:root {
    --primary-orange: #FF6B00;
    --secondary-orange: #FF8C38;
    --light-orange: #FFF0E6;
    --dark-gray: #2D2D2D;
    --medium-gray: #6B6B6B;
    --light-gray: #F5F5F5;
    --white: #FFFFFF;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --border-radius: 12px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--white);
    padding: 1rem 2rem;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-orange);
}

.logo i {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav-links a:hover {
    color: var(--primary-orange);
    background: var(--light-orange);
}

.btn-primary {
    background: var(--primary-orange);
    color: var(--white) !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: 6px !important;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: var(--secondary-orange) !important;
}

/* Contenedor Principal */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Grid de Documentos */
.documentos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.documento-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.documento-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 30px rgba(255, 107, 0, 0.15);
}

.documento-icon {
    font-size: 3rem;
    color: var(--primary-orange);
    margin-bottom: 1rem;
}

.documento-titulo {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.documento-descripcion {
    color: var(--medium-gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.documento-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--medium-gray);
    border-top: 1px solid var(--light-gray);
    padding-top: 1rem;
}

.documento-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.3rem 0.8rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-view {
    background: var(--primary-orange);
    color: var(--white);
}

.btn-view:hover {
    background: var(--secondary-orange);
}

.btn-edit {
    background: #4CAF50;
    color: var(--white);
}

.btn-edit:hover {
    background: #45a049;
}

.btn-delete {
    background: #f44336;
    color: var(--white);
}

.btn-delete:hover {
    background: #da190b;
}

/* Formularios */
.form-container {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--light-gray);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-orange);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* Dashboard */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-orange);
}

.stat-label {
    color: var(--medium-gray);
    margin-top: 0.5rem;
}

/* Tabla de Documentos */
.table-container {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: var(--primary-orange);
    color: var(--white);
    padding: 1rem;
    text-align: left;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--light-gray);
}

.table tr:hover {
    background: var(--light-orange);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        justify-content: center;
    }
    
    .documentos-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .table-container {
        overflow-x: auto;
    }
}

@media (max-width: 480px) {
    .nav-links {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-links a {
        width: 100%;
        text-align: center;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
}

/* Alertas */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.documento-card {
    animation: fadeIn 0.5s ease;
}

/* Barra de búsqueda */
.search-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-bar input {
    flex: 1;
    padding: 0.8rem;
    border: 2px solid var(--light-gray);
    border-radius: 6px;
    font-size: 1rem;
    min-width: 200px;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-orange);
}