@font-face {
    font-family: 'Coolvetica';
    src: url('coolvetica.otf') format('opentype');
}

/* ===== FONDO GENERAL ===== */
body{
    font-family: 'coolvetica' ;
    font-weight: normal;
     letter-spacing: 0.7px; 
    background-image: url("fondo_scishark.webp");
    background-size: cover; 
    background-position: center; 
    background-repeat: no-repeat;
    background-attachment: fixed; 
    color:#1a1a1a;
}

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

/* Logo */
.logo {
    width: 80px;
    border-radius: 50%;
    border: 3px solid #00c3ff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: rotate(-5deg) scale(1.1);
}

.logo-text {
    font-weight: bold;
    font-size: 28px;
    margin-left: 12px;
    color: #004080;
    letter-spacing: 1px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

/* Lista de enlaces */
.links {
    list-style: none;
    margin: 20px 0;
    padding: 0;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.links li a {
    text-decoration: none;
    background: linear-gradient(135deg, #0066cc, #00c3ff);
    color: white;
    padding: 12px 20px;
    border-radius: 10px;
    font-weight: bold;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.links li a:hover {
    background: linear-gradient(135deg, #004080, #0099cc);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 14px rgba(0,0,0,0.4);
}

/* Texto descriptivo */
p {
    margin: 15px auto;
    max-width: 800px;
    font-size: 18px;
    text-align: center;
}

/* Sección Energía */
.energia-section {
    padding: 40px;
    text-align: center;
    background: rgba(15, 23, 42, 0.9);
    color: white;
    border-radius: 15px;
    margin: 40px auto;
    max-width: 1200px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.energia-section h2 {
    margin-bottom: 20px;
    font-size: 32px;
    color: #00c3ff;
    text-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

/* PDF principal */
.pdf-principal {
    margin-bottom: 30px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0px 0px 20px rgba(0,0,0,0.5);
}

/* Contenedor de links */
.pdf-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Tarjetas */
.card {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    padding: 20px 30px;
    border-radius: 15px;
    text-decoration: none;
    color: white;
    font-weight: bold;
    transition: 0.3s;
    box-shadow: 0px 10px 20px rgba(0,0,0,0.3);
}

.card:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0px 15px 30px rgba(0,0,0,0.5);
    background: linear-gradient(135deg, #1e293b, #334155);
}