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

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
  color: #333;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  color: #1a1a2e;
}

h2 {
  font-size: 2.8rem;
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

h2:after {
  content: '';
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, #5b6ef7, #a78bfa);
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 3px;
}

/* Navbar */
/*
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid #e5e7eb;
}*/

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  background: linear-gradient(90deg, #5b6ef7, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
/*
.nav-links a {
  margin-left: 2rem;
  text-decoration: none;
  color: #4b5563;
  font-weight: 500;
  transition: color 0.3s;
}*/

.nav-links a:hover {
  color: #5b6ef7;
}

.register-btn {
  background: linear-gradient(90deg, #5b6ef7, #7c3aed);
  color: white !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
}

/* Hero */
.hero {
  height: 100vh;
  min-height: 700px;
  background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.5)), 
              url('https://source.unsplash.com/random/1920x1080/?ai,women,technology') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  position: relative;
}

.hero-content {
  max-width: 800px;
  padding: 0 20px;
}

.hero-title {
  font-size: 4.5rem;
  margin-bottom: 1rem;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.event-info {
  font-size: 1.3rem;
  margin: 1.5rem 0;
  font-weight: 500;
}

.cta-button {
  background: linear-gradient(90deg, #5b6ef7, #a78bfa);
  color: white;
  border: none;
  padding: 16px 40px;
  font-size: 1.2rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.4s ease;
  box-shadow: 0 10px 30px rgba(91, 110, 247, 0.4);
}

.cta-button:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(91, 110, 247, 0.5);
}

/* Sections */
.section, .mission-section, .register-section {
  padding: 100px 20px;
}

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

/* Mission Box with Hover Effect */
.mission-box {
  background: white;
  padding: 50px;
  border-radius: 20px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
  font-size: 1.15rem;
  line-height: 1.8;
  color: #444;
  max-width: 900px;
  margin: 0 auto;
  transition: all 0.5s ease;
  border: 1px solid transparent;
}

.mission-box:hover {
  background: #f8fbff;
  box-shadow: 0 25px 60px rgba(91, 110, 247, 0.12);
  border-color: #c4d0ff;
  transform: translateY(-8px);
}

/* Cards */
.cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1300px;
  margin: 40px auto;
  padding: 0 20px;
}

/* ==================== UPDATED CARD STYLE (Like the Image) ==================== */
.card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  padding: 25px 20px;
  text-align: center;
  transition: all 0.4s ease;
  height: 100%;                  /* Makes all cards same height */
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card:hover {
  transform: translateY(-12px);
  box-shadow: 0 20px 40px rgba(91, 110, 247, 0.15);
}

/* Circular Images - Perfectly Aligned */
.card img {
  width: 150px;               /* Fixed size for all images */
  height: 150px;
  object-fit: cover;
  border-radius: 50%;         /* Makes image circular */
  border: 5px solid #f0f4ff;
  margin-bottom: 20px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  transition: all 0.4s ease;
}

.card:hover img {
  transform: scale(1.05);
  border-color: #a78bfa;
}

/* Name - Bold */
.card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 8px;
}

/* Designation / Info - Normal text */
.card p {
  font-size: 0.98rem;
  color: #555;
  line-height: 1.5;
  flex-grow: 1;               /* Helps with alignment */
}

.links {
  padding: 0 20px 25px;
  font-size: 0.95rem;
}

.links a {
  color: #5b6ef7;
  text-decoration: none;
}

.links a:hover {
  text-decoration: underline;
}

/* Registration */
.register-section {
  background: linear-gradient(135deg, #5b6ef7, #7c3aed);
  color: white;
  text-align: center;
}

.register-section h2 {
  color: white;
}

.section-description {
  font-size: 1.3rem;
  max-width: 600px;
  margin: 0 auto 40px;
  opacity: 0.9;
}

.big-register-btn {
  background: white;
  color: #5b6ef7;
  border: none;
  padding: 20px 60px;
  font-size: 1.4rem;
  font-weight: 700;
  border-radius: 60px;
  cursor: pointer;
  transition: all 0.4s;
  display: inline-flex;
  align-items: center;
  gap: 15px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.big-register-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.big-register-btn .arrow {
  transition: transform 0.3s;
}

.big-register-btn:hover .arrow {
  transform: translateX(8px);
}

/* Footer */
footer {
  background: #1a1a2e;
  color: #aaa;
  text-align: center;
  padding: 60px 20px 30px;
}

footer p {
  margin-bottom: 10px;
}

/* Footer Link - AI Explain You Science */
.footer-link {
  color: #a5b4fc;           /* Light Indigo - Looks beautiful on dark background */
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.footer-link:hover {
  color: #c4d0ff;           /* Brighter on hover */
  text-decoration: underline;
}
/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 3.2rem; }
  h2 { font-size: 2.2rem; }
  .mission-box { padding: 35px 25px; }
}
/* Scroll Reveal Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}

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

/* Staggered delay for cards */
.card:nth-child(1) { transition-delay: 0.1s; }
.card:nth-child(2) { transition-delay: 0.2s; }
.card:nth-child(3) { transition-delay: 0.3s; }

/* Hero title animation */
.hero-content {
  animation: fadeInDown 1.2s ease forwards;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* Logo Container */
/*
.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}*/

.brand-logo {
  width: 55px;           /* Change size as needed */
  height: 55px;
  object-fit: contain;
  border-radius: 15px;
}

/* Logo Text Styling */
.logo-text {
  font-size: 1.85rem;
  margin: 0;
  background: linear-gradient(90deg, #5b6ef7, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
  font-family: 'Playfair Display', serif;
}

/* Hover effect on entire logo */
.logo-container:hover .brand-logo {
  transform: scale(1.08) rotate(5deg);
  transition: all 0.4s ease;
}

/* Hover Effect ONLY on About, Speakers, and Organizers */
.nav-links a:not(.register-btn) {
  position: relative;
  padding: 8px 0;
  transition: color 0.3s ease;
}

.nav-links a:not(.register-btn):hover {
  color: #5b6ef7;
}

/* Underline animation - Only for normal links */
.nav-links a:not(.register-btn)::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2.5px;
  bottom: 0;
  left: 0;
  background: linear-gradient(90deg, #5b6ef7, #a78bfa);
  transition: width 0.4s ease;
  border-radius: 2px;
}

.nav-links a:not(.register-btn):hover::after {
  width: 100%;
}

/* Register Now Button - Clean hover without underline */
/*
.register-btn {
  background: linear-gradient(90deg, #5b6ef7, #7c3aed);
  color: white !important;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.5px;
  transition: all 0.4s ease;
  box-shadow: 0 6px 20px rgba(91, 110, 247, 0.35);
  white-space: nowrap;
  border: none;
  cursor: pointer;
}*/

.register-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(91, 110, 247, 0.45);
  background: linear-gradient(90deg, #7c3aed, #a78bfa);
}

/* Bootstrap Navbar Customizations */
.navbar {
  padding: 1rem 0;
}

.logo-container {
  gap: 10px;
}

.brand-logo {
  width: 45px;
  height: 45px;
  object-fit: contain;
}

.logo-text {
  font-size: 1.75rem;
  margin: 0;
  background: linear-gradient(90deg, #5b6ef7, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: 'Playfair Display', serif;
}

/* Register Button */
.register-btn {
  background: linear-gradient(90deg, #5b6ef7, #7c3aed);
  color: white !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
  transition: all 0.4s ease;
}

.register-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(91, 110, 247, 0.4);
  background: linear-gradient(90deg, #7c3aed, #a78bfa);
}

/* Mobile improvements */
@media (max-width: 992px) {
  .register-btn {
    margin-top: 10px;
    width: 100%;
    text-align: center;
  }
}