0;
  background: #f8f9ff;
}
.course-card {
  transition: all 0.3s;
}
.course-card:hover {
  transform: scale(1.05);
}

/* Testimonials */
.testimonials {
  padding: 100px 0;
  background: var(--gradient);
}
.testimonial-item {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 2rem;
  margin: 1rem;
}

/* Footer */
footer {
  background: #1a1a2e;
  color: white;
  padding: 3rem 0 1rem;
}
.footer-links a {
  color: #ccc;
  transition: color 0.3s;
}
.footer-links a:hover {
  color: var(--primary-blue);
}

/* Chatbot */
.chatbot-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  z-index: 1000;
  cursor: pointer;
  transition: all 0.3s;
}
.chatbot-btn:hover {
  transform: scale(1.1);
}
.chatbot-window {
  position: fixed;
  bottom: 100px;
  right: 30px;
  width: 350px;
  height: 450px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: none;
  z-index: 1001;
  flex-direction: column;
}
.chat-header {
  background: var(--gradient);
  color: white;
  padding: 1rem;
  border-radius: 20px 20px 0 0;
  font-weight: 600;
}
.chat-messages {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  max-height: 300px;
}
.chat-input {
  padding: 1rem;
  border-top: 1px solid rgba(255,255,255,0.2);
  display: flex;
}
.chat-input input {
  flex: 1;
  border: none;
  padding: 0.75rem;
  border-radius: 25px;
  margin-right: 0.5rem;
  background: rgba(255,255,255,0.9);
}
.chat-input button {
  background: var(--gradient);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .chatbot-window {
    width: 90vw;
    right: 5vw;
  }
}

/* Loading Animation */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s;
}
.loader {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255,255,255,0.3);
  border-top: 5px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Additional fixes for linter */
[data-aos] {
  transition-duration: 0.8s;
}
[data-aos].aos-animate {
  opacity: 1;
}

</content>
</xai:function_call name="create_file">
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