:root {
    --ocean-deep: #0a1d37;
    --wave-blue: #1e3a5f;
    --aqua-glow: #00d4ff;
    --neon-cyan: #00ffff;
    --coral-accent: #ff6b6b;
    --white-smoke: #f8f9fa;
    --light-wave: #e0f7fa;
    --gradient-primary: linear-gradient(135deg, var(--ocean-deep) 0%, #112240 100%);
    --gradient-secondary: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(255, 107, 107, 0.1));
}

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

body {
    font-family: 'Manrope', sans-serif;
    background: var(--gradient-primary);
    color: var(--white-smoke);
    overflow-x: hidden;
    position: relative;
    padding-top: 0 !important; /* REMOVE ALL TOP PADDING */
}


.navbar {
    background: rgba(10, 29, 55, 0.95) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    padding: 0.8rem 1rem !important;
    transition: all 0.4s ease;
    min-height: 70px;
    position: relative;
    top: 0;
    z-index: 1030;

    position: sticky !important;
    top: 0 !important;
    z-index: 1030 !important;
    width: 100%;
    margin: 0 !important;
    padding: 0.6rem 1rem !important;
}

.navbar.scrolled {
    padding: 0.5rem 1rem !important;
    min-height: 60px;
}


.navbar-brand {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--aqua-glow) !important;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
    white-space: nowrap;
    margin: 0;
    padding: 0;
}
 .virtual-badge {
            background: var(--coral-accent);
            color: white;
            font-size: 0.7rem;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            font-weight: 600;
        }


.speaker-designation {
    font-size: 0.9rem;
    font-style: italic;
    color: var(--light-wave);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}
@media (max-width: 991.98px) {
    .navbar-brand {
        display: none !important; 
    }

    .navbar {
        padding: 0.6rem 1rem !important;
    }

    
    .navbar-toggler {
        position: absolute;
        left: 12px;
        top: 50%;
        transform: translateY(-50%);
        margin: 0 !important;
        padding: 0.4rem 0.6rem !important;
        border: none !important;
        z-index: 1001;
    }

    .navbar-toggler-icon {
        width: 1.4em !important;
        height: 1.4em !important;
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300d4ff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
        background-size: contain;
        background-repeat: no-repeat;
        filter: none !important;
    }

    .navbar-toggler:hover .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300ffff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
    }

    .navbar .container,
    .navbar .container-fluid {
        padding-left: 60px !important;
        padding-right: 60px !important;
        position: relative;
    }


    
    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 29, 55, 0.98);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(0, 212, 255, 0.2);
        padding: 1rem 0;
        z-index: 999;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1.5rem !important;
        text-align: center;
    }
}


.nav-link {
    color: var(--light-wave) !important;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--neon-cyan) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    background: var(--neon-cyan);
    transition: all 0.4s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}


.btn-register {
    background: linear-gradient(45deg, var(--coral-accent), #ff8c8c);
    border: none;
    border-radius: 50px;
    padding: 0.6rem 1.8rem;
    font-weight: 600;
    color: white;
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.4);
    transition: all 0.4s ease;
}

.btn-register:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 0 30px rgba(255, 107, 107, 0.6);
}


.hero-section {
    height: 100vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-top: 0 !important;
    padding-top: 0 !important;

    /* 1. Gradient as base background */
    background: var(--gradient-primary);

    /* 2. PNG image centered */
    background-image: url('logo.png');
    background-size: contain;        /* or 'auto', 'cover' as needed */
    background-position: center;
    background-repeat: no-repeat;

    /* 3. Darker overlay for text clarity */
    background-image: 
        linear-gradient(135deg, rgba(10, 29, 55, 0.72), rgba(30, 58, 95, 0.72)),
        url('logo.png');
    background-size: cover, contain;
    background-position: center, center;
    background-repeat: repeat, no-repeat;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(10, 29, 55, 0.92), rgba(30, 58, 95, 0.85));
    backdrop-filter: blur(2px);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    padding: 2rem;
    text-align: center;
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.6);
    margin-bottom: 1rem;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 20px rgba(0, 212, 255, 0.4); }
    to { text-shadow: 0 0 40px rgba(0, 212, 255, 0.8), 0 0 60px rgba(0, 255, 255, 0.5); }
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--light-wave);
    margin-bottom: 1.5rem;
}

.connect-badge {
    display: inline-block;
    background: var(--aqua-glow);
    color: var(--ocean-deep);
    font-weight: 700;
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    font-size: 1.4rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Countdown */
.countdown-container {
    margin: 2rem 0;
}

.countdown-item {
    display: inline-block;
    margin: 0 1rem;
    text-align: center;
}

.countdown-value {
    display: block;
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.countdown-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--light-wave);
}

/* Mobile: Hide seconds + tighter spacing */
@media (max-width: 576px) {
    .countdown-item:last-child { display: none; }
    .countdown-item { margin: 0 0.6rem; }
    .countdown-value { font-size: 1.8rem; }
    .countdown-label { font-size: 0.7rem; }

.hero-section {
        padding-top: 0 !important;
        margin-top: 0 !important;
    }

    .hero-content {
        margin-top: 5px !important;   /* Minimal gap */
        padding-top: 0 !important;
        padding-bottom: 1rem;
    }

    .hero-title {
        margin-top: 0 !important;
        margin-bottom: 0.6rem !important;
        line-height: 1.1;
         font-size: 2.5rem;
    }


    /* Ensure no hidden overflow */
    .hero-section, .hero-content {
        overflow: visible !important;
    }

.hero-subtitle {
        font-size: 1.2rem;
    }

    .connect-badge {
        font-size: .75rem;
        padding: 0.5rem 1.5rem;
    }
}


.speaker-card {
    text-align: center;
    margin-bottom: 1.5rem;
}

.speaker-image-wrapper {
    width: 180px;
    height: 180px;
    margin: 0 auto 1rem;
    overflow: hidden;
    border-radius: 50%;
    border: 3px solid var(--aqua-glow);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.speaker-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.4s ease;
}

.speaker-card:hover .speaker-img {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .speaker-image-wrapper {
        width: 140px;
        height: 140px;
    }
}


.section-title {
    font-family: 'Orbitron', sans-serif;
    color: var(--aqua-glow);
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    margin-bottom: 3rem;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--neon-cyan), transparent);
    bottom: -15px;
    left: 0;
    border-radius: 2px;
}

.about-section, .agenda-section, .contact-section {
    padding: 100px 0;
    background: rgba(30, 58, 95, 0.3);
}

.fees-section {
    padding: 80px 0;
    background: rgba(10, 29, 55, 0.6);
}

.venue-section {
    padding: 100px 0;
    
}

.fee-card, .contact-card, .timeline-content {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    backdrop-filter: blur(10px);
}

/* Footer */
.footer {
    background: var(--ocean-deep);
    color: #b0bec5;
    padding: 80px 0 30px;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer h5 {
    color: var(--aqua-glow);
    font-family: 'Orbitron', sans-serif;
}

.social-icons a {
    color: #b0bec5;
    font-size: 1.6rem;
    margin: 0 10px;
    transition: 0.3s;
}

.social-icons a:hover {
    color: var(--neon-cyan);
    transform: translateY(-3px);
}

/* Remove Back-to-Top */
.back-to-top { display: none !important; }

/* Wave Background */
.wave-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    z-index: -1;
}

.wave {
    position: absolute;
    bottom: 0;
    width: 200%;
    height: 200px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M0,0 C300,80 900,80 1200,0 L1200,120 L0,120 Z" fill="%231e3a5f"></path></svg>') repeat-x;
    animation: wave 12s linear infinite;
}

.wave:nth-child(2) {
    animation: wave 18s linear infinite reverse;
    opacity: 0.6;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M0,0 C300,100 900,60 1200,0 L1200,120 L0,120 Z" fill="%2300d4ff"></path></svg>') repeat-x;
    height: 180px;
}

@keyframes wave {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Floating Particles */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: rgba(0, 212, 255, 0.5);
    border-radius: 50%;
    animation: float 15s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) translateX(100px); opacity: 0; }
}