:root {
    --bg: #0a0e17;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --border: #1e293b;
    --border-focus: #3b82f6;
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --text-muted: #64748b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

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

/* Header */
header {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--accent);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.subtitle {
    color: var(--text-dim);
    font-size: 0.85rem;
}

.stats {
    margin-left: auto;
    display: flex;
    gap: 1.5rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.stat-value {
    color: var(--accent);
    font-weight: 600;
    font-size: 1rem;
}

/* Navigation */
nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem 0;
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border);
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-dim);
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.03);
}

.nav-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Main */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-desc {
    color: var(--text-dim);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 0.75rem;
}

label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input, select {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.65rem 0.9rem;
    color: var(--text);
    font-size: 0.9rem;
    transition: border-color 0.2s;
    outline: none;
}

input:focus, select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input::placeholder {
    color: var(--text-muted);
}

/* Dropzone */
.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    min-height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

.dropzone-content {
    color: var(--text-dim);
}

.dropzone-content svg {
    margin-bottom: 0.75rem;
    opacity: 0.5;
}

.dropzone-content .link {
    color: var(--accent);
    text-decoration: underline;
}

.dropzone-content .hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
}

.wsq-placeholder {
    text-align: center;
    color: var(--text-dim);
    padding: 1rem;
}

.bulk-file-list {
    text-align: left;
    max-height: 300px;
    overflow-y: auto;
    width: 100%;
}

.bulk-items, .bulk-results {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-top: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.bulk-item, .bulk-result-item {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.4rem 0.6rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius);
    font-size: 0.8rem;
}

.bulk-result-item {
    grid-template-columns: 20px 1fr auto auto;
}

.bulk-item-name {
    font-family: monospace;
    color: var(--text);
}

.bulk-item-meta {
    color: var(--text-dim);
    font-size: 0.75rem;
}

.bulk-item-size, .bulk-item-detail {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-align: right;
}

code {
    background: rgba(255, 255, 255, 0.06);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.85em;
}

.dropzone-preview {
    position: relative;
    width: 100%;
}

.dropzone-preview img {
    max-height: 200px;
    max-width: 100%;
    border-radius: var(--radius);
    object-fit: contain;
}

.btn-clear {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--danger);
    color: white;
    border: 2px solid var(--bg-card);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* Buttons */
.btn {
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Result boxes */
.result-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.result-match {
    border-color: var(--success);
    background: var(--success-bg);
}

.result-no-match {
    border-color: var(--danger);
    background: var(--danger-bg);
}

.result-info {
    border-color: var(--accent);
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.result-stat {
    text-align: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius);
}

.result-stat .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 0.25rem;
}

.result-stat .value {
    font-size: 1.3rem;
    font-weight: 700;
}

.result-stat .value.match { color: var(--success); }
.result-stat .value.no-match { color: var(--danger); }
.result-stat .value.accent { color: var(--accent); }

/* Score bar */
.score-bar-container {
    margin: 1rem 0;
}

.score-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.score-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
}

.score-bar-threshold {
    position: absolute;
    top: -4px;
    width: 2px;
    height: 16px;
    background: var(--warning);
}

.score-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

/* Visualization result */
.viz-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

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

.viz-image img {
    max-width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.viz-image .caption {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.5rem;
}

.viz-legend {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.75rem;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-dot.ending { background: #ef4444; }
.legend-dot.bifurcation { background: #3b82f6; }

/* Table */
.table-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

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

thead th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

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

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-dim);
}

.empty-state svg {
    opacity: 0.3;
    margin-bottom: 1rem;
}

/* Candidate list */
.candidate-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.candidate-item {
    display: grid;
    grid-template-columns: 40px 1fr 100px 80px;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.candidate-rank {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-muted);
    text-align: center;
}

.candidate-rank.top { color: var(--success); }

.candidate-info .candidate-id {
    font-weight: 600;
}

.candidate-score {
    text-align: right;
    font-weight: 600;
    font-size: 1.1rem;
}

.candidate-badge {
    text-align: center;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-match {
    background: var(--success-bg);
    color: var(--success);
}

.badge-below {
    background: var(--warning-bg);
    color: var(--warning);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
}

/* Database toolbar */
.db-toolbar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: center;
}

.search-box {
    flex: 1;
}

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

/* Pagination */
.pagination {
    display: flex;
    gap: 0.35rem;
    margin-top: 1rem;
    justify-content: center;
}

.page-btn {
    padding: 0.4rem 0.75rem !important;
    font-size: 0.8rem !important;
    min-width: 36px;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
}

.stat-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.stat-card-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 0.4rem;
}

.stat-card-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
}

/* Finger distribution */
.finger-dist {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.finger-bar-row {
    display: grid;
    grid-template-columns: 120px 1fr 40px;
    align-items: center;
    gap: 0.75rem;
}

.finger-label {
    font-size: 0.8rem;
    color: var(--text-dim);
    text-align: right;
}

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

.finger-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #6366f1);
    border-radius: 4px;
    min-width: 2px;
}

.finger-count {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
}

/* Jobs list */
.jobs-section-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 0.75rem;
}

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

.job-card {
    display: grid;
    grid-template-columns: 32px 1fr;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    align-items: start;
}

.job-card-active {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

.job-card-icon {
    font-size: 1.2rem;
    text-align: center;
    padding-top: 0.15rem;
}

.job-card-active .job-card-icon {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.job-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.job-card-type {
    font-weight: 600;
    font-size: 0.9rem;
}

.job-card-status {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.job-card-meta {
    display: flex;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.job-card-id {
    font-family: monospace;
    font-size: 0.7rem;
}

.job-card-msg {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

.job-card-progress {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.job-card-progress .job-progress-bar {
    flex: 1;
}

.job-card-pct {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    min-width: 60px;
    text-align: right;
}

.job-card-detail {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

/* Job Tracker */
.job-tracker {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #1e293b;
    border-top: 1px solid var(--accent);
    padding: 0.75rem 2rem;
    z-index: 100;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.job-tracker-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.job-tracker-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
}

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

.job-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #6366f1);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.job-tracker-msg {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

/* Responsive */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

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

    .stats {
        margin-left: 0;
    }

    .viz-container {
        grid-template-columns: 1fr;
    }

    .candidate-item {
        grid-template-columns: 30px 1fr;
        gap: 0.5rem;
    }

    nav {
        overflow-x: auto;
    }
}