/* --- Global Styles --- */
:root {
    --bg-color: #0d0d0f; /* Dark, non-pure black */
    --text-primary: #f5f5f7;
    --text-secondary: #a0a0a0;
    --accent-blue: #00e5ff; /* Electric Cyan */
    --accent-purple: #bb86fc; /* Glowing Purple */
    --deep-purple: #6200ea;
    --glass: rgba(255, 255, 255, 0.05);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Poppins', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
    position: relative;
    scroll-behavior: smooth;
}

#three-bg {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1; /* Keep behind content */
}

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

/* --- Layout Elements --- */
header {
    background-color: rgba(13, 13, 15, 0.85);
    backdrop-filter: blur(10px);
    position: sticky; top: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex; justify-content: space-between; align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.2rem;
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

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

nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1.1rem;
    position: relative;
    transition: 0.3s ease;
}

nav a:hover, nav a.active {
    color: var(--text-primary);
}

nav a.active::after {
    content: '';
    position: absolute; bottom: -8px; left: 0;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    box-shadow: 0 0 8px var(--accent-blue);
}

/* --- Hero Section --- */
.hero {
    height: 90vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
}

.glow-text {
    color: var(--text-primary);
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.6));
}

.btn {
    display: inline-block;
    text-decoration: none;
    padding: 15px 40px;
    border-radius: 30px;
    font-weight: 700;
    font-family: var(--font-heading);
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: 0.4s ease;
}

.pulse-btn {
    background: linear-gradient(135deg, var(--deep-purple), var(--accent-purple));
    color: white;
    box-shadow: 0 0 15px rgba(187, 134, 252, 0.4);
}

.pulse-btn:hover {
    box-shadow: 0 0 25px rgba(187, 134, 252, 0.8);
    transform: scale(1.05);
}

/* --- Events Section --- */
#events {
    padding: 80px 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 50px;
    text-align: center;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute; bottom: -10px; left: 0;
    width: 60px; height: 3px;
    background-color: var(--accent-blue);
    box-shadow: 0 0 10px var(--accent-blue);
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

/* --- Event Card --- */
.event-card {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    padding: 30px;
    position: relative;
    opacity: 0; /* Hidden initially for animation */
    transform: translateY(20px);
}

.event-card.loaded {
    opacity: 1;
    transform: translateY(0);
}

.event-card:hover {
    transform: scale(1.03) translateY(-5px);
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(0, 229, 255, 0.1);
}

.event-icon {
    font-size: 3rem; margin-bottom: 20px;
    color: var(--accent-blue);
}

.event-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.event-details {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 25px;
    min-height: 80px;
}

.register-btn {
    width: 100%;
    text-align: center;
    background-color: transparent;
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
}

.register-btn:hover {
    background-color: var(--accent-blue);
    color: #111;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.6);
}

/* --- Loading State --- */
.loading-state {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.5rem;
}

/* --- Admin Styles & Glassmorphism Login --- */
.admin-body {
    display: flex; justify-content: center; align-items: center;
    min-height: 100vh;
}

.admin-auth-container {
    width: 90%; max-width: 450px;
}

.glassmorphism {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 25px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 50px 40px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    text-align: center;
}

.auth-card h1 {
    font-size: 2rem; margin-bottom: 15px;
}

.auth-card p {
    color: var(--text-secondary); margin-bottom: 40px;
    font-size: 0.95rem;
}

.input-group {
    text-align: left; margin-bottom: 25px;
}

.input-group label {
    display: block; color: var(--text-secondary);
    margin-bottom: 8px; font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: 15px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background-color: rgba(255, 255, 255, 0.08);
}

.auth-btn {
    width: 100%;
    background: var(--deep-purple);
    color: white; margin-top: 10px;
}

.error-message {
    color: #ff4444; font-size: 0.9rem; margin-top: 15px;
}