/* ================================================
   SEO Dashboard — Premium Dark Theme
   Forked from Brain Control Panel, rebranded indigo/purple
   ================================================ */

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

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-hover: #263348;
    --border: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-dim: #312e81;
    --accent-light: #818cf8;
    --amber: #f59e0b;
    --amber-dim: #451a03;
    --red: #ef4444;
    --red-dim: #450a0a;
    --green: #10b981;
    --green-dim: #064e3b;
    --blue: #3b82f6;
    --sidebar-width: 250px;
    /* Semantic status colors */
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.15);
    /* Surface variants */
    --surface: #1e293b;
    --surface-alt: #162032;
    --surface-hover: #263348;
    --border-subtle: rgba(51, 65, 85, 0.5);
    /* Spacing scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    /* Border radius scale */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.5;
}

/* ── Status badge utilities ──────────────────────────────────── */
.status-pass { color: var(--success); }
.status-warn { color: var(--warning); }
.status-fail { color: var(--danger); }
.status-info { color: var(--info); }
.bg-pass { background: var(--success-bg); }
.bg-warn { background: var(--warning-bg); }
.bg-fail { background: var(--danger-bg); }
.bg-info { background: var(--info-bg); }

/* ── SIDEBAR ──────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    overflow: hidden;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 16px 12px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.logo-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.logo-sub {
    font-size: 11px;
    color: var(--text-muted);
}

/* ── URL Input Bar ─────────────────────────────────────────── */
.url-input-bar {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.url-label {
    display: block;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.url-input-row {
    display: flex;
    gap: 6px;
}

.url-input {
    flex: 1;
    padding: 8px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13px;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: border-color 0.2s;
}

.url-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
}

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

.url-go-btn {
    padding: 8px 14px;
    background: var(--accent);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.url-go-btn:hover {
    background: var(--accent-light);
}

.url-active {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    padding: 6px 10px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: var(--radius-md);
    font-size: 12px;
    color: var(--accent-light);
}

.url-active-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

.url-clear-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
}

.url-clear-btn:hover {
    color: var(--red);
}

/* ── Sidebar Navigation ─────────────────────────────────── */
.sidebar-nav-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.sidebar-nav-scroll::-webkit-scrollbar { width: 4px; }
.sidebar-nav-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.nav-section {
    margin-bottom: 2px;
}

.nav-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 14px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.nav-section-header:hover {
    color: var(--text-secondary);
}

.nav-chevron {
    font-size: 12px;
    transition: transform 0.2s;
}

.nav-section-items {
    padding: 0 6px 4px;
}

.nav-item {
    display: block;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.nav-item.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-light);
    font-weight: 500;
}

/* ── Sidebar Footer ──────────────────────────────────────── */
.sidebar-footer {
    padding: 10px 14px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.footer-meta {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 4px;
}

.version-tag {
    font-size: 10px;
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.logout-link {
    display: block;
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    text-decoration: none;
    padding: 4px;
}

.logout-link:hover {
    color: var(--red);
}

/* ── MAIN CONTENT ──────────────────────────────────────── */
.main {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: var(--space-lg);
    min-height: 100vh;
    max-width: 1200px;
}

.tab-panel {
    display: none;
}

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

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: 12px;
}

.page-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.page-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ── Skeleton Loader ──────────────────────────────────── */
.skeleton-loader {
    padding: 20px 0;
}

.skel-line {
    height: 14px;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    animation: skel-pulse 1.5s ease-in-out infinite;
}

.skel-title { width: 40%; height: 20px; }
.skel-text { width: 80%; }
.skel-short { width: 50%; }

.skel-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 20px 0;
}

.skel-card {
    height: 100px;
    background: var(--bg-hover);
    border-radius: var(--radius-lg);
    animation: skel-pulse 1.5s ease-in-out infinite;
}

@keyframes skel-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.7; }
}

.skeleton {
    background: var(--bg-hover);
    border-radius: var(--radius-lg);
    animation: skel-pulse 1.5s ease-in-out infinite;
}

/* ── Tool Container ──────────────────────────────────── */
.tool-container {
    max-width: 900px;
    margin: 0 auto;
}

/* ── Cards ──────────────────────────────────────────── */
.seo-card, .card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.seo-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.seo-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.seo-card-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ── Score Badge ───────────────────────────────────── */
.score-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 28px;
    padding: 0 10px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 700;
}

.score-badge.grade-a { background: var(--success-bg); color: var(--success); }
.score-badge.grade-b { background: rgba(16, 185, 129, 0.1); color: #34d399; }
.score-badge.grade-c { background: var(--warning-bg); color: var(--warning); }
.score-badge.grade-d { background: rgba(239, 68, 68, 0.1); color: #f87171; }
.score-badge.grade-f { background: var(--danger-bg); color: var(--danger); }
.score-badge.score-badge-good { background: var(--success-bg); color: var(--success); }
.score-badge.score-badge-avg { background: var(--warning-bg); color: var(--warning); }
.score-badge.score-badge-poor { background: var(--danger-bg); color: var(--danger); }

/* ── Checklist Items ─────────────────────────────────── */
.seo-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    font-size: 13px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: background 0.15s;
    margin: 2px 0;
}

.seo-check:hover {
    background: rgba(99, 102, 241, 0.04);
}

.seo-check.checked {
    opacity: 0.5;
}

.seo-check.checked .seo-check-label {
    text-decoration: line-through;
}

.seo-check-box {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    margin-top: 1px;
    transition: all 0.15s;
}

.seo-check.checked .seo-check-box {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.seo-check-label {
    font-weight: 500;
    color: var(--text-primary);
}

.seo-check-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ── Buttons ───────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.15s ease;
}
.btn:hover { background: var(--surface-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:hover { background: #4f46e5; }

/* ── Progress Bar ───────────────────────────────────── */
.seo-progress {
    width: 100%;
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    margin: 8px 0;
}

.seo-progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.seo-progress-fill.good { background: var(--success); }
.seo-progress-fill.ok { background: var(--warning); }
.seo-progress-fill.poor { background: var(--danger); }
.seo-progress-fill.accent { background: var(--accent); }

/* ── Score Summary Row ──────────────────────────────── */
.score-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 13px;
}

.score-summary-label {
    color: var(--text-secondary);
}

.score-summary-value {
    font-weight: 700;
}

/* ── Info Callout ─────────────────────────────────── */
.seo-callout {
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.seo-callout strong {
    color: var(--accent-light);
}

/* ── Buttons ───────────────────────────────────────── */
.seo-btn {
    padding: 8px 20px;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 600;
    font-size: 13px;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.15s;
}

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

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

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

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

.seo-btn-row {
    display: flex;
    gap: 8px;
    margin-top: var(--space-md);
}

/* ── Pillar Tabs ──────────────────────────────────── */
.pillar-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.pillar-tab {
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.15s;
}

.pillar-tab:hover {
    color: var(--text-secondary);
    border-color: var(--text-muted);
}

.pillar-tab.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-light);
    border-color: rgba(99, 102, 241, 0.3);
}

/* ── Tables ──────────────────────────────────────── */
.seo-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.seo-table th {
    text-align: left;
    padding: 8px 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.seo-table td {
    padding: 8px 10px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
}

.seo-table tr:hover td {
    background: rgba(99, 102, 241, 0.03);
}

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { text-align: left; padding: 8px 10px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.data-table td { padding: 8px 10px; color: var(--text-secondary); border-bottom: 1px solid rgba(51, 65, 85, 0.5); }
.data-table tr:hover td { background: rgba(99, 102, 241, 0.03); }

/* ── Impact Badge ─────────────────────────────────── */
.impact-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.impact-high { background: var(--danger-bg); color: var(--danger); }
.impact-medium { background: var(--warning-bg); color: var(--warning); }
.impact-low { background: var(--info-bg); color: var(--info); }

/* ── Hub Cards Grid ──────────────────────────────── */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.hub-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all 0.2s;
}

.hub-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.hub-card-icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.hub-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.hub-card-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.hub-card-count {
    margin-top: 10px;
    font-size: 11px;
    color: var(--accent-light);
    font-weight: 500;
}

/* ── Empty State ─────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 14px;
    line-height: 1.6;
}

/* ── Hamburger (mobile) ──────────────────────────── */
.hamburger-btn {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 20px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

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

    .hamburger-btn {
        display: block;
    }

    .main {
        margin-left: 0;
        padding: var(--space-md);
    }

    .hub-grid {
        grid-template-columns: 1fr;
    }

    .skel-grid {
        grid-template-columns: 1fr;
    }
}

/* ── Print ───────────────────────────────────────── */
@media print {
    .sidebar, .hamburger-btn { display: none !important; }
    .main { margin-left: 0 !important; }
}