:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-card: #242424;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #333333;
    --radius: 8px;
    --google: #4285f4;
    --ai: #a855f7;
    --redirect: #f59e0b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Global Filters */
.global-filters {
    margin-bottom: 1rem;
}

.filters-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.date-range {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-range span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.filter-input {
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.filter-input:focus {
    outline: none;
    border-color: var(--accent);
}

.filter-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

@media (max-width: 768px) {
    .filters-row {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-actions {
        margin-left: 0;
        margin-top: 0.5rem;
    }
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: var(--bg-card);
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow-x: auto;
}

.tab-btn {
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

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

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

.tab-content {
    display: none;
}

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

/* Two Column Grid */
.two-col-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .two-col-grid {
        grid-template-columns: 1fr;
    }
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: var(--text-secondary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

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

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

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

.btn-secondary:hover {
    background: var(--border);
}

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

/* File List */
.file-list {
    margin-top: 1.5rem;
}

.file-list h3 {
    margin-bottom: 1rem;
}

.file-list ul {
    list-style: none;
    margin-bottom: 1rem;
}

.file-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
}

.file-list li .file-name {
    font-family: monospace;
    color: var(--text-primary);
}

.file-list li .file-size {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.file-list li .remove-file {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
}

.file-list li .remove-file:hover {
    color: var(--danger);
}

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

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

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

#loading {
    text-align: center;
}

.progress-bar {
    width: 100%;
    max-width: 400px;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    margin: 1rem auto;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.loading-detail {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stats-grid.four-col {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .stats-grid.four-col {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-card.bot {
    border-color: var(--warning);
}

.stat-card.human {
    border-color: var(--success);
}

.stat-card.verified {
    border-color: var(--accent);
}

.stat-card.google {
    border-color: var(--google);
}

.stat-card.ai {
    border-color: var(--ai);
}

.stat-card.success {
    border-color: var(--success);
}

.stat-card.redirect {
    border-color: var(--redirect);
}

.stat-card.client-error {
    border-color: var(--warning);
}

.stat-card.server-error {
    border-color: var(--danger);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

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

.stat-percentage {
    color: var(--warning);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Bar Chart */
.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.bar-label {
    min-width: 120px;
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: right;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bar-container {
    flex: 1;
    height: 24px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.bar {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    padding-left: 8px;
}

.bar.google {
    background: var(--google);
}

.bar.ai {
    background: var(--ai);
}

.bar-value {
    font-size: 0.75rem;
    color: white;
    font-weight: 500;
}

/* Table Header with Controls */
.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.table-header h3 {
    margin-bottom: 0;
}

.table-controls {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.search-input {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.875rem;
    width: 200px;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.filter-select {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Table Container */
.table-container {
    overflow-x: auto;
    max-height: 600px;
    overflow-y: auto;
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    position: sticky;
    top: 0;
    background: var(--bg-card);
    z-index: 1;
}

.data-table th.num,
.data-table td.num {
    text-align: right;
}

.data-table.sortable th {
    cursor: pointer;
    user-select: none;
}

.data-table.sortable th:hover {
    color: var(--text-primary);
}

.data-table.sortable th.sorted-asc::after {
    content: ' ↑';
}

.data-table.sortable th.sorted-desc::after {
    content: ' ↓';
}

.data-table td {
    font-family: monospace;
    font-size: 0.875rem;
}

.data-table td:first-child {
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

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

/* Status Code Pills */
.status-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.status-pill {
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-pill.s2xx {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

.status-pill.s3xx {
    background: rgba(245, 158, 11, 0.2);
    color: var(--redirect);
}

.status-pill.s4xx {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.status-pill.s5xx {
    background: rgba(239, 68, 68, 0.3);
    color: #ff6b6b;
}

/* Inconsistent Flag */
.flag-inconsistent {
    color: var(--warning);
    font-weight: 600;
}

/* Bot Pills */
.bot-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.bot-pill {
    padding: 0.125rem 0.5rem;
    background: rgba(168, 85, 247, 0.2);
    color: var(--ai);
    border-radius: 4px;
    font-size: 0.75rem;
}

/* Table Pagination */
.table-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.table-pagination span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.pagination-controls {
    display: flex;
    gap: 0.5rem;
}

/* Collapsible */
.collapsible h3 {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.toggle-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
}

.toggle-btn:hover {
    background: var(--border);
}

pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.75rem;
    max-height: 400px;
    margin-top: 1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Detail Panel (Master-Detail View) */
.detail-panel {
    margin-top: 1rem;
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.detail-header h3 {
    margin-bottom: 0;
    color: var(--text-primary);
}

.detail-grid {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 0;
    max-height: 300px;
    overflow-y: auto;
}

.detail-row {
    display: contents;
}

.detail-row:hover .detail-name,
.detail-row:hover .detail-value {
    background: var(--bg-secondary);
}

.detail-name {
    padding: 0.5rem 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

.detail-value {
    padding: 0.5rem 1rem;
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    word-break: break-all;
}

/* Selectable table rows */
.data-table tbody tr {
    cursor: pointer;
}

.data-table tbody tr.selected {
    background: rgba(34, 197, 94, 0.15) !important;
}

.data-table tbody tr.selected td {
    border-color: var(--success);
}

/* Alert / Warning Banner */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.alert strong {
    display: block;
    margin-bottom: 0.5rem;
}

.alert details {
    margin-top: 0.75rem;
}

.alert summary {
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.alert summary:hover {
    color: var(--text-primary);
}

.alert pre {
    margin-top: 0.5rem;
    font-size: 0.7rem;
    background: rgba(0, 0, 0, 0.3);
    white-space: pre-wrap;
    word-break: break-all;
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.75rem;
    }

    .drop-zone {
        padding: 2rem 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .bar-label {
        min-width: 80px;
        font-size: 0.75rem;
    }

    .data-table {
        font-size: 0.75rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem;
    }

    .tabs-nav {
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }

    .table-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .table-controls {
        width: 100%;
        flex-wrap: wrap;
    }

    .search-input {
        width: 100%;
    }
}