/* Reset y variables */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --border-radius: 8px;
    --box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: white;
    border-radius: 12px;
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
}

.login-header {
    text-align: center;
    padding: 40px 30px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.login-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    stroke: white;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    font-size: 14px;
    opacity: 0.9;
}

.login-form {
    padding: 30px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--box-shadow);
}

.btn-block {
    width: 100%;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.alert svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.alert-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-error svg {
    stroke: #dc2626;
}

.alert-success {
    background-color: #f0fdf4;
    color: #065f46;
    border: 1px solid #bbf7d0;
}

.alert-success svg {
    stroke: #16a34a;
}

.alert-warning {
    background-color: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-warning svg {
    stroke: #f59e0b;
}

.login-footer {
    text-align: center;
    padding: 20px 30px;
    background-color: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

.login-footer p {
    font-size: 13px;
    color: var(--gray-600);
}

/* Dashboard Layout */
.dashboard-container {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 260px;
    background: white;
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.sidebar-header p {
    font-size: 13px;
    color: var(--gray-600);
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--gray-700);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: var(--gray-50);
    color: var(--primary-color);
}

.nav-item.active {
    background-color: #eff6ff;
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    stroke: currentColor;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--gray-200);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.user-details h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
}

.user-details p {
    font-size: 12px;
    color: var(--gray-600);
}

.btn-logout {
    width: 100%;
    padding: 8px 16px;
    background-color: var(--gray-100);
    color: var(--gray-700);
    border: none;
    border-radius: var(--border-radius);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-logout:hover {
    background-color: var(--gray-200);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-bar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
}

.content-area {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-icon.success {
    background-color: #d1fae5;
    color: var(--success-color);
}

.stat-icon.danger {
    background-color: #fee2e2;
    color: var(--danger-color);
}

.stat-icon.warning {
    background-color: #fef3c7;
    color: var(--warning-color);
}

.stat-icon.primary {
    background-color: #dbeafe;
    color: var(--primary-color);
}

.stat-details h4 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.stat-details p {
    font-size: 14px;
    color: var(--gray-600);
}

/* Filters */
.filters {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.filter-row:last-child {
    margin-bottom: 0;
}

.filter-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-secondary {
    background-color: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background-color: var(--gray-300);
}

/* Table */
.table-container {
    overflow-x: auto;
}

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

thead {
    background-color: var(--gray-50);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200);
}

td {
    padding: 12px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-200);
}

tr:hover {
    background-color: var(--gray-50);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 12px;
    white-space: nowrap;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-info {
    background-color: #dbeafe;
    color: #1e40af;
}

.actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    padding: 6px;
    background: none;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon:hover {
    background-color: var(--gray-100);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
    stroke: var(--gray-600);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 20px;
}

.pagination button {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.pagination button:hover:not(:disabled) {
    background-color: var(--gray-50);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--gray-200);
    }
    
    .content-area {
        padding: 20px;
    }
    
    .top-bar {
        padding: 16px 20px;
    }
    
    .filter-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        overflow-x: scroll;
    }
    
    table {
        min-width: 600px;
    }
}

/* Loading */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state svg {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    stroke: var(--gray-400);
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    color: var(--gray-600);
}