/* Estilo General PWA */
:root {
    --primary-color: #ffcc00; /* Amarillo Pochongo */
    --background-color: #1a1a1a;
    --surface-color: #2b2b2b;
    --text-color: #ffffff;
    --danger-color: #d10000;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
}

/* Contenedor principal */
.app-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 15px;
}

/* Header */
.app-header {
    background-color: var(--surface-color);
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 20px;
    text-align: center;
}

.app-header h1 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.8em;
}

/* Navegación Principal (Hub) */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.nav-card {
    background-color: var(--surface-color);
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    padding: 25px 15px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.nav-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255, 204, 0, 0.2);
}

.nav-card a {
    text-decoration: none;
    color: var(--primary-color);
    font-size: 1.2em;
    font-weight: 600;
}

/* Formularios y Tablas */
.form-container {
    background-color: var(--surface-color);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.form-container h2 {
    color: var(--primary-color);
    margin-top: 0;
}

input, textarea, select {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 8px;
    border: 1px solid #555;
    background-color: #333;
    color: var(--text-color);
    box-sizing: border-box;
}

button {
    background-color: var(--primary-color);
    color: #000;
    padding: 12px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1em;
    width: 100%;
}

.delete-btn {
    background-color: var(--danger-color);
    color: var(--text-color);
    padding: 8px 12px;
    font-size: 0.9em;
    width: auto;
}

/* Listas y Grids de Items */
.item-list {
    list-style: none;
    padding: 0;
}

.item-list li {
    background-color: #333;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
}

.item-card {
    background-color: var(--surface-color);
    padding: 10px;
    border-radius: 8px;
    text-align: center;
}

.item-card img, .item-card video {
    max-width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 4px;
    background-color: #000;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}