:root {
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.5);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary: #38bdf8;
    --secondary: #818cf8;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
}

/* Background Glowing Orbs */
.blur-circle {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
}
.circle-1 {
    width: 300px;
    height: 300px;
    background: #38bdf8;
    top: -50px;
    left: -50px;
    opacity: 0.3;
}
.circle-2 {
    width: 400px;
    height: 400px;
    background: #818cf8;
    bottom: -100px;
    right: -50px;
    opacity: 0.2;
}

/* Glassmorphism Card Base */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header & Nav */
header {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 85%;
    max-width: 1100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    z-index: 1000;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
}
.logo span { color: var(--primary); }

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.3s;
}

nav a:hover { color: var(--primary); }

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 6rem 1rem 2rem;
}

.hero-content {
    text-align: center;
    padding: 3rem 2rem;
    max-width: 750px;
    width: 100%;
}

/* Profile Photo Avatar */
.profile-avatar {
    width: 160px;
    height: 160px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.4);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.badge {
    background: rgba(56, 189, 248, 0.1);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.hero h1 {
    font-size: 2.5rem;
    margin: 1rem 0 0.8rem;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

/* Buttons */
.hero-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.8rem 1.6rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: 0.3s;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Section Common */
.section {
    max-width: 1100px;
    margin: 4rem auto;
    padding: 0 1.5rem;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2.5rem;
}

.about-text {
    padding: 2.5rem;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* Video Section */
.video-card {
    padding: 1.5rem;
    max-width: 850px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-title {
    margin-top: 1rem;
    font-size: 1.1rem;
    text-align: center;
    color: var(--text-main);
}

/* Grid Layouts */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    padding: 2rem;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.4);
}

.icon-box {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.card h3 {
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.tag {
    display: inline-block;
    background: rgba(129, 140, 248, 0.15);
    color: var(--secondary);
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    margin-bottom: 0.8rem;
}

/* Contact */
.contact-box {
    text-align: center;
    padding: 3rem 1.5rem;
}

.contact-details {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
}

.hidden { display: none; }

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--card-border);
}

@media (max-width: 768px) {
    header {
        position: relative;
        top: 0;
        left: 0;
        transform: none;
        width: 100%;
        border-radius: 0;
        flex-direction: column;
        gap: 0.8rem;
    }
    .hero { padding-top: 2rem; }
    .hero h1 { font-size: 2rem; }
    .hero-btns { flex-direction: column; }
}