@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

* {
    font-family: 'Poppins', sans-serif;
}

iframe {
    margin: 0 auto;
}

.gradient-ocean {
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 25%, #0891b2 50%, #0c4a6e 75%, #082f49 100%);
}

.gradient-wave {
    background: linear-gradient(180deg, rgba(14, 165, 233, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.text-ocean { color: #0c4a6e; }
.bg-ocean-light { background-color: #e0f2fe; }
.bg-ocean-dark { background-color: #082f49; }

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.card-hover { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.wave-animation { animation: wave 3s ease-in-out infinite; }

@keyframes wave {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-10px); }
    50% { transform: translateY(-10px); }
}

.nav-dropdown:hover .nav-dropdown-menu { display: block; }

.hero-topics {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 0.625rem;
    margin-bottom: 1.25rem;
}

.hero-topic-btn {
    display: inline-block;
    box-sizing: border-box;
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 9999px;
    text-decoration: none;
    text-align: center;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.hero-topic-btn:hover {
    background: rgba(255, 255, 255, 0.28);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-1px);
}

@media (max-width: 767px) {
    .hero-topics {
        gap: 0.5rem;
    }

    .hero-topic-btn {
        width: calc((100% - 0.5rem) / 2);
    }

    .hero-topic-btn:nth-child(7) {
        width: 100%;
    }
}