/* =========================================================
   LangFlow Theme — Wolf Language Learning Platform
   ========================================================= */

:root {
    --lf-primary:       #7C3AED;
    --lf-primary-dark:  #6D28D9;
    --lf-primary-light: #EDE9FE;
    --lf-secondary:     #4F46E5;
    --lf-accent:        #F59E0B;
    --lf-success:       #10B981;
    --lf-danger:        #EF4444;
    --lf-text:          #111827;
    --lf-text-muted:    #6B7280;
    --lf-border:        #E5E7EB;
    --lf-bg-light:      #F9FAFB;
    --lf-white:         #FFFFFF;
    --lf-radius:        14px;
    --lf-radius-sm:     8px;
    --lf-shadow:        0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.04);
    --lf-shadow-lg:     0 20px 40px -8px rgba(124,58,237,.15);
    --lf-font:          'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--lf-font);
    color: var(--lf-text);
    background: var(--lf-white);
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ─── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; margin: 0; }
p { margin: 0; }
a { text-decoration: none; color: inherit; }

.lf-section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    text-align: center;
    margin-bottom: .75rem;
}
.lf-section-subtitle {
    text-align: center;
    color: var(--lf-text-muted);
    font-size: 1.05rem;
    margin-bottom: 3rem;
}

/* ─── Buttons ────────────────────────────────────────────── */
.lf-btn {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .7rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: .95rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .2s ease;
    white-space: nowrap;
}
.lf-btn-primary {
    background: var(--lf-primary);
    color: #fff;
    border-color: var(--lf-primary);
}
.lf-btn-primary:hover { background: var(--lf-primary-dark); border-color: var(--lf-primary-dark); color: #fff; }
.lf-btn-outline {
    background: transparent;
    color: var(--lf-primary);
    border-color: var(--lf-primary);
}
.lf-btn-outline:hover { background: var(--lf-primary-light); color: var(--lf-primary); }
.lf-btn-ghost {
    background: transparent;
    color: var(--lf-text);
    border-color: transparent;
    padding: .65rem 1rem;
}
.lf-btn-ghost:hover { color: var(--lf-primary); }
.lf-btn-white {
    background: #fff;
    color: var(--lf-primary);
    border-color: #fff;
    font-weight: 700;
}
.lf-btn-white:hover { background: var(--lf-primary-light); border-color: var(--lf-primary-light); }
.lf-btn-lg { padding: .85rem 2rem; font-size: 1rem; }

/* ─── Header ─────────────────────────────────────────────── */
.lf-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--lf-border);
}
.lf-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    height: 64px;
}
.lf-logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--lf-primary);
    flex-shrink: 0;
}
.lf-logo svg { stroke: var(--lf-primary); }
.lf-nav-links {
    display: flex;
    align-items: center;
    gap: .25rem;
    flex: 1;
    margin-left: 1rem;
}
.lf-nav-link {
    color: var(--lf-text-muted);
    font-weight: 500;
    font-size: .9rem;
    padding: .4rem .75rem;
    border-radius: 6px;
    transition: color .15s, background .15s;
}
.lf-nav-link:hover { color: var(--lf-primary); background: var(--lf-primary-light); }
.lf-nav-auth {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-shrink: 0;
}
.lf-mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    margin-left: auto;
}
.lf-anim-icon {
    width: 26px;
    height: 18px;
    position: relative;
}
.lf-anim-icon span {
    display: block;
    position: absolute;
    height: 2px;
    width: 100%;
    background: var(--lf-text);
    border-radius: 2px;
    left: 0;
    transition: .25s ease-in-out;
}
.lf-anim-icon span:nth-child(1) { top: 0; }
.lf-anim-icon span:nth-child(2) { top: 8px; }
.lf-anim-icon span:nth-child(3) { top: 16px; }
.lf-anim-icon.open span:nth-child(1) { top: 8px; transform: rotate(135deg); }
.lf-anim-icon.open span:nth-child(2) { opacity: 0; left: -30px; }
.lf-anim-icon.open span:nth-child(3) { top: 8px; transform: rotate(-135deg); }

/* admin nav-tabs inside header */
.lf-nav-links .nav-tabs { border: none; margin: 0; }
.lf-nav-links .nav-tabs .nav-link { border-radius: 6px 6px 0 0; }

/* ─── Main ───────────────────────────────────────────────── */
.lf-main { min-height: calc(100vh - 64px); }

/* ─── Hero ───────────────────────────────────────────────── */
.lf-hero {
    padding: 5rem 0 4rem;
    background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 40%, #DBEAFE 100%);
    overflow: hidden;
    position: relative;
}
.lf-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(124,58,237,.08) 0%, transparent 70%);
    pointer-events: none;
}
.lf-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.lf-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: var(--lf-primary-light);
    color: var(--lf-primary);
    font-size: .8rem;
    font-weight: 600;
    padding: .35rem .9rem;
    border-radius: 50px;
    margin-bottom: 1.25rem;
}
.lf-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    line-height: 1.15;
    margin-bottom: 1.25rem;
}
.lf-hero h1 span { color: var(--lf-primary); }
.lf-hero-desc {
    color: var(--lf-text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 440px;
}
.lf-hero-ctas {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}
.lf-hero-social {
    display: flex;
    align-items: center;
    gap: .75rem;
    color: var(--lf-text-muted);
    font-size: .9rem;
}
.lf-hero-avatars {
    display: flex;
}
.lf-hero-avatars span {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 2px solid #fff;
    background: var(--lf-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    font-weight: 700;
    color: var(--lf-primary);
    margin-left: -8px;
}
.lf-hero-avatars span:first-child { margin-left: 0; }
.lf-rating { color: #F59E0B; font-weight: 700; }

/* App Mockup Card */
.lf-mockup {
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--lf-shadow-lg), 0 1px 3px rgba(0,0,0,.1);
    padding: 1.5rem;
    max-width: 380px;
    margin-left: auto;
    position: relative;
}
.lf-mockup-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.lf-mockup-goal {
    font-size: .78rem;
    color: var(--lf-text-muted);
    margin-bottom: .2rem;
}
.lf-mockup-goal-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--lf-text);
}
.lf-mockup-streak {
    background: #FFF7ED;
    border-radius: 12px;
    padding: .5rem .75rem;
    text-align: center;
    min-width: 70px;
}
.lf-mockup-streak-icon { font-size: 1.4rem; }
.lf-mockup-streak-val { font-size: 1.4rem; font-weight: 800; color: #F97316; }
.lf-mockup-streak-label { font-size: .7rem; color: var(--lf-text-muted); }
.lf-mockup-progress-bar {
    height: 6px;
    background: var(--lf-border);
    border-radius: 3px;
    margin-bottom: .4rem;
    overflow: hidden;
}
.lf-mockup-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--lf-primary), var(--lf-secondary));
    border-radius: 3px;
}
.lf-mockup-progress-label { font-size: .75rem; color: var(--lf-text-muted); }

.lf-mockup-lesson {
    background: var(--lf-bg-light);
    border-radius: 12px;
    padding: .9rem;
    display: flex;
    align-items: center;
    gap: .85rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}
.lf-mockup-lesson-img {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    flex-shrink: 0;
}
.lf-mockup-lesson-info { flex: 1; }
.lf-mockup-lesson-label { font-size: .72rem; color: var(--lf-text-muted); }
.lf-mockup-lesson-name { font-weight: 700; font-size: .95rem; margin: .1rem 0; }
.lf-mockup-lesson-level { font-size: .72rem; color: var(--lf-text-muted); }
.lf-mockup-lesson-btn {
    background: var(--lf-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: .45rem .9rem;
    font-size: .8rem;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}
.lf-mockup-xp { border-top: 1px solid var(--lf-border); padding-top: .85rem; }
.lf-mockup-xp-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: .4rem;
}
.lf-mockup-xp-label { font-size: .78rem; color: var(--lf-text-muted); }
.lf-mockup-xp-badge {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, #4F46E5, #7C3AED);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: .65rem;
    line-height: 1;
    text-align: center;
}

/* ─── Section layouts ────────────────────────────────────── */
.lf-section { padding: 5rem 0; }
.lf-section-alt { background: var(--lf-bg-light); }

/* ─── Feature cards ──────────────────────────────────────── */
.lf-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}
.lf-feature-card {
    background: #fff;
    border: 1px solid var(--lf-border);
    border-radius: var(--lf-radius);
    padding: 1.75rem 1.5rem;
    transition: transform .2s, box-shadow .2s;
}
.lf-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lf-shadow-lg);
}
.lf-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.1rem;
}
.lf-feature-card h4 { font-size: 1.05rem; margin-bottom: .5rem; }
.lf-feature-card p { font-size: .9rem; color: var(--lf-text-muted); line-height: 1.55; }

/* ─── How it works ───────────────────────────────────────── */
.lf-steps {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 1.5rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}
.lf-step {
    text-align: center;
    padding: 1.5rem;
}
.lf-step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--lf-primary);
    color: var(--lf-primary);
    font-weight: 800;
    font-size: .95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto .9rem;
}
.lf-step-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    background: var(--lf-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto .9rem;
}
.lf-step h4 { font-size: 1rem; margin-bottom: .4rem; }
.lf-step p { font-size: .85rem; color: var(--lf-text-muted); }
.lf-step-arrow {
    color: var(--lf-border);
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* ─── Languages ──────────────────────────────────────────── */
.lf-langs-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.25rem;
}
.lf-lang-card {
    background: #fff;
    border: 1px solid var(--lf-border);
    border-radius: var(--lf-radius);
    padding: 1.25rem;
    transition: transform .2s, box-shadow .2s;
}
.lf-lang-card:hover { transform: translateY(-3px); box-shadow: var(--lf-shadow); }
.lf-lang-flag { font-size: 2rem; margin-bottom: .6rem; }
.lf-lang-name { font-weight: 700; font-size: 1rem; margin-bottom: .15rem; }
.lf-lang-level { font-size: .78rem; color: var(--lf-text-muted); margin-bottom: .75rem; }
.lf-lang-bar {
    height: 5px;
    background: var(--lf-border);
    border-radius: 3px;
    margin-bottom: .35rem;
    overflow: hidden;
}
.lf-lang-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--lf-primary), var(--lf-secondary));
    border-radius: 3px;
}
.lf-lang-pct { font-size: .75rem; color: var(--lf-text-muted); margin-bottom: .85rem; }
.lf-lang-btn {
    width: 100%;
    padding: .5rem;
    border-radius: 8px;
    border: none;
    background: var(--lf-primary-light);
    color: var(--lf-primary);
    font-weight: 600;
    font-size: .85rem;
    cursor: pointer;
    transition: background .15s;
}
.lf-lang-btn:hover { background: var(--lf-primary); color: #fff; }

/* ─── Progress section ───────────────────────────────────── */
.lf-progress-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}
.lf-progress-title { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 1rem; }
.lf-progress-desc { color: var(--lf-text-muted); font-size: 1rem; margin-bottom: 2rem; }
.lf-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.lf-stat-card {
    background: #fff;
    border: 1px solid var(--lf-border);
    border-radius: var(--lf-radius-sm);
    padding: 1.1rem;
    display: flex;
    align-items: center;
    gap: .75rem;
}
.lf-stat-icon { font-size: 1.6rem; }
.lf-stat-val { font-size: 1.4rem; font-weight: 800; }
.lf-stat-label { font-size: .78rem; color: var(--lf-text-muted); }

/* Mock chart */
.lf-chart-container {
    background: #fff;
    border: 1px solid var(--lf-border);
    border-radius: var(--lf-radius);
    padding: 1.5rem;
}
.lf-chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}
.lf-chart-title { font-weight: 700; }
.lf-chart-period {
    font-size: .8rem;
    color: var(--lf-text-muted);
    background: var(--lf-bg-light);
    border: 1px solid var(--lf-border);
    border-radius: 6px;
    padding: .25rem .6rem;
}
.lf-chart-svg { width: 100%; height: 140px; }
.lf-chart-days {
    display: flex;
    justify-content: space-between;
    font-size: .72rem;
    color: var(--lf-text-muted);
    margin-top: .5rem;
}
.lf-chart-skills {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--lf-border);
}
.lf-skill-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 4px;
}
.lf-skill-label { font-size: .8rem; color: var(--lf-text-muted); }
.lf-skill-pct { font-weight: 700; font-size: .9rem; }

/* Donut chart */
.lf-donut { width: 80px; height: 80px; flex-shrink: 0; }

/* ─── Testimonials ───────────────────────────────────────── */
.lf-reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.lf-review-card {
    background: #fff;
    border: 1px solid var(--lf-border);
    border-radius: var(--lf-radius);
    padding: 1.75rem;
}
.lf-review-stars { color: #F59E0B; font-size: 1rem; margin-bottom: .85rem; }
.lf-review-text {
    font-size: .95rem;
    color: var(--lf-text-muted);
    line-height: 1.65;
    margin-bottom: 1.25rem;
    font-style: italic;
}
.lf-review-author {
    display: flex;
    align-items: center;
    gap: .75rem;
}
.lf-review-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--lf-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lf-primary);
    font-weight: 700;
    font-size: .9rem;
    flex-shrink: 0;
}
.lf-review-name { font-weight: 700; font-size: .9rem; }
.lf-review-country { font-size: .78rem; color: var(--lf-text-muted); }

/* ─── CTA Banner ─────────────────────────────────────────── */
.lf-cta-banner {
    background: linear-gradient(135deg, #6D28D9 0%, #7C3AED 50%, #4F46E5 100%);
    border-radius: 24px;
    padding: 3.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    position: relative;
    overflow: hidden;
}
.lf-cta-banner::before {
    content: '';
    position: absolute;
    top: -40%;
    right: 20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,.1) 0%, transparent 70%);
    pointer-events: none;
}
.lf-cta-banner h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: .5rem; }
.lf-cta-banner p { color: rgba(255,255,255,.8); font-size: 1rem; }
.lf-cta-illustration {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,.2));
}

/* ─── Footer ─────────────────────────────────────────────── */
.lf-footer {
    background: var(--lf-text);
    color: rgba(255,255,255,.7);
    padding: 4rem 0 2rem;
}
.lf-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}
.lf-footer .lf-logo { color: #fff; margin-bottom: .75rem; display: flex; }
.lf-footer .lf-logo svg { stroke: #fff; }
.lf-footer .lf-logo span { color: #fff; }
.lf-footer-tagline { font-size: .88rem; line-height: 1.6; margin-bottom: .75rem; }
.lf-footer-copy { font-size: .78rem; color: rgba(255,255,255,.45); }
.lf-footer-heading { color: #fff; font-size: .85rem; font-weight: 700; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: .05em; }
.lf-footer-links { list-style: none; padding: 0; margin: 0; }
.lf-footer-links li + li { margin-top: .6rem; }
.lf-footer-links a { font-size: .88rem; color: rgba(255,255,255,.6); transition: color .15s; }
.lf-footer-links a:hover { color: #fff; }

/* ─── Auth Forms ─────────────────────────────────────────── */
.lf-auth-page {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 50%, #DBEAFE 100%);
}
.lf-auth-card {
    background: #fff;
    border-radius: 20px;
    padding: 2.5rem;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--lf-shadow-lg);
}
.lf-auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    color: var(--lf-primary);
    font-weight: 800;
    font-size: 1.2rem;
    margin-bottom: 1.75rem;
}
.lf-auth-title {
    font-size: 1.6rem;
    text-align: center;
    margin-bottom: .4rem;
}
.lf-auth-sub {
    text-align: center;
    color: var(--lf-text-muted);
    font-size: .9rem;
    margin-bottom: 2rem;
}
.lf-form-group { margin-bottom: 1.1rem; }
.lf-form-label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: .4rem;
    color: var(--lf-text);
}
.lf-form-input {
    width: 100%;
    padding: .7rem 1rem;
    border: 1.5px solid var(--lf-border);
    border-radius: var(--lf-radius-sm);
    font-size: .95rem;
    font-family: var(--lf-font);
    color: var(--lf-text);
    background: #fff;
    transition: border-color .15s, box-shadow .15s;
    outline: none;
}
.lf-form-input:focus {
    border-color: var(--lf-primary);
    box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}
.lf-form-input.is-invalid { border-color: var(--lf-danger); }
.lf-form-error {
    font-size: .8rem;
    color: var(--lf-danger);
    margin-top: .3rem;
}
.lf-auth-divider {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin: 1.25rem 0;
}
.lf-auth-divider hr { flex: 1; border: none; border-top: 1px solid var(--lf-border); }
.lf-auth-divider span { font-size: .82rem; color: var(--lf-text-muted); }
.lf-auth-footer {
    text-align: center;
    margin-top: 1.25rem;
    font-size: .88rem;
    color: var(--lf-text-muted);
}
.lf-auth-footer a { color: var(--lf-primary); font-weight: 600; }
.lf-auth-footer a:hover { text-decoration: underline; }
.lf-alert {
    padding: .75rem 1rem;
    border-radius: var(--lf-radius-sm);
    font-size: .88rem;
    margin-bottom: 1rem;
}
.lf-alert-danger { background: #FEF2F2; border: 1px solid #FECACA; color: #B91C1C; }
.lf-alert-success { background: #F0FDF4; border: 1px solid #BBF7D0; color: #15803D; }
.lf-google-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
    padding: .7rem 1rem;
    border: 1.5px solid var(--lf-border);
    border-radius: var(--lf-radius-sm);
    background: #fff;
    color: var(--lf-text);
    font-weight: 600;
    font-size: .9rem;
    cursor: pointer;
    transition: background .15s, border-color .15s;
    text-decoration: none;
}
.lf-google-btn:hover { background: var(--lf-bg-light); border-color: #D1D5DB; color: var(--lf-text); }

/* ─── Cabinet ────────────────────────────────────────────── */
.lf-cabinet {
    min-height: calc(100vh - 64px);
    background: var(--lf-bg-light);
}
.lf-cabinet-header {
    background: #fff;
    border-bottom: 1px solid var(--lf-border);
    padding: 1.5rem 0;
}
.lf-cabinet-body { padding: 2rem 0; }
.lf-cabinet-title { font-size: 1.5rem; }
.lf-cabinet-sub { color: var(--lf-text-muted); font-size: .9rem; margin-top: .25rem; }

/* ─── Admin (lightweight overrides) ─────────────────────── */
.lf-main .card { border-color: var(--lf-border); border-radius: var(--lf-radius-sm); }
.lf-main .nav-tabs { border-bottom-color: var(--lf-border); }
.lf-main .nav-tabs .nav-link.active {
    color: var(--lf-primary);
    border-color: var(--lf-border) var(--lf-border) #fff;
}
.lf-main .btn-primary { background: var(--lf-primary); border-color: var(--lf-primary); }
.lf-main .btn-primary:hover { background: var(--lf-primary-dark); border-color: var(--lf-primary-dark); }

/* ─── 404 ────────────────────────────────────────────────── */
.lf-404 {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem;
}
.lf-404-code {
    font-size: 8rem;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--lf-primary), var(--lf-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ─── Language switcher ──────────────────────────────────── */
.lf-lang-switcher {
    position: relative;
}
.lf-lang-toggle {
    display: flex;
    align-items: center;
    gap: .35rem;
    padding: .35rem .7rem;
    border-radius: 8px;
    border: 1.5px solid var(--lf-border);
    background: transparent;
    font-size: .82rem;
    font-weight: 700;
    font-family: var(--lf-font);
    color: var(--lf-text);
    cursor: pointer;
    letter-spacing: .04em;
    transition: background .15s, border-color .15s;
}
.lf-lang-toggle:hover { background: var(--lf-bg-light); border-color: #D1D5DB; }
.lf-lang-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #fff;
    border: 1px solid var(--lf-border);
    border-radius: var(--lf-radius-sm);
    box-shadow: var(--lf-shadow);
    min-width: 100px;
    overflow: hidden;
    z-index: 1001;
}
@media (max-width: 768px) {
    .lf-lang-menu { right: auto; left: 50%; transform: translateX(-50%); }
}
.lf-lang-switcher.open .lf-lang-menu { display: block; }
.lf-lang-option {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem .9rem;
    font-size: .85rem;
    font-weight: 600;
    color: var(--lf-text-muted);
    text-decoration: none;
    transition: background .12s, color .12s;
    white-space: nowrap;
}
.lf-lang-option:hover { background: var(--lf-bg-light); color: var(--lf-text); }
.lf-lang-option--active { color: var(--lf-primary); pointer-events: none; }
.lf-lang-option--active::after {
    content: '✓';
    margin-left: auto;
    font-size: .75rem;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
    .lf-features-grid { grid-template-columns: repeat(2, 1fr); }
    .lf-langs-grid { grid-template-columns: repeat(3, 1fr); }
    .lf-footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
    .lf-mobile-toggle { display: flex; order: 1; margin-left: 0; }
    .lf-lang-switcher  { order: 2; margin: 0 auto; }
    .lf-logo           { order: 3; }
    .lf-nav { flex-wrap: wrap; gap: 0; }
    .lf-nav-links {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: calc(100% + 30px);
        margin: 0 -15px;
        background: var(--lf-white);
        border-top: 1px solid var(--lf-border);
        padding: .75rem 15px;
        gap: .125rem;
        box-shadow: 0 4px 10px rgba(0,0,0,.06);
    }
    .lf-nav-links.open { display: flex; }
    .lf-nav-links .lf-nav-link { font-size: 1.05rem; padding: .65rem .75rem; }
    .lf-nav-auth {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: calc(100% + 30px);
        margin: 0 -15px;
        background: var(--lf-white);
        border-top: 1px solid var(--lf-border);
        padding: .75rem 15px 1.25rem;
        gap: .6rem;
        box-shadow: 0 4px 10px rgba(0,0,0,.06);
    }
    .lf-nav-auth.open { display: flex; }
    .lf-hero-grid { grid-template-columns: 1fr; }
    .lf-mockup { max-width: 100%; margin: 0; }
    .lf-steps { grid-template-columns: 1fr; }
    .lf-step-arrow { display: none; }
    .lf-langs-grid { grid-template-columns: repeat(2, 1fr); }
    .lf-progress-grid { grid-template-columns: 1fr; }
    .lf-reviews-grid { grid-template-columns: 1fr; }
    .lf-cta-banner { flex-direction: column; text-align: center; }
    .lf-footer-grid { grid-template-columns: 1fr; }
    .lf-cta-illustration { justify-content: center; }
    .lf-section { padding: 3rem 0; }
    .lf-hero { padding: 3rem 0 2.5rem; }
    .lf-cta-banner { padding: 2.5rem 1.75rem; }
}
@media (max-width: 480px) {
    .lf-features-grid { grid-template-columns: 1fr; }
    .lf-langs-grid { grid-template-columns: 1fr; }
    .lf-stats-grid { grid-template-columns: 1fr; }
    .lf-auth-card { padding: 1.75rem; }
    .lf-hero h1 { font-size: 2rem; }
}