html, body {
    margin: 0 !important;
    padding: 0 !important;
    width: 100%;
    overflow-x: hidden;
    background-color: var(--bg-body);
    font-family: 'Sarabun', sans-serif;
    color: white;
}

.hero-full-width {
    width: 100vw;
    height: 85vh;
    position: relative;
    margin: 0;
    padding: 0;
}

.hero-full-width img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(5, 22, 43, 0.3) 0%, rgba(5, 22, 43, 0.9) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.title-area {
    font-family: 'Silpakorn72', sans-serif;
    border: 1px solid white;
    border-radius: 20px;
    padding: 1.5rem 2rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    display: inline-block;
}

.registration-cta {
    background: rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 30px;
    border: 1px solid rgba(184, 134, 11, 0.3);
}

.btn-submit {
    background: var(--primary);
    color: white;
    border: 2px solid var(--gold);
    border-radius: 15px;
    font-weight: 700;
    transition: 0.3s;
    width: 100%;
    max-width: 400px;
}

.btn-submit:hover {
    background: var(--gold);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(184, 134, 11, 0.4);
}

.video-card {
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid rgba(184, 134, 11, 0.5);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.video-label {
    padding: 0.75rem;
    background: var(--gold);
    text-align: left;
}

.video-label h5 {
    font-size: 1.1rem;
    line-height: 1.4;
}
.text-gold { color: var(--gold); }

.gold-line {
    width: 80px;
    height: 3px;
    background: var(--gold);
    margin: 15px auto;
}

@media (max-width: 768px) {
    .hero-full-width { height: 70vh; }
    .registration-cta { padding: 1.5rem; }
    .btn-submit { font-size: 1.1rem !important; }
}