/* ============================================
   Mesh3D Optimizer — Landing Page Styles
   ============================================ */

/* Hero */
.m3d-hero {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, #060b18 0%, #0c1a30 50%, #0a2040 100%);
    border-radius: 0 0 24px 24px;
}

.m3d-hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    color: #06b6d4;
    margin-bottom: 16px;
    font-family: 'Inter', system-ui, sans-serif;
}

.m3d-hero p {
    font-size: 1.05rem;
    color: #94a3b8;
    max-width: 680px;
    margin: 0 auto 28px;
    line-height: 1.7;
}

.m3d-download-btn {
    display: inline-block;
    padding: 16px 36px;
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.3);
}

.m3d-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.5);
    color: #fff;
    text-decoration: none;
}

/* Ad Zones */
.m3d-ad-zone {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 24px auto;
    max-width: 320px;
    min-height: 260px;
    border-radius: 8px;
    overflow: hidden;
}

/* Features Grid */
.m3d-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: 40px 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.m3d-feature-card {
    background: var(--bg-secondary, #0c1527);
    border: 1px solid var(--border-primary, #1e3055);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s;
}

.m3d-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    border-color: #06b6d4;
}

.m3d-feature-card .icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.m3d-feature-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary, #e8edf5);
    margin-bottom: 8px;
}

.m3d-feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary, #94a3b8);
    line-height: 1.6;
}

/* Sections */
.m3d-section {
    padding: 40px 0;
}

.m3d-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.m3d-section-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary, #e8edf5);
    margin-bottom: 28px;
    text-align: center;
}

/* How it works steps */
.m3d-steps {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.m3d-step {
    background: var(--bg-secondary, #0c1527);
    border: 1px solid var(--border-primary, #1e3055);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.m3d-step .step-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.m3d-step p {
    font-size: 0.9rem;
    color: var(--text-secondary, #94a3b8);
    line-height: 1.5;
}

/* FAQ */
.m3d-faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.m3d-faq-item {
    background: var(--bg-secondary, #0c1527);
    border: 1px solid var(--border-primary, #1e3055);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.3s;
}

.m3d-faq-item[open] {
    border-color: #06b6d4;
}

.m3d-faq-summary {
    padding: 16px 20px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    color: var(--text-primary, #e8edf5);
    font-size: 0.95rem;
}

.m3d-faq-summary::-webkit-details-marker {
    display: none;
}

.m3d-faq-summary::before {
    content: '▸ ';
    color: #06b6d4;
}

.m3d-faq-item[open] .m3d-faq-summary::before {
    content: '▾ ';
}

.m3d-faq-answer {
    padding: 0 20px 16px;
    font-size: 0.9rem;
    color: var(--text-secondary, #94a3b8);
    line-height: 1.6;
}

/* How it works article */
.m3d-how-article {
    background: var(--bg-secondary, #0c1527);
    border: 1px solid var(--border-primary, #1e3055);
    border-radius: 16px;
    padding: 32px;
}

.m3d-how-article h2 {
    text-align: center;
    margin-bottom: 24px;
}

/* Direct download link */
.m3d-direct-link {
    margin-top: 12px;
    font-size: 0.85rem;
}

.m3d-direct-link a {
    color: #64748b;
    text-decoration: underline;
    transition: color 0.2s;
}

.m3d-direct-link a:hover {
    color: #94a3b8;
}

/* Screenshot */
.m3d-screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    border: 1px solid var(--border-primary, #1e3055);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.m3d-screenshot-caption {
    font-size: 0.85rem;
    color: var(--text-muted, #6b7280);
    margin-top: 12px;
    font-style: italic;
}

/* Testimonials */
.m3d-testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.m3d-testimonial-card {
    background: var(--bg-secondary, #0c1527);
    border: 1px solid var(--border-primary, #1e3055);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s;
}

.m3d-testimonial-card:hover {
    transform: translateY(-3px);
    border-color: #fbbf24;
    box-shadow: 0 8px 24px rgba(251, 191, 36, 0.1);
}

.m3d-stars {
    color: #fbbf24;
    font-size: 1.2rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.m3d-testimonial-text {
    font-size: 0.92rem;
    color: var(--text-secondary, #94a3b8);
    line-height: 1.6;
    margin-bottom: 16px;
    font-style: italic;
}

.m3d-testimonial-author strong {
    color: var(--text-primary, #e8edf5);
    font-weight: 700;
    font-size: 0.9rem;
}

.m3d-testimonial-author span {
    color: var(--text-muted, #6b7280);
    font-size: 0.82rem;
}

/* Related Links */
.m3d-related-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.m3d-related-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--bg-secondary, #0c1527);
    border: 1px solid var(--border-primary, #1e3055);
    border-radius: 14px;
    padding: 20px;
    text-decoration: none;
    transition: all 0.3s;
}

.m3d-related-card:hover {
    transform: translateY(-3px);
    border-color: #06b6d4;
    box-shadow: 0 8px 24px rgba(6, 182, 212, 0.12);
    text-decoration: none;
}

.m3d-related-card .icon {
    font-size: 28px;
    flex-shrink: 0;
    margin-top: 2px;
}

.m3d-related-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary, #e8edf5);
    margin-bottom: 4px;
}

.m3d-related-card p {
    font-size: 0.82rem;
    color: var(--text-secondary, #94a3b8);
    line-height: 1.5;
}

/* Responsive */
@media (max-width: 640px) {
    .m3d-hero h1 {
        font-size: 1.6rem;
    }

    .m3d-hero p {
        font-size: 0.95rem;
    }

    .m3d-features {
        grid-template-columns: 1fr;
        padding: 20px 16px;
    }

    .m3d-steps {
        grid-template-columns: 1fr;
    }

    .m3d-testimonials {
        grid-template-columns: 1fr;
    }

    .m3d-related-links {
        grid-template-columns: 1fr;
    }
}