/* ═══════════════════════════════════════════════
   Landing Page Styles
   ═══════════════════════════════════════════════ */

.hero {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #7c3aed 100%);
    color: #fff;
    padding: var(--space-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(255,255,255,0.03) 0%, transparent 50%);
    pointer-events: none;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: var(--space-md);
    line-height: 1.2;
    position: relative;
}

.hero .hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.6;
    position: relative;
}

.hero .hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    position: relative;
}

.hero .btn-hero {
    padding: 16px 40px;
    font-size: 1.125rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.hero .btn-hero-primary {
    background: #fff;
    color: var(--primary);
}
.hero .btn-hero-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.hero .btn-hero-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
}
.hero .btn-hero-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.1);
}

/* ─── Features ───────────────────────────────── */
.features-section {
    padding: var(--space-3xl) 0;
}

.features-section h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
    font-size: 2rem;
}

.feature-card {
    text-align: center;
    padding: var(--space-xl);
}

.feature-card .feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
    font-size: 1.125rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ─── CEFR Scale ─────────────────────────────── */
.cefr-section {
    padding: var(--space-3xl) 0;
    background: var(--bg-alt);
}

.cefr-scale {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-xl);
}

.cefr-item {
    text-align: center;
    padding: var(--space-lg) var(--space-sm);
    border-radius: var(--radius-md);
    background: var(--surface);
    border: 2px solid var(--border);
    transition: transform 0.2s, border-color 0.2s;
}

.cefr-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.cefr-item .cefr-label {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
}

.cefr-item .cefr-name {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.cefr-item .cefr-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ─── CTA Section ────────────────────────────── */
.cta-section {
    padding: var(--space-3xl) 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.cta-section p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

/* ─── Responsive ─────────────────────────────── */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero .hero-subtitle { font-size: 1rem; }
    .hero .hero-cta { flex-direction: column; align-items: center; }
    .cefr-scale { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
    .hero { padding: var(--space-2xl) 0; }
    .hero h1 { font-size: 1.75rem; }
    .cefr-scale { grid-template-columns: repeat(2, 1fr); }
}