audio {
    margin: 15px 0;
}

iframe {
    border-radius: 10px;
    margin-bottom: 10px;
}

.details {
    display: none;
    margin-top: 15px;
    animation: fadeIn 0.3s ease;
}

.details.show {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden {
    display: none;
    margin-top: 10px;
}

.show {
    display: block;
}

.card.active {
    background: #2563eb;
    color: white;
}

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

body {
    font-family: 'Segoe UI', sans-serif;
    background: #eef2f7;
    color: #1e293b;
}

/* NAVBAR */
nav {
    background: #0f1e3d;
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 15px;
}

nav a {
    color: #cbd5e1;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: white;
}

/* HERO */
.hero {
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 42px;
}

.hero p {
    margin-top: 10px;
    font-size: 18px;
    color: #cbd5e1;
}

/* CONTAINER */
.container {
    max-width: 1200px;
    margin: auto;
    padding: 40px 20px;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

/* CARD */
.card {
    background: white;
    padding: 25px;
    border-radius: 14px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transition: 0.3s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-6px);
}

/* CARD ICON */
.card h3 {
    margin-bottom: 10px;
}

/* BOTÕES */
.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 15px;
    background: #2563eb;
    color: white;
    border-radius: 8px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.btn:hover {
    background: #1e40af;
}

/* SEÇÃO ESCURA (igual sua referência) */
.section-dark {
    background: #1e2f5c;
    padding: 60px 20px;
    color: white;
}

/* CARDS ESCUROS */
.card-dark {
    background: #263a70;
    color: white;
    padding: 25px;
    border-radius: 14px;
    transition: 0.3s;
}

.card-dark:hover {
    transform: translateY(-6px);
}

/* CTA */
.cta {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    padding: 50px;
    border-radius: 12px;
    text-align: center;
    color: white;
}

/* FOOTER */
footer {
    background: #0f1e3d;
    color: #cbd5e1;
    text-align: center;
    padding: 25px;
    margin-top: 40px;
}

/* BOTÃO TOPO */
#topBtn {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: all 0.3s;
    z-index: 99;
}

#topBtn:hover {
    background: #1e40af;
    transform: scale(1.1);
}

/* AUDIO E IFRAME - ESTILOS PARA PODCAST */
audio {
    width: 100%;
    max-width: 400px;
    border-radius: 30px;
    background: #f1f5f9;
}

audio:hover {
    opacity: 0.9;
}

iframe {
    width: 100%;
    max-width: 560px;
    height: 315px;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

iframe:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

/* RESPONSIVIDADE PARA IFRAME */
@media (max-width: 768px) {
    iframe {
        height: 200px;
    }
    
    audio {
        max-width: 100%;
    }
}