/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    background: #fff;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    background: #2c3e50;
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand h1 {
    font-size: 1.5rem;
    margin: 0;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.navbar-menu a {
    color: #ecf0f1;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.3s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background: #34495e;
}

.navbar-user {
    color: #ecf0f1;
    padding: 0.5rem 1rem;
    background: #34495e;
    border-radius: 4px;
}

.btn-logout {
    background: #e74c3c !important;
    color: #fff !important;
}

.btn-logout:hover {
    background: #c0392b !important;
}

/* Content */
.content {
    padding: 2rem;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h2 {
    color: #2c3e50;
    font-size: 2rem;
}

/* Cards */
.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    margin: 0;
    color: #2c3e50;
}

.card-body {
    padding: 1.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 2rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.stat-icon {
    font-size: 3rem;
}

.stat-info {
    flex: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background: #3498db;
    color: #fff;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: #95a5a6;
    color: #fff;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #7f8c8d;
    font-size: 0.875rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal !important;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

/* Search Form */
.search-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.search-form input[type="text"] {
    flex: 1;
    min-width: 250px;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.search-form select {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table thead {
    background: #f8f9fa;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ecf0f1;
}

.table th {
    font-weight: 600;
    color: #2c3e50;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

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

.table-info {
    margin-top: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 4px;
    text-align: center;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-success {
    background: #2ecc71;
    color: #fff;
}

.badge-danger {
    background: #e74c3c;
    color: #fff;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

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

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

/* Login Container */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-box {
    background: #fff;
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    max-width: 450px;
    width: 100%;
}

.login-box h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.login-box h2 {
    text-align: center;
    color: #7f8c8d;
    font-size: 1.2rem;
    font-weight: normal;
    margin-bottom: 2rem;
}

.login-info {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 4px;
    text-align: center;
}

.login-info p {
    margin: 0;
    color: #7f8c8d;
}

/* Utilities */
.text-center {
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content {
        padding: 1rem;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
}