/* ============================================================
   CSS Variables
   ============================================================ */
:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-hover: #1f2b47;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --elite: #f59e0b;
    --border: #27272a;
    --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ============================================================
   App Layout
   ============================================================ */
.app {
    display: flex;
    min-height: 100vh;
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo i {
    font-size: 1.5rem;
    color: var(--accent);
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

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

.nav-item.active {
    background: var(--bg-hover);
    color: var(--accent);
    border-left-color: var(--accent);
}

.nav-item i {
    font-size: 1.25rem;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.lang-switch {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    flex: 1;
    padding: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.2s;
}

.lang-btn:hover {
    background: var(--bg-hover);
}

.lang-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* ============================================================
   Main Content
   ============================================================ */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 1.5rem 2rem;
    min-height: 100vh;
}

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.topbar-title h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.topbar-actions {
    display: flex;
    gap: 0.75rem;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

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

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-sm:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-elite {
    background: linear-gradient(135deg, var(--elite), #d97706) !important;
    color: white !important;
    border: none !important;
}

.btn-elite:hover {
    opacity: 0.9;
}

.btn-page {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-page:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-page:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ============================================================
   Stats Cards
   ============================================================ */
.stats-section {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s;
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-card.total .stat-icon {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.stat-card.elite .stat-icon {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.stat-card.normal .stat-icon {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
}

.stat-card.status .stat-icon {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
}

.stat-card.status.checking .stat-icon {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.stat-card.status.updating .stat-icon {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-card.countdown .stat-icon {
    background: linear-gradient(135deg, #ec4899, #be185d);
    color: white;
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================================
   Progress Section
   ============================================================ */
.progress-section {
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.progress-section.hidden {
    display: none;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.progress-label {
    color: var(--accent);
    font-weight: 500;
}

.progress-text {
    color: var(--text-secondary);
}

.progress-bar {
    height: 6px;
    background: var(--bg-hover);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #8b5cf6);
    border-radius: 3px;
    transition: width 0.3s;
    width: 0%;
}

/* ============================================================
   Filter Section
   ============================================================ */
.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.filters {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0 0.75rem;
}

.filter-item label {
    color: var(--text-muted);
}

.filter-item select {
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 0.625rem 0;
    font-size: 0.875rem;
    cursor: pointer;
    min-width: 100px;
}

.filter-item select:focus {
    outline: none;
}

.filter-item.search {
    padding: 0 0.75rem;
}

.filter-item.search input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 0.625rem 0;
    font-size: 0.875rem;
    width: 150px;
}

.filter-item.search input:focus {
    outline: none;
}

.filter-item.search input::placeholder {
    color: var(--text-muted);
}

.export-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.export-select {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
}

/* ============================================================
   Table Section
   ============================================================ */
.table-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.table-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.result-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.table-wrapper {
    overflow-x: auto;
}

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

thead {
    background: var(--bg-secondary);
}

th {
    padding: 0.875rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border);
}

tbody tr:hover {
    background: var(--bg-hover);
}

tbody tr:last-child td {
    border-bottom: none;
}

.speed-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.speed-badge.fast {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

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

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

.speed-badge.unknown {
    background: rgba(113, 113, 122, 0.1);
    color: var(--text-muted);
}

.btn-copy {
    padding: 0.375rem 0.625rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-copy:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* ============================================================
   Loading & Empty State
   ============================================================ */
.loading, .no-results {
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
}

.loading.hidden, .no-results.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

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

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

/* ============================================================
   Pagination
   ============================================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.page-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
}

/* ============================================================
   Toast
   ============================================================ */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    z-index: 1000;
    animation: fadeIn 0.3s;
}

.toast.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1200px) {
    .stats-section {
        grid-template-columns: repeat(2, 1fr);
    }
}

.mobile-only {
    display: none;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.sidebar-overlay.active {
    display: block;
}

@media (max-width: 768px) {
    .mobile-only {
        display: flex;
    }
    
    .sidebar {
        position: fixed;
        left: -240px;
        width: 240px;
        transition: left 0.3s;
        z-index: 1000;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .topbar {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .topbar-title h1 {
        font-size: 1.25rem;
    }
    
    .topbar-actions {
        display: flex;
        gap: 0.5rem;
    }
    
    .stats-section {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
    
    .stat-label {
        font-size: 0.7rem;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .filters {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .filter-item {
        flex: 1;
        min-width: 120px;
    }
    
    .filter-item.search {
        flex: 100%;
    }
    
    .export-actions {
        flex-wrap: wrap;
        gap: 0.5rem;
        justify-content: flex-start;
    }
    
    .export-actions .btn {
        flex: 1;
        min-width: 80px;
        justify-content: center;
    }
    
    .table-wrapper {
        font-size: 0.8rem;
    }
    
    th, td {
        padding: 0.5rem;
    }
    
    .pagination {
        margin-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .stats-section {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        flex-direction: row;
        padding: 0.875rem;
    }
    
    .export-actions .btn {
        font-size: 0.75rem;
        padding: 0.5rem;
    }
}

/* ============================================================
   Nav Divider
   ============================================================ */
.nav-divider {
    height: 1px;
    background: var(--border);
    margin: 0.5rem 1rem;
}

/* ============================================================
   API Docs Page
   ============================================================ */
.api-docs-page.hidden {
    display: none;
}

.api-docs {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1rem;
    padding-bottom: 2rem;
}

.api-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.25rem;
    transition: all 0.2s;
}

.api-card:hover {
    border-color: var(--accent);
}

.api-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: var(--text-primary);
}

.api-card h3 i {
    color: var(--accent);
}

.api-endpoint {
    display: block;
    background: var(--bg-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--success);
    margin-bottom: 0.75rem;
    font-family: 'Monaco', 'Menlo', monospace;
}

.api-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.api-card ul {
    margin: 0.5rem 0;
    padding-left: 1.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.api-card li {
    margin-bottom: 0.25rem;
}

.api-card code {
    background: var(--bg-hover);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
}

.api-example {
    display: block;
    background: var(--bg-secondary);
    padding: 0.375rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    color: var(--warning);
    margin-top: 0.375rem;
    font-family: 'Monaco', 'Menlo', monospace;
}
 .hidden {
    display: none !important;
}

.submit-section {
    margin-bottom: 1.5rem;
}

.submit-card {
    max-width: 860px;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow, 0 8px 24px rgba(15, 23, 42, 0.06));
}

.submit-card-header h2 {
    margin: 0 0 0.4rem;
}

.submit-card-header p {
    margin: 0 0 1.25rem;
    color: var(--text-secondary);
}

.submit-card label {
    display: block;
    margin: 0.75rem 0 0.4rem;
    font-weight: 600;
}

.submit-card input,
.submit-card textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: inherit;
    font: inherit;
}

.submit-card textarea {
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.submit-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.submit-result {
    color: var(--text-secondary, #64748b);
}