:root {
    --sidebar-width: 260px;
    --header-height: 70px;
    /* Cloudflare Brand Colors */
    --cf-orange: #F6821F;
    --cf-orange-dark: #E66A0A;
    --cf-orange-light: #FF9933;
    --cf-blue: #0051C3;
    --cf-dark: #1D1D1D;
    --cf-darker: #0A0A0A;
    
    /* Functional Colors */
    --primary-color: #F6821F;
    --primary-dark: #E66A0A;
    --primary-light: #FF9933;
    --success-color: #2ECC71;
    --danger-color: #E74C3C;
    --warning-color: #F39C12;
    --info-color: #0051C3;
    
    /* Background Colors */
    --dark-bg: #1D1D1D;
    --darker-bg: #0A0A0A;
    --light-bg: #F5F5F5;
    --card-bg: #ffffff;
    
    /* Text & Borders */
    --border-color: #E0E0E0;
    --text-primary: #1D1D1D;
    --text-secondary: #666666;
    --text-light: #999999;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--light-bg);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    color: white;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    border-right: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header {
    padding: 25px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.2);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.sidebar-logo i {
    font-size: 28px;
    color: var(--cf-orange);
}

.sidebar-badge {
    background: linear-gradient(135deg, var(--cf-orange) 0%, var(--cf-orange-dark) 100%);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.nav-section {
    margin-bottom: 25px;
}

.nav-section-title {
    padding: 0 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 10px;
}

.nav-item {
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border-left: 3px solid transparent;
}

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

.nav-item.active {
    background: rgba(52, 152, 219, 0.15);
    color: white;
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

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

.top-header {
    background: white;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.header-bottom-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.header-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.header-title i {
    color: var(--cf-orange);
    font-size: 24px;
}

.mobile-menu-toggle {
    display: none;
    background: var(--light-bg);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: auto;
}

.mobile-menu-toggle:hover {
    background: white;
    border-color: var(--cf-orange);
}

.mobile-menu-toggle i {
    font-size: 18px;
    color: var(--text-primary);
}

.api-input {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--light-bg);
    color: var(--text-primary);
    font-size: 14px;
    width: 200px;
    transition: all 0.3s ease;
}

.api-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

.content-card {
    background: white;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 30px;
    margin-bottom: 30px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-bg);
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title i {
    color: var(--primary-color);
}

.alert-box {
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: start;
    gap: 10px;
}

.alert-info {
    background: #e3f2fd;
    border-left: 4px solid var(--info-color);
    color: #1565c0;
}

.alert-warning {
    background: #fff3e0;
    border-left: 4px solid var(--warning-color);
    color: #e65100;
}

.alert-danger {
    background: #ffebee;
    border-left: 4px solid var(--danger-color);
    color: #c62828;
}

.alert-success {
    background: #e8f5e9;
    border-left: 4px solid var(--success-color);
    color: #2e7d32;
}

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

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s ease;
    font-family: inherit;
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #FFFBF5;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-select, select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666666' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-color: white;
    padding-right: 40px;
    cursor: pointer;
}

.form-select:hover, select.form-control:hover {
    border-color: #999;
}

.form-select:focus, select.form-control:focus {
    border-color: var(--primary-color);
    background-color: #FFFBF5;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    justify-content: center;
}

.btn:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

.btn:active {
    transform: translateY(0);
}

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

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

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

.btn-success:hover {
    background: #229954;
}

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

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

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

.btn-warning:hover {
    background: #d68910;
}

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

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

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

.btn-block {
    width: 100%;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin-top: 20px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

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

.data-table th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

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

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

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

/* Loading Spinner */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

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

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--light-bg);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Utilities */
.d-none { display: none !important; }
.d-flex { display: flex !important; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-2 { gap: 12px; }
.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 20px; }
.mt-3 { margin-top: 20px; }
.fw-bold { font-weight: 700; }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }

/* Tab Panes */
.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Grid Layout */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 240px;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .header-title {
        font-size: 16px;
    }
    
    .header-title i {
        font-size: 18px;
    }
    
    .btn-text {
        display: none;
    }
    
    .btn-sm {
        padding: 8px 12px;
    }
    
    .api-status span {
        display: none;
    }
    
    .content-area {
        padding: 15px 10px;
    }
    
    .content-card {
        padding: 20px 15px;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .data-table {
        font-size: 13px;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 12px;
    }
    
    #notification_toast {
        right: 10px;
        left: 10px;
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 10px 16px;
        font-size: 13px;
    }
    
    .card-title {
        font-size: 18px;
    }
    
    .form-control {
        font-size: 14px;
    }
}

/* Checkbox Label Styles */
.checkbox-label:hover {
    border-color: var(--cf-orange) !important;
    background: #fff !important;
}

.checkbox-label input[type="checkbox"]:checked + span {
    color: var(--cf-orange);
}

.checkbox-label input[type="checkbox"]:checked {
    accent-color: var(--cf-orange);
}

/* API Status Indicator */
.api-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: #E8F5E9;
    color: #2E7D32;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    border: 2px solid #4CAF50;
}

.api-status i {
    font-size: 14px;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 4px;
}

.lang-btn {
    padding: 6px 12px;
    border-radius: 4px;
    background: var(--light-bg);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 12px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.lang-btn:hover {
    background: white;
    border-color: var(--cf-orange);
}

.lang-btn.active {
    background: var(--cf-orange);
    color: white;
}

/* Notification Toast */
#notification_toast {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 300px;
    max-width: 400px;
    background: white;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    padding: 16px 20px;
    z-index: 10000;
    display: none;
    animation: slideInRight 0.3s ease;
}

#notification_toast.success {
    border-color: var(--success-color);
    background: #E8F5E9;
}

#notification_toast.error {
    border-color: var(--danger-color);
    background: #FFEBEE;
}

#notification_toast .toast-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-weight: 600;
}

#notification_toast.success .toast-header {
    color: var(--success-color);
}

#notification_toast.error .toast-header {
    color: var(--danger-color);
}

#notification_toast .toast-body {
    color: var(--text-primary);
    font-size: 14px;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}