/* ============================================================
   LLMRanky — Global Styles
   Source: DESIGN_SYSTEM.md
   Mobile-first · CSS custom properties · Semantic HTML5
   ============================================================ */

/* ── Reset ──────────────────────────────────────────────────── */

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote {
    margin: 0; padding: 0;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ── Color System (§2) ──────────────────────────────────────── */

:root {
    --color-primary: #2563EB;
    --color-primary-hover: #1D4ED8;
    --color-primary-light: #DBEAFE;
    --color-primary-bg: #EFF6FF;
    --color-secondary: #7C3AED;
    --color-secondary-hover: #6D28D9;
    --color-secondary-light: #EDE9FE;
    --color-secondary-bg: #F5F3FF;
    --color-accent: #F59E0B;
    --color-accent-hover: #D97706;
    --color-accent-light: #FEF3C7;

    --color-excellent: #10B981;
    --color-excellent-bg: #ECFDF5;
    --color-excellent-border: #A7F3D0;
    --color-good: #F59E0B;
    --color-good-bg: #FFFBEB;
    --color-good-border: #FDE68A;
    --color-risky: #F97316;
    --color-risky-bg: #FFF7ED;
    --color-risky-border: #FED7AA;
    --color-critical: #EF4444;
    --color-critical-bg: #FEF2F2;
    --color-critical-border: #FECACA;

    --color-bg: #F9FAFB;
    --color-surface: #FFFFFF;
    --color-surface-hover: #F3F4F6;
    --color-border: #E5E7EB;
    --color-border-strong: #D1D5DB;
    --color-text: #111827;
    --color-text-secondary: #4B5563;
    --color-text-muted: #6B7280;
    --color-text-placeholder: #9CA3AF;
    --color-text-inverse: #FFFFFF;
    --color-overlay: rgba(0, 0, 0, 0.5);

    --gradient-hero: linear-gradient(135deg, #EFF6FF 0%, #F5F3FF 50%, #FEF3C7 100%);
    --gradient-primary: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    --gradient-cta: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
}

/* ── Typography (§3) ────────────────────────────────────────── */

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1 { font-size: var(--text-3xl); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h2 { font-size: var(--text-2xl); font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: var(--text-xl);  font-weight: 600; line-height: 1.3; }
h4 { font-size: var(--text-lg);  font-weight: 600; line-height: 1.3; }

@media (min-width: 768px) {
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-3xl); }
    h3 { font-size: var(--text-2xl); }
}

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

small { font-size: var(--text-sm); }
code { font-family: var(--font-mono); font-size: 0.9em; }

/* ── Spacing & Layout (§4) ──────────────────────────────────── */

:root {
    --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
    --space-4: 1rem;     --space-5: 1.25rem;   --space-6: 1.5rem;
    --space-8: 2rem;     --space-10: 2.5rem;   --space-12: 3rem;
    --space-16: 4rem;    --space-20: 5rem;     --space-24: 6rem;
}

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--space-4); }
@media (min-width: 768px) { .container { padding: 0 var(--space-8); } }
.container-narrow { max-width: 800px; }
.container-xs { max-width: 480px; }

.section { padding: var(--space-16) 0; }
@media (min-width: 768px) { .section { padding: var(--space-24) 0; } }

.section-title { text-align: center; margin-bottom: var(--space-4); }
.section-subtitle { text-align: center; color: var(--color-text-secondary); max-width: 600px; margin: 0 auto var(--space-12); font-size: var(--text-lg); }

/* ── Borders & Shadows (§5) ─────────────────────────────────── */

:root {
    --radius-sm: 0.375rem;  --radius-md: 0.5rem;   --radius-lg: 0.75rem;
    --radius-xl: 1rem;      --radius-full: 9999px;

    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.06), 0 4px 6px rgba(0,0,0,0.03);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.08), 0 8px 10px rgba(0,0,0,0.04);

    --ring-primary: 0 0 0 3px rgba(37,99,235,0.2);
    --ring-error: 0 0 0 3px rgba(239,68,68,0.2);

    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ── Animations (§7) ────────────────────────────────────────── */

.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-stagger > * { opacity: 0; transform: translateY(20px); transition: opacity 0.4s ease, transform 0.4s ease; }
.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 100ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 200ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 300ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 500ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: 600ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: 700ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(9) { transition-delay: 800ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(10) { transition-delay: 900ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(11) { transition-delay: 1000ms; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(12) { transition-delay: 1100ms; opacity: 1; transform: translateY(0); }

.skeleton {
    background: linear-gradient(90deg, var(--color-surface-hover) 25%, var(--color-border) 50%, var(--color-surface-hover) 75%);
    background-size: 200% 100%; animation: skeleton-pulse 1.5s ease-in-out infinite; border-radius: var(--radius-sm);
}
@keyframes skeleton-pulse { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

@keyframes progress-fill { 0% { width: 0; } }

.hero-bg {
    background: var(--gradient-hero); position: relative; overflow: hidden;
}
.hero-bg::before {
    content: ''; position: absolute; width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(37,99,235,0.1) 0%, transparent 70%);
    top: -200px; right: -200px; animation: float 20s ease-in-out infinite;
}
.hero-bg::after {
    content: ''; position: absolute; width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(124,58,237,0.08) 0%, transparent 70%);
    bottom: -150px; left: -100px; animation: float 25s ease-in-out infinite reverse;
}
@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 30px); }
}

/* ── Responsive Grid (§8) ───────────────────────────────────── */

.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ── Navigation ─────────────────────────────────────────────── */

.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }

.nav-logo { display: flex; align-items: center; gap: var(--space-1); font-weight: 700; font-size: var(--text-xl); }
.nav-logo-icon { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-logo-text { color: var(--color-text); }

.nav-menu { display: flex; align-items: center; gap: var(--space-8); }
.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-link { font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary); transition: color var(--transition-fast); }
.nav-link:hover, .nav-link.active { color: var(--color-primary); }

.nav-actions { display: flex; align-items: center; gap: var(--space-3); }

.nav-credits { display: flex; align-items: center; gap: var(--space-1); font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary); padding: var(--space-1) var(--space-3); background: var(--color-primary-bg); border-radius: var(--radius-full); }

.nav-dropdown { position: relative; }
.nav-user-btn {
    display: flex; align-items: center; gap: var(--space-2);
    background: none; border: 1px solid var(--color-border); border-radius: var(--radius-full);
    padding: var(--space-1) var(--space-3); cursor: pointer; transition: all var(--transition-fast);
}
.nav-user-btn:hover { border-color: var(--color-border-strong); background: var(--color-surface-hover); }
.nav-avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--gradient-primary); color: var(--color-text-inverse); display: flex; align-items: center; justify-content: center; font-size: var(--text-xs); font-weight: 600; }
.nav-user-email { font-size: var(--text-sm); color: var(--color-text-secondary); max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.nav-dropdown-menu {
    display: none; position: absolute; right: 0; top: calc(100% + 8px);
    background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg); min-width: 200px; padding: var(--space-2); z-index: 110;
}
.nav-dropdown-menu.open { display: block; }
.nav-dropdown-label { display: block; padding: var(--space-2) var(--space-3); font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
.nav-dropdown-item { display: block; width: 100%; padding: var(--space-2) var(--space-3); font-size: var(--text-sm); color: var(--color-text-secondary); border-radius: var(--radius-sm); transition: all var(--transition-fast); background: none; border: none; text-align: left; cursor: pointer; }
.nav-dropdown-item:hover { background: var(--color-surface-hover); color: var(--color-text); }
.nav-dropdown-sep { border: none; border-top: 1px solid var(--color-border); margin: var(--space-2) 0; }

.nav-lang { display: flex; gap: 2px; margin-right: var(--space-2); }
.nav-lang-btn {
    padding: 2px 6px; font-size: 11px; font-weight: 600; border-radius: var(--radius-sm);
    color: var(--color-text-muted); transition: all var(--transition-fast); text-decoration: none;
}
.nav-lang-btn:hover { color: var(--color-primary); background: var(--color-primary-bg); }
.nav-lang-btn.active { color: var(--color-primary); background: var(--color-primary-bg); font-weight: 700; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: var(--space-2); }
.nav-toggle-bar { display: block; width: 20px; height: 2px; background: var(--color-text); margin: 4px 0; transition: all var(--transition-fast); border-radius: 2px; }

.nav-has-dropdown { position: relative; }
.nav-features-btn {
    display: inline-flex; align-items: center; background: none; border: none; cursor: pointer;
    font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary);
    padding: 0; transition: color var(--transition-fast); font-family: inherit;
}
.nav-features-btn:hover { color: var(--color-primary); }
.nav-features-menu {
    display: none; position: absolute; left: 50%; transform: translateX(-50%);
    top: calc(100% + 12px); background: var(--color-surface);
    border: 1px solid var(--color-border); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl); width: 320px; padding: var(--space-2); z-index: 120;
}
.nav-features-menu.open { display: block; }
.nav-features-item {
    display: block; padding: var(--space-3); border-radius: var(--radius-md);
    text-decoration: none; transition: background var(--transition-fast);
}
.nav-features-item:hover { background: var(--color-surface-hover); }
.nav-features-item strong { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--color-text); margin-bottom: 2px; }
.nav-features-item span { font-size: var(--text-xs); color: var(--color-text-muted); }

@media (max-width: 767px) {
    .nav-toggle { display: block; }
    .nav-menu {
        display: none; position: absolute; top: 64px; left: 0; right: 0;
        background: var(--color-surface); border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg); flex-direction: column; padding: var(--space-4); gap: var(--space-4);
    }
    .nav-menu.open { display: flex; }
    .nav-links { flex-direction: column; gap: var(--space-3); width: 100%; }
    .nav-link { font-size: var(--text-base); padding: var(--space-2) 0; }
    .nav-actions { width: 100%; flex-direction: column; gap: var(--space-2); }
    .nav-actions .btn { width: 100%; justify-content: center; }
    .nav-user-email { display: none; }
    .nav-features-menu {
        position: static; transform: none; width: 100%;
        box-shadow: none; border: none; padding: 0 0 0 var(--space-3);
        background: transparent;
    }
    .nav-features-menu.open { display: block; }
    .nav-features-item { padding: var(--space-2) 0; }
}

/* ── Footer ─────────────────────────────────────────────────── */

.site-footer { background: var(--color-text); color: var(--color-text-inverse); padding: var(--space-16) 0 var(--space-8); margin-top: var(--space-24); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-8); margin-bottom: var(--space-12); }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
@media (min-width: 640px) and (max-width: 1023px) { .footer-grid-home { grid-template-columns: 1fr 1fr 1fr; } .footer-grid-home .footer-brand { grid-column: 1 / -1; } }
@media (min-width: 1024px) { .footer-grid-home { grid-template-columns: 2fr 1fr 1fr 1fr 1fr; } }

.footer-logo { display: inline-flex; align-items: center; gap: var(--space-1); font-weight: 700; font-size: var(--text-xl); margin-bottom: var(--space-3); }
.footer-logo .nav-logo-icon { background: linear-gradient(135deg, #60A5FA, #A78BFA); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-logo .nav-logo-text { color: var(--color-text-inverse); }
.footer-tagline { color: var(--color-text-muted); font-size: var(--text-sm); }

.footer-heading { font-size: var(--text-sm); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-4); color: var(--color-border-strong); }
.footer-links ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-links a, .footer-links .js-link { font-size: var(--text-sm); color: var(--color-text-muted); transition: color var(--transition-fast); cursor: pointer; text-decoration: none; }
.footer-links a:hover, .footer-links .js-link:hover { color: var(--color-text-inverse); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: var(--space-8); text-align: center; }
.footer-bottom p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ── Accessibility (§9) ─────────────────────────────────────── */

:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ── Utility ────────────────────────────────────────────────── */

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-lg { font-size: var(--text-lg); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.hidden { display: none; }

/* ── Sidebar Layout: Structural (§10) ─────────────────────────── */

.layout-sidebar { background: var(--color-bg); }

.layout-sidebar .main {
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.layout-sidebar .content {
    flex: 1;
    padding: var(--space-6);
    max-width: 1200px;
    width: 100%;
}

.layout-sidebar .content-header { margin-bottom: var(--space-6); }
.layout-sidebar .content-header h1 {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-1);
}

/* ── Sidebar Component ───────────────────────────────────────── */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 260px;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 200;
    transition: transform var(--transition-slow);
}

.sidebar-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 800;
    font-size: var(--text-xl);
}

.sidebar-logo-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--text-sm);
    font-weight: 800;
}

.sidebar-logo-text {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-3);
    overflow-y: auto;
}

.sidebar-section-label {
    padding: var(--space-3) var(--space-3) var(--space-2);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-placeholder);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
    margin-bottom: 2px;
}

.sidebar-link:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.sidebar-link.active {
    background: var(--color-primary-bg);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar-link svg { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.7; }
.sidebar-link.active svg { opacity: 1; }

.sidebar-link-badge {
    margin-left: auto;
    background: var(--color-critical);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: var(--radius-full);
    min-width: 18px;
    text-align: center;
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.sidebar-plan-card {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-secondary-bg) 100%);
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-3);
}

.sidebar-plan-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.sidebar-plan-name { font-size: var(--text-sm); font-weight: 700; color: var(--color-primary); }

.sidebar-plan-badge {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    text-transform: uppercase;
}

.sidebar-plan-stat { margin-bottom: var(--space-2); }

.sidebar-plan-stat-header {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.sidebar-plan-stat-bar {
    height: 4px;
    background: rgba(0,0,0,0.08);
    border-radius: 2px;
    overflow: hidden;
}

.sidebar-plan-stat-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.8s ease;
}

.sidebar-plan-stat-fill.blue { background: var(--color-primary); }
.sidebar-plan-stat-fill.purple { background: var(--color-secondary); }

.sidebar-plan-upgrade {
    display: block;
    width: 100%;
    margin-top: var(--space-3);
    padding: var(--space-2);
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: white;
    font-size: var(--text-xs);
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: background var(--transition-fast);
}

.sidebar-plan-upgrade:hover { background: var(--color-primary-hover); }

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0 0;
}

.sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563EB, #7C3AED);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.sidebar-user-info { flex: 1; min-width: 0; }

.sidebar-user-email {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-user-logout {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.sidebar-user-logout:hover { color: var(--color-critical); background: var(--color-critical-bg); }

/* ── Sidebar Language Switcher ──────────────────────────────── */
/* ── Notifications Bell ──────────────────────────────────────────── */

.sidebar-notifications {
    position: relative;
    padding: var(--space-2) var(--space-3);
    border-top: 1px solid var(--color-border);
}

.sidebar-notif-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.sidebar-notif-btn:hover { background: var(--color-hover); color: var(--color-text); }

.sidebar-notif-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    background: var(--color-critical);
    color: white;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.sidebar-notif-dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    width: 320px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    z-index: 200;
    overflow: hidden;
}

.sidebar-notif-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    font-size: var(--text-sm);
}

.sidebar-notif-mark-all {
    font-size: 12px;
    color: var(--color-primary);
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

.sidebar-notif-list { max-height: 320px; overflow-y: auto; }

.sidebar-notif-empty {
    padding: var(--space-5) var(--space-4);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.sidebar-notif-item {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: background var(--transition-fast);
    text-decoration: none;
    color: var(--color-text);
}

.sidebar-notif-item:hover { background: var(--color-hover); }
.sidebar-notif-item.unread { background: var(--color-primary-bg); }
.sidebar-notif-item.unread:hover { background: rgba(37,99,235,0.12); }

.sidebar-notif-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    flex-shrink: 0;
    margin-top: 6px;
}

.sidebar-notif-content { flex: 1; min-width: 0; }
.sidebar-notif-title { font-size: var(--text-sm); font-weight: 600; line-height: 1.3; }
.sidebar-notif-msg { font-size: 12px; color: var(--color-text-secondary); margin-top: 2px; }
.sidebar-notif-time { font-size: 11px; color: var(--color-text-muted); margin-top: 3px; }

/* ── End Notifications ─────────────────────────────────────────── */

.sidebar-lang {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) 0 var(--space-3);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-3);
}
.sidebar-lang-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    flex: 1;
    font-weight: 500;
}
.sidebar-lang-btn {
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
    text-decoration: none;
    border: 1px solid transparent;
}
.sidebar-lang-btn:hover {
    color: var(--color-primary);
    background: var(--color-primary-bg);
    border-color: var(--color-primary-border);
}
.sidebar-lang-btn.active {
    color: var(--color-primary);
    background: var(--color-primary-bg);
    border-color: var(--color-primary-border);
    font-weight: 700;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    z-index: 300;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    align-items: center;
    justify-content: center;
}

/* ── Sidebar Responsive ─────────────────────────────────────── */

@media (max-width: 1100px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-xl); }
    .layout-sidebar .main { margin-left: 0; }
    .sidebar-toggle { display: flex; }
}

@media (max-width: 768px) {
    .layout-sidebar .content { padding: var(--space-4); }
}

/* ── Hub Mode: Site Cards (§11) ──────────────────────────────── */

.sites-hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-5);
}

.hub-site-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    text-decoration: none;
    color: inherit;
}

.hub-site-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.hub-site-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.hub-site-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-bg), var(--color-secondary-bg));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--color-primary);
    flex-shrink: 0;
}

.hub-site-card-title {
    font-weight: 600;
    font-size: var(--text-base);
    color: var(--color-text);
    line-height: 1.3;
}

.hub-site-card-url {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hub-site-card-stats {
    display: flex;
    gap: var(--space-4);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border);
}

.hub-site-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.hub-site-stat-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.hub-site-stat-label {
    font-size: 10px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.hub-site-card-sector {
    display: inline-flex;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 500;
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.hub-site-card-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-primary);
    gap: var(--space-1);
}

.hub-site-card-footer svg { transition: transform var(--transition-fast); }
.hub-site-card:hover .hub-site-card-footer svg { transform: translateX(3px); }

/* ── Hub Mode: Questions List ───────────────────────────────── */

.hub-sites-list { display: flex; flex-direction: column; gap: var(--space-6); }

.hub-site-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.hub-site-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-3);
    flex-wrap: wrap;
}

.hub-site-section-title {
    font-size: var(--text-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.hub-site-section-meta {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.hub-question-list { list-style: none; margin: 0; padding: 0; }

.hub-question-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-5);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-3);
    transition: background var(--transition-fast);
    text-decoration: none;
    color: inherit;
}

.hub-question-item:last-child { border-bottom: none; }
.hub-question-item:hover { background: var(--color-surface-hover); }

.hub-question-item-text {
    font-size: var(--text-sm);
    color: var(--color-text);
    flex: 1;
    min-width: 0;
}

.hub-question-item-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.hub-question-score {
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--color-bg);
}

.hub-empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-4);
}

.hub-empty-state-icon {
    font-size: 3rem;
    opacity: 0.4;
    margin-bottom: var(--space-4);
}

.hub-empty-state h2 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.hub-empty-state p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

@media (max-width: 640px) {
    .sites-hub-grid { grid-template-columns: 1fr; }
    .hub-question-item { flex-direction: column; align-items: flex-start; }
    .hub-question-item-meta { width: 100%; justify-content: flex-start; }
}