/* === ESTILOS GENERALES === */

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

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white-color: #ffffff;
    --border-radius: 4px;
    --box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* === NAVBAR === */

.navbar {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    padding: 15px 20px;
    font-weight: bold;
    font-size: 20px;
}

.navbar-brand h2 {
    margin: 0;
    font-size: 22px;
}

.navbar-menu {
    display: flex;
    gap: 0;
}

.nav-link {
    color: var(--white-color);
    text-decoration: none;
    padding: 20px 20px;
    transition: background-color 0.3s;
    display: inline-block;
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--primary-color);
}

.nav-link.logout {
    background-color: var(--danger-color);
}

.nav-link.logout:hover {
    background-color: #c82333;
}

/* === CONTENEDOR === */

.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.row.full {
    grid-template-columns: 1fr;
}

.col-md-6 {
    grid-column: span 1;
}

@media (min-width: 768px) {
    .row {
        grid-template-columns: repeat(2, 1fr);
    }

    .col-md-6 {
        grid-column: span 1;
    }
}

@media (min-width: 1024px) {
    .row {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

.col-md-12 {
    grid-column: 1 / -1;
}

/* === TARJETAS === */

.card {
    background-color: var(--white-color);
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
}

.card-header {
    padding: 15px;
    background-color: var(--light-color);
    border-bottom: 1px solid #ddd;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.card-header h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

/* === FORMULARIOS === */

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 14px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.25);
}

select.form-control {
    cursor: pointer;
}

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

/* === BOTONES === */

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

.btn-primary:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--white-color);
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-success {
    background-color: var(--success-color);
    color: var(--white-color);
}

.btn-success:hover {
    background-color: #218838;
}

.btn-danger {
    background-color: var(--danger-color);
    color: var(--white-color);
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-warning {
    background-color: var(--warning-color);
    color: #333;
}

.btn-warning:hover {
    background-color: #e0a800;
}

.btn-info {
    background-color: var(--info-color);
    color: var(--white-color);
}

.btn-info:hover {
    background-color: #138496;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* === ALERTAS === */

.alert {
    padding: 12px 15px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-color: var(--success-color);
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: var(--danger-color);
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: var(--warning-color);
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: var(--info-color);
    color: #0c5460;
}

/* === BADGES === */

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background-color: var(--success-color);
    color: var(--white-color);
}

.badge-danger {
    background-color: var(--danger-color);
    color: var(--white-color);
}

.badge-warning {
    background-color: var(--warning-color);
    color: #333;
}

.badge-info {
    background-color: var(--info-color);
    color: var(--white-color);
}

/* === TABLAS === */

.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.table thead {
    background-color: var(--light-color);
}

.table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #ddd;
}

.table td {
    padding: 12px;
    border-bottom: 1px solid #ddd;
}

.table tbody tr:hover {
    background-color: #f5f5f5;
}

/* === PÁGINAS ESPECÍFICAS === */

/* LOGIN */

.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background-color: var(--white-color);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    padding: 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.login-header p {
    color: var(--secondary-color);
    font-size: 14px;
}

.login-form {
    margin-bottom: 20px;
}

.login-footer {
    background-color: var(--light-color);
    padding: 15px;
    border-radius: var(--border-radius);
    font-size: 12px;
}

.login-footer code {
    background-color: #e9ecef;
    padding: 2px 6px;
    border-radius: 2px;
    font-family: 'Courier New', monospace;
}

/* DASHBOARD */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #ddd;
}

.page-header h1 {
    margin: 0;
    font-size: 28px;
}

.dashboard-header {
    margin-bottom: 30px;
}

.dashboard-header h1 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.dashboard-header p {
    color: var(--secondary-color);
    font-size: 16px;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: var(--white-color);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
}

.stat-card h3 {
    margin: 0;
    font-size: 14px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    margin: 0;
}

.dashboard-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

/* BÚSQUEDA */

.search-section {
    background-color: var(--white-color);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
}

.search-section h1 {
    margin-bottom: 20px;
    font-size: 28px;
}

.search-form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-form input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 14px;
}

.search-form button {
    padding: 10px 20px;
}

.search-results-header {
    padding: 15px;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
}

.results-section {
    background-color: var(--white-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* PAGINACIÓN */

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

.pagination-info {
    padding: 10px 15px;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
}

/* PROGRESS BAR */

.progress {
    width: 100%;
    height: 20px;
    background-color: #e9ecef;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    width: 0%;
    transition: width 0.3s;
}

/* UPLOAD FORM */

.upload-form {
    padding: 20px;
}

.upload-form .form-group input[type="file"] {
    padding: 20px;
    border: 2px dashed #ddd;
    border-radius: var(--border-radius);
    cursor: pointer;
    text-align: center;
}

.upload-form .form-group input[type="file"]:hover {
    border-color: var(--primary-color);
}

/* PERFIL */

.profile-info {
    display: grid;
    gap: 15px;
}

.profile-info p {
    margin: 0;
    padding: 10px;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
}

.profile-info strong {
    color: var(--dark-color);
}

/* FOOTER */

footer {
    background-color: var(--dark-color);
    color: var(--white-color);
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

footer p {
    margin: 0;
}

/* UTILIDADES */

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.p-20 {
    padding: 20px;
}

code {
    background-color: #f4f4f4;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

/* RESPONSIVE */

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 10px;
    }

    .navbar-menu {
        width: 100%;
        flex-wrap: wrap;
    }

    .nav-link {
        flex: 1;
        padding: 15px 10px;
        text-align: center;
        font-size: 12px;
    }

    .search-form {
        flex-direction: column;
    }

    .page-header {
        flex-direction: column;
        gap: 10px;
    }

    .dashboard-stats {
        grid-template-columns: 1fr;
    }

    .row {
        grid-template-columns: 1fr;
    }

    .table {
        font-size: 12px;
    }

    .table th,
    .table td {
        padding: 8px;
    }

    .btn {
        padding: 8px 12px;
        font-size: 12px;
    }

    .login-box {
        padding: 20px;
    }
}