/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #f0f2f5;
    --color-surface: #ffffff;
    --color-border: #e2e6ea;
    --color-text: #1a1d21;
    --color-text-secondary: #5f6b7a;
    --color-text-muted: #8b95a5;

    --color-primary: #1a56db;
    --color-primary-hover: #1648b8;
    --color-primary-light: #e8effc;

    --color-green: #059669;
    --color-green-light: #d1fae5;
    --color-red: #dc2626;
    --color-red-light: #fee2e2;
    --color-orange: #d97706;
    --color-orange-light: #fef3c7;
    --color-purple: #7c3aed;
    --color-purple-light: #ede9fe;
    --color-blue: #2563eb;
    --color-blue-light: #dbeafe;

    --sidebar-width: 240px;
    --topbar-height: 56px;
    --radius: 8px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
    --transition: 150ms ease;

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
}

body {
    display: flex;
    min-height: 100vh;
    background: var(--color-bg);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--color-text);
    color: #fff;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    padding: 4px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.7);
    font-weight: 500;
    font-size: 14px;
    transition: all var(--transition);
    text-decoration: none;
}

.nav-item:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
    text-decoration: none;
}

.nav-item.active {
    background: var(--color-primary);
    color: #fff;
}

.nav-item svg {
    flex-shrink: 0;
    opacity: 0.8;
}

.nav-item.active svg {
    opacity: 1;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.service-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-text-muted);
}

.status-dot.online {
    background: var(--color-green);
    box-shadow: 0 0 6px rgba(5,150,105,0.5);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 99;
}

/* ── Main Content ────────────────────────────────────────── */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: var(--topbar-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    padding: 4px;
}

.page-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.3px;
    flex: 1;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.content {
    flex: 1;
    padding: 24px;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.card-header h2 {
    font-size: 15px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* ── Stats Grid ──────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon-blue { background: var(--color-blue-light); color: var(--color-blue); }
.stat-icon-green { background: var(--color-green-light); color: var(--color-green); }
.stat-icon-purple { background: var(--color-purple-light); color: var(--color-purple); }
.stat-icon-orange { background: var(--color-orange-light); color: var(--color-orange); }

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

.stat-value {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ── Grids ───────────────────────────────────────────────── */
.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.settings-grid .card:last-child {
    grid-column: 1 / -1;
}

/* ── Tables ──────────────────────────────────────────────── */
.table-wrap {
    overflow-x: auto;
}

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

.table th {
    text-align: left;
    padding: 10px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
}

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

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

.table-empty {
    text-align: center;
    padding: 32px 12px !important;
    color: var(--color-text-muted);
}

.table-footer {
    padding: 12px 20px;
    font-size: 13px;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
}

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

.sortable:hover {
    color: var(--color-primary);
}

.row-review {
    background: var(--color-orange-light) !important;
}

.text-right {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.text-mono {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
}

/* ── Badges ──────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
}

.badge-green { background: var(--color-green-light); color: var(--color-green); }
.badge-red { background: var(--color-red-light); color: var(--color-red); }
.badge-orange { background: var(--color-orange-light); color: var(--color-orange); }
.badge-blue { background: var(--color-blue-light); color: var(--color-blue); }
.badge-purple { background: var(--color-purple-light); color: var(--color-purple); }
.badge-muted { background: var(--color-bg); color: var(--color-text-secondary); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn:hover {
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    padding: 6px;
}

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

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

.btn-xs {
    padding: 4px 8px;
    font-size: 11px;
}

.btn-danger:hover {
    color: var(--color-red);
    background: var(--color-red-light);
}

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

/* ── Forms ────────────────────────────────────────────────── */
.form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
}

.input {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: inherit;
    transition: border-color var(--transition);
    background: var(--color-surface);
    color: var(--color-text);
}

.input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.input-sm {
    padding: 6px 10px;
    font-size: 12px;
}

.form-feedback {
    font-size: 13px;
    margin-top: 4px;
}

.form-feedback.success { color: var(--color-green); }
.form-feedback.error { color: var(--color-red); }

/* ── Vendors ─────────────────────────────────────────────── */
.vendor-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.vendor-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.vendor-item:hover {
    background: var(--color-bg);
}

.vendor-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.vendor-name {
    text-transform: capitalize;
    font-size: 14px;
}

.vendor-aliases {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.alias-tag {
    display: inline-block;
    padding: 1px 6px;
    background: var(--color-bg);
    border-radius: 4px;
    font-size: 11px;
    color: var(--color-text-secondary);
}

/* ── Upload / Dropzone ───────────────────────────────────── */
.upload-container {
    max-width: 640px;
    margin: 0 auto;
}

.dropzone {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

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

.dropzone-icon {
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.dropzone-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text);
}

.dropzone-subtext {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.dropzone-formats {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 12px;
}

.file-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.file-preview svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.file-name {
    font-weight: 500;
    font-size: 14px;
}

.file-size {
    font-size: 12px;
    color: var(--color-text-muted);
}

.upload-actions {
    display: flex;
    justify-content: center;
}

.upload-status {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 8px;
}

.progress-bar {
    height: 4px;
    background: var(--color-bg);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 2px;
    transition: width 300ms ease;
}

/* ── Upload Result ───────────────────────────────────────── */
.upload-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.result-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    border-radius: var(--radius);
    width: 100%;
    text-align: center;
}

.result-success {
    background: var(--color-green-light);
    color: var(--color-green);
}

.result-success h3 {
    color: var(--color-green);
}

.result-error {
    background: var(--color-red-light);
    color: var(--color-red);
}

.result-error h3 {
    color: var(--color-red);
}

.result-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    color: var(--color-text);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
}

.result-row span {
    color: var(--color-text-secondary);
}

/* ── Settings ────────────────────────────────────────────── */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.setting-row:last-child {
    border-bottom: none;
}

.setting-label {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.setting-value {
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.about-info p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

/* ── Utility ─────────────────────────────────────────────── */
.text-muted {
    color: var(--color-text-muted);
    font-size: 13px;
}

.link-subtle {
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}

/* ── Bar Chart ───────────────────────────────────────────── */
.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.bar-label {
    width: 120px;
    font-size: 13px;
    color: var(--color-text-secondary);
    flex-shrink: 0;
    text-align: right;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bar-track {
    flex: 1;
    height: 8px;
    background: var(--color-bg);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 4px;
    transition: width 600ms ease;
    min-width: 4px;
}

.bar-value {
    width: 32px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
}

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

    .grid-2col,
    .settings-grid {
        grid-template-columns: 1fr;
    }

    .settings-grid .card:last-child {
        grid-column: auto;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: block;
    }

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

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .content {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-value {
        font-size: 20px;
    }

    .header-actions {
        flex-direction: column;
    }

    .top-bar-actions .btn span {
        display: none;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}