:root {
    /* El verde oficial que me pediste */
    --hospital-green: #029834;
    /* Un verde clarito para fondos de botones, basado en el verde oficial */
    --hospital-light: #e9f7ef;
    /* Un verde más oscuro para el borde del encabezado */
    --hospital-dark: #017a29;
    --dark: #2c3e50;
    --white: #ffffff;
}

body {
    font-family: 'Open Sans', sans-serif;
    margin: 0; 
    background-color: #f8f9fa; 
    color: var(--dark);
    line-height: 1.6;
}

.container { 
    max-width: 1000px; 
    margin: 0 auto; 
    padding: 0 15px; 
}

header {
    background: var(--hospital-green); 
    color: white; 
    padding: 15px 0;
    border-bottom: 4px solid var(--hospital-dark);
}

.header-flex { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}

.logo-area strong { 
    display: block; 
    font-size: 1.2rem; 
}

.hero { 
    text-align: center; 
    padding: 40px 0; 
}

.hero h1 { 
    font-size: 2rem; 
    color: var(--hospital-green); 
    margin-bottom: 10px; 
}

.search-box input {
    width: 100%; 
    max-width: 600px; 
    padding: 18px;
    border: 2px solid var(--hospital-green); 
    border-radius: 30px;
    font-size: 1.1rem; 
    outline: none;
}

.filter-grid {
    display: flex; 
    flex-wrap: wrap; 
    gap: 10px; 
    justify-content: center; 
    margin-bottom: 30px;
}

.filter-btn {
    padding: 12px 20px; 
    border: 1px solid #ddd; 
    background: white;
    border-radius: 8px; 
    cursor: pointer; 
    font-weight: bold; 
    font-size: 0.9rem;
}

.filter-btn.active { 
    background: var(--hospital-green); 
    color: white; 
    border-color: var(--hospital-green); 
}

.video-grid {
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); 
    gap: 20px;
}

.card {
    background: white; 
    border-radius: 15px; 
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05); 
    border: 1px solid #eee;
}

.video-box { 
    position: relative; 
    padding-bottom: 56.25%; 
    height: 0; 
    background: #000; 
}

.video-box iframe { 
    position: absolute; 
    top:0; 
    left:0; 
    width:100%; 
    height:100%; 
    border:0; 
}

.card-content { 
    padding: 15px; 
}

.card-content h3 { 
    margin: 0 0 10px; 
    font-size: 1.1rem; 
    color: var(--hospital-green); 
}

.btn-info {
    display: block; 
    width: 100%; 
    padding: 12px; 
    background: var(--hospital-light);
    color: var(--hospital-green); 
    text-align: center; 
    border: none;
    border-radius: 8px; 
    font-weight: bold; 
    cursor: pointer; 
    font-size: 1rem;
}

/* Modal */
.modal { 
    display: none; 
    position: fixed; 
    z-index: 100; 
    left: 0; 
    top: 0; 
    width: 100%; 
    height: 100%; 
    background: rgba(0,0,0,0.8); 
}

.modal-content { 
    background: white; 
    margin: 5% auto; 
    padding: 25px; 
    width: 90%; 
    max-width: 500px; 
    border-radius: 15px; 
}

.close { 
    float: right; 
    font-size: 30px; 
    cursor: pointer; 
}

.modal-meta { 
    font-size: 0.85rem; 
    color: #666; 
    margin-bottom: 10px; 
    font-style: italic; 
}

footer { 
    background: var(--dark); 
    color: white; 
    text-align: center; 
    padding: 30px 0; 
    margin-top: 50px; 
}