/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --dark: #1e293b;
    --light: #f8fafc;
    --border: #e2e8f0;
    --sidebar-width: 260px;
    --topbar-height: 64px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.6;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: white;
    border-right: 1px solid var(--border);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header i {
    font-size: 24px;
    color: var(--primary);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
}

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

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

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

.nav-item.active {
    background: #eef2ff;
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

.nav-item i {
    width: 20px;
    text-align: center;
}

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

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background: white;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--dark);
}

.topbar-search {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.topbar-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary);
}

.topbar-search input {
    width: 100%;
    padding: 10px 12px 10px 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: white;
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
}

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

.btn-icon .badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

.user-menu:hover {
    background: var(--light);
}

.user-menu img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

/* Content Area */
.content-area {
    padding: 24px;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
}

.section-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    gap: 16px;
    align-items: center;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-icon.blue { background: var(--info); }
.stat-icon.green { background: var(--success); }
.stat-icon.orange { background: var(--warning); }
.stat-icon.red { background: var(--danger); }

.stat-content h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

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

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

/* Card */
.card {
    background: white;
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
}

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

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--light);
    border-radius: 8px;
}

.activity-item i {
    color: var(--primary);
}

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

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

.data-table th {
    text-align: left;
    padding: 12px;
    background: var(--light);
    font-weight: 600;
    font-size: 14px;
    color: var(--secondary);
    border-bottom: 2px solid var(--border);
}

.data-table td {
    padding: 16px 12px;
    border-bottom: 1px solid var(--border);
}

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

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

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

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

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

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

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

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

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

/* Filters */
.filters {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filters .form-control {
    width: auto;
    min-width: 150px;
}

/* Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

/* Health Status */
.health-status {
    padding: 20px;
    background: var(--light);
    border-radius: 8px;
    margin-bottom: 16px;
    text-align: center;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--secondary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: white;
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    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-info {
    border-left: 4px solid var(--info);
}

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

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
}

/* 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,
    .settings-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        gap: 16px;
    }

    .topbar-search {
        display: none;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 8px;
}

.action-btn {
    padding: 6px 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.action-btn-edit {
    background: #dbeafe;
    color: var(--info);
}

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

.action-btn-delete {
    background: #fee2e2;
    color: var(--danger);
}

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

.action-btn-view {
    background: #d1fae5;
    color: var(--success);
}

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

/* Enhanced Form Styles */
.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 0;
}

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

.required {
    color: var(--danger);
}

.form-group small {
    display: block;
    margin-top: 4px;
    color: var(--secondary);
    font-size: 12px;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    padding: 16px;
    background: var(--light);
    border-radius: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.checkbox-label:hover {
    background: #f0f0f0;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label i {
    color: var(--primary);
}

/* Modal Enhancements */
.modal-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin: 20px 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border);
    color: var(--dark);
}

.modal-content h4:first-of-type {
    margin-top: 0;
}

/* Code/JSON Input */
textarea.form-control[placeholder*="JSON"],
textarea.form-control[id*="Data"],
textarea.form-control[id*="Metadata"] {
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

/* Platform Icons */
.platform-icon {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--light);
    border-radius: 4px;
    font-size: 12px;
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.status-indicator::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

/* Form Validation */
.form-control:invalid {
    border-color: var(--danger);
}

.form-control:valid {
    border-color: var(--success);
}

.form-control:focus:invalid {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-control:focus:valid {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Help Text */
.help-text {
    display: block;
    margin-top: 8px;
    padding: 8px 12px;
    background: #eff6ff;
    border-left: 3px solid var(--info);
    border-radius: 4px;
    font-size: 13px;
    color: #1e40af;
}

/* Field Groups */
.field-group {
    padding: 16px;
    background: var(--light);
    border-radius: 8px;
    margin-bottom: 20px;
}

.field-group-title {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
}

/* Responsive Form Adjustments */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        max-width: 95% !important;
    }
}