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

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    background: #FFF9E6;
    color: #1a2c3e;
    line-height: 1.5;
}

header {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('banner-ecsah.jpg');
    background-size: cover;
    background-position: center 30%;
    color: white;
    padding: 1.5rem 2rem;
    text-align: center;
}

/* Contenedor del logo + título */
.logo-titulo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Estilos del logo */
.logo-ecsah {
    height: 60px;
    width: auto;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
}

.logo-titulo h1 {
    font-size: 1.8rem;
    margin-bottom: 0.25rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.logo-titulo p {
    font-size: 1rem;
    opacity: 0.95;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.buscador {
    margin-top: 1rem;
}

#searchInput {
    width: 90%;
    max-width: 500px;
    padding: 0.8rem 1rem;
    border-radius: 40px;
    border: none;
    font-size: 1rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    background: white;
    padding: 0.8rem;
    border-bottom: 1px solid #FFE082;
}

.tab-btn {
    background: #FFF3E0;
    border: none;
    padding: 0.6rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.2s;
    color: #5D4037;
}

.tab-btn.active {
    background: #FFC107;
    color: #1a2c3e;
    box-shadow: 0 4px 10px rgba(255, 193, 7, 0.3);
}

.tab-content {
    display: none;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.tab-content.active {
    display: block;
}

.intro {
    background: #FFF8E1;
    padding: 1.2rem;
    border-radius: 20px;
    margin-bottom: 2rem;
    border-left: 6px solid #FFC107;
}

.intro h2 {
    margin-bottom: 0.5rem;
    color: #5D4037;
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.8rem;
}

.card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
}

.card-header {
    background: #FFC107;
    color: #1a2c3e;
    padding: 1rem 1.2rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.card-body {
    padding: 1.2rem;
}

.card-body p {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.card-body ul {
    margin-left: 1.2rem;
    margin-bottom: 1rem;
    list-style: none;
    padding-left: 0;
}

.card-body li {
    margin: 0.8rem 0;
}

.btn-enlace {
    display: inline-block;
    background: #FFF3E0;
    color: #5D4037;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 30px;
    font-weight: 500;
    margin-top: 0.2rem;
    transition: 0.2s;
    width: 100%;
    text-align: center;
    box-sizing: border-box;
}

.btn-enlace:hover {
    background: #FFC107;
    color: #1a2c3e;
}

footer {
    background: #5D4037;
    color: #FFE082;
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
    font-size: 0.9rem;
}

/* Responsive para móviles */
@media (max-width: 700px) {
    .logo-ecsah {
        height: 45px;
    }

    .logo-titulo h1 {
        font-size: 1.4rem;
    }

    .tabs {
        flex-direction: column;
        align-items: center;
    }

    .tab-btn {
        width: 80%;
    }

    .tab-content {
        padding: 1rem;
    }

    .grid-cards {
        grid-template-columns: 1fr;
    }
}
/* Pantalla de bloqueo para docentes */
.lock-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.lock-box {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    max-width: 400px;
    width: 100%;
}

.lock-box h2 {
    color: #5D4037;
    margin-bottom: 0.5rem;
}

.lock-box p {
    color: #666;
    margin-bottom: 1.5rem;
}

.lock-box input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 30px;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.lock-box button {
    background: #FFC107;
    color: #1a2c3e;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.lock-box button:hover {
    background: #FFB300;
}

.error-msg {
    color: red;
    margin-top: 1rem;
    font-size: 0.9rem;
}