/* ============================================================
   KVtools LMS ��� SaaS Landing Page 2026 — Premium Light
   Uses store.css design tokens (--st-*)
   ============================================================ */

/* ===== HERO ===== */
.ld-hero {
    background: linear-gradient(135deg, var(--st-navy) 0%, #0d2d5a 100%);
    color: #fff;
    padding: 5rem 2rem 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.ld-hero::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background:
        radial-gradient(circle at 30% 70%, rgba(26,75,142,0.2), transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255,115,0,0.12), transparent 50%);
    pointer-events: none;
}
.ld-hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1rem;
    position: relative;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.15;
}
.ld-hero h1 span { color: var(--st-amber); }
.ld-hero p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto 2rem;
    position: relative;
    line-height: 1.6;
}
.ld-hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--st-amber);
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    padding: 0.85rem 2.5rem;
    border-radius: var(--st-radius-lg);
    text-decoration: none;
    position: relative;
    transition: background var(--st-transition), transform var(--st-transition);
}
.ld-hero-cta:hover { background: var(--st-amber-hover); transform: translateY(-1px); }

/* ===== FEATURES ===== */
.ld-features {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 2rem;
}
.ld-section-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--st-carbon);
    margin-bottom: 0.5rem;
}
.ld-section-sub {
    text-align: center;
    color: var(--st-slate);
    font-size: 0.95rem;
    margin-bottom: 3rem;
}
.ld-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.ld-feature {
    background: var(--st-bg);
    border: 1px solid var(--st-border);
    border-radius: var(--st-radius-lg);
    padding: 1.75rem;
    transition: transform var(--st-transition), box-shadow var(--st-transition);
}
.ld-feature:hover {
    transform: translateY(-3px);
    box-shadow: var(--st-shadow-md);
}
.ld-feature-icon {
    width: 44px; height: 44px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--st-navy), #0d2d5a);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: #fff;
}
.ld-feature h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--st-carbon);
    margin-bottom: 0.5rem;
}
.ld-feature p {
    font-size: 0.85rem;
    color: var(--st-slate);
    line-height: 1.55;
}

/* ===== PRICING ===== */
.ld-pricing {
    background: var(--st-bg-alt);
    padding: 4rem 2rem;
}
.ld-pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    max-width: 1100px;
    margin: 0 auto;
}
.ld-plan {
    background: var(--st-bg);
    border: 1px solid var(--st-border);
    border-radius: var(--st-radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    position: relative;
    transition: transform var(--st-transition), box-shadow var(--st-transition);
}
.ld-plan:hover {
    transform: translateY(-3px);
    box-shadow: var(--st-shadow-md);
}
.ld-plan.recommended {
    border-color: var(--st-amber);
    box-shadow: 0 0 0 2px var(--st-amber);
}
.ld-plan-badge {
    position: absolute;
    top: -12px; left: 50%;
    transform: translateX(-50%);
    background: var(--st-amber);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.ld-plan h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--st-carbon);
    margin-bottom: 0.75rem;
}
.ld-plan-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--st-navy);
    margin-bottom: 0.25rem;
}
.ld-plan-period {
    font-size: 0.8rem;
    color: var(--st-muted);
    margin-bottom: 1.25rem;
}
.ld-plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
    text-align: left;
}
.ld-plan-features li {
    font-size: 0.82rem;
    color: var(--st-slate);
    padding: 0.35rem 0 0.35rem 1.25rem;
    position: relative;
}
.ld-plan-features li::before {
    content: '';
    position: absolute;
    left: 0; top: 0.65rem;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--st-amber);
}
.ld-plan-btn {
    display: block;
    width: 100%;
    padding: 0.65rem;
    border-radius: var(--st-radius);
    font-size: 0.88rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all var(--st-transition);
    border: 1.5px solid var(--st-border);
    background: transparent;
    color: var(--st-carbon);
}
.ld-plan-btn:hover {
    border-color: var(--st-amber);
    color: var(--st-amber);
}
.ld-plan-btn.primary {
    background: var(--st-amber);
    border-color: var(--st-amber);
    color: #fff;
}
.ld-plan-btn.primary:hover {
    background: var(--st-amber-hover);
    border-color: var(--st-amber-hover);
}

/* ===== CTA SECTION ===== */
.ld-cta {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--st-navy) 0%, #0d2d5a 100%);
    color: #fff;
}
.ld-cta h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}
.ld-cta p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .ld-pricing-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .ld-hero h1 { font-size: 1.75rem; }
    .ld-hero { padding: 3.5rem 1.5rem 3rem; }
    .ld-features-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .ld-hero { padding: 3rem 1.25rem 2.5rem; }
    .ld-hero h1 { font-size: 1.5rem; }
    .ld-hero p { font-size: 0.95rem; }
    .ld-pricing-grid { grid-template-columns: 1fr; }
}