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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1e293b;
    --darker: #0f172a;
    --light: #f1f5f9;
    --lighter: #f8fafc;
    --border: #e2e8f0;
    --text: #334155;
    --text-light: #64748b;
    --sidebar-width: 260px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--lighter);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--darker);
    color: white;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.nav-item.active {
    background: rgba(99, 102, 241, 0.1);
    color: white;
    border-left-color: var(--primary);
}

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

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: white;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text);
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
}

.header-actions {
    margin-left: auto;
}

.content {
    flex: 1;
    padding: 2rem;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

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

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.stat-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 500;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
}

.stat-detail {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1rem;
}

.chart-container {
    min-height: 200px;
}

.chart-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.chart-bar:last-child {
    border-bottom: none;
}

.chart-label {
    flex: 0 0 120px;
    font-size: 0.875rem;
    color: var(--text);
    font-weight: 500;
}

.chart-bar-fill {
    flex: 1;
    height: 8px;
    background: var(--light);
    border-radius: 4px;
    overflow: hidden;
}

.chart-bar-value {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    transition: width 0.5s ease;
}

.chart-count {
    flex: 0 0 40px;
    text-align: right;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
}

.recent-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.recent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--lighter);
    border-radius: 8px;
    font-size: 0.875rem;
}

.recent-item-name {
    font-weight: 500;
    color: var(--dark);
}

.recent-item-detail {
    color: var(--text-light);
}

/* Table */
.table-container {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.table-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 250px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--lighter);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.search-box svg {
    width: 18px;
    height: 18px;
    color: var(--text-light);
}

.search-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 0.875rem;
    color: var(--text);
    outline: none;
}

.filters {
    display: flex;
    gap: 1rem;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: white;
    font-size: 0.875rem;
    color: var(--text);
    cursor: pointer;
    outline: none;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table thead {
    background: var(--lighter);
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--dark);
    border-bottom: 2px solid var(--border);
}

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

.data-table tbody tr:hover {
    background: var(--lighter);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-info {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

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

.btn-icon {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s;
}

.btn-icon:hover {
    background: var(--lighter);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
    color: var(--text-light);
}

.btn-icon.edit:hover svg {
    color: var(--primary);
}

.btn-icon.delete:hover svg {
    color: var(--danger);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.pagination button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text);
    transition: all 0.2s;
}

.pagination button:hover:not(:disabled) {
    background: var(--lighter);
    border-color: var(--primary);
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-danger:hover {
    background: #dc2626;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1rem;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: white;
    border-radius: 12px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

.modal-close {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s;
}

.modal-close:hover {
    background: var(--lighter);
}

.modal-close svg {
    width: 20px;
    height: 20px;
    color: var(--text-light);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary);
}

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

/* Toast */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--danger);
}

.toast-warning {
    border-left: 4px solid var(--warning);
}

.toast-info {
    border-left: 4px solid var(--primary);
}

.toast-message {
    flex: 1;
    font-size: 0.875rem;
    color: var(--text);
}

/* Confirm Dialog */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2500;
}

.confirm-overlay.active {
    display: flex;
}

.confirm-dialog {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    max-width: 400px;
    text-align: center;
}

.confirm-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.confirm-icon svg {
    width: 32px;
    height: 32px;
    color: var(--danger);
}

.confirm-dialog h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.confirm-dialog p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.confirm-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Upload Section */
.upload-container {
    max-width: 800px;
}

.upload-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.upload-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.upload-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.search-sin-imagen {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin: 1rem 0;
    font-size: 0.875rem;
}

.search-sin-imagen:focus {
    outline: none;
    border-color: var(--primary);
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.upload-area:hover {
    border-color: var(--primary);
    background: var(--lighter);
}

.upload-area svg {
    width: 48px;
    height: 48px;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.upload-area p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.upload-progress {
    margin-top: 1rem;
}

.progress-bar {
    height: 8px;
    background: var(--light);
    border-radius: 4px;
    overflow: hidden;
}

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

.upload-results {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.upload-result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--lighter);
    border-radius: 8px;
    font-size: 0.875rem;
}

.upload-result-success {
    border-left: 3px solid var(--success);
}

.upload-result-error {
    border-left: 3px solid var(--danger);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

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

    .table-header {
        flex-direction: column;
    }

    .filters {
        width: 100%;
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }
}