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

body {
    font-family: 'Arial', sans-serif;
    background: #0a0a0a;
    color: white;
    overflow-x: hidden;
}

/* Animated background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(45deg, #1a1a2e, #16213e, #0f3460);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

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

/* Floating particles */
.particle {
    position: fixed;
    width: 4px;
    height: 4px;
    background: #00d4ff;
    border-radius: 50%;
    opacity: 0.7;
    animation: float 20s infinite linear;
    z-index: -1;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0px);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    90% {
        opacity: 0.7;
    }
    100% {
        transform: translateY(-10vh) translateX(100px);
        opacity: 0;
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(45deg, #00d4ff, #ff00aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #00d4ff;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #00d4ff;
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    padding: 0 50px;
    max-width: 1400px;
    margin: 0 auto;
}

.robot-container {
    flex: 1;
    height: 600px;
    max-width: 600px;
    position: relative;
}

#robotCanvas {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.hero-content {
    flex: 1;
    text-align: center;
    padding-left: 50px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #00d4ff, #ff00aa, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientText 3s ease infinite;
    text-shadow: 0 0 50px rgba(0, 212, 255, 0.3);
}

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

.tagline {
    font-size: clamp(1.2rem, 3vw, 2rem);
    margin-bottom: 30px;
    opacity: 0.9;
    letter-spacing: 2px;
}

.event-details {
    font-size: clamp(1rem, 2vw, 1.3rem);
    margin-bottom: 40px;
    padding: 20px 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-button {
    padding: 18px 40px;
    font-size: 1.2rem;
    font-weight: bold;
    background: linear-gradient(45deg, #00d4ff, #ff00aa);
    border: none;
    border-radius: 50px;
    color: white;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.4);
}

/* About Section */
.about {
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.about h2 {
    font-size: 3rem;
    margin-bottom: 40px;
    background: linear-gradient(45deg, #00d4ff, #ff00aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.about-card {
    padding: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #ff00aa, #00ff88);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #00d4ff;
}

.about-card p {
    line-height: 1.6;
    opacity: 0.9;
}
/* Event Schedule Section */
.event-schedule {
  max-width: 800px;
  margin: 100px auto 0 auto;
  background: rgba(20, 24, 44, 0.95);
  border-radius: 18px;
  box-shadow: 0 8px 32px rgba(0,212,255,0.08);
  padding: 40px 30px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.event-schedule h2 {
  font-size: 2.5rem;
  margin-bottom: 30px;
  background: linear-gradient(45deg, #00d4ff, #ff00aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.schedule-item {
  background: rgba(0, 212, 255, 0.07);
  border-left: 5px solid #00d4ff;
  border-radius: 10px;
  padding: 20px 25px;
  text-align: left;
  transition: transform 0.2s;
}

.schedule-item:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 4px 24px rgba(0,212,255,0.10);
}

.schedule-time {
  font-size: 1.1rem;
  color: #00d4ff;
  font-weight: bold;
  margin-bottom: 8px;
}

.schedule-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.schedule-desc {
  font-size: 1rem;
  color: #b6eaff;
}

/* Responsive */
@media (max-width: 600px) {
  .event-schedule {
    padding: 25px 8px;
  }
  .schedule-item {
    padding: 16px 10px;
  }
}


/* FAQ Section */
.faq {
    padding: 100px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.faq h2 {
    font-size: 3rem;
    margin-bottom: 60px;
    text-align: center;
    background: linear-gradient(45deg, #00d4ff, #ff00aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.faq-item {
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-question {
    padding: 25px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1.1rem;
    border: none;
    background: none;
    color: white;
    width: 100%;
    text-align: left;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: rgba(0, 212, 255, 0.1);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
}

.faq-answer.active {
    max-height: 200px;
}

.faq-answer p {
    padding: 25px;
    line-height: 1.6;
    opacity: 0.9;
}

/* Footer */
.footer {
    padding: 50px 20px;
    text-align: center;
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    opacity: 0.7;
    font-size: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .timeline {
        flex-direction: column;
    }
    
    .hero {
        flex-direction: column;
        padding: 0 20px;
        text-align: center;
    }
    
    .hero-content {
        padding-left: 0;
        margin-top: 30px;
    }
    
    .robot-container {
        height: 400px;
        max-width: 100%;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Ripple animation */
@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}