/* SOND Landing Page — Clean Minimalist Design (2026-02) */

/* === Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #007AFF;
    --primary-blue-dark: #0051D5;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --background: #ffffff;
    --background-secondary: #f5f5f7;
    --border-color: #d2d2d7;
    --shadow-light: rgba(0, 0, 0, 0.08);
    --shadow-medium: rgba(0, 0, 0, 0.12);
    --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-hero: 48px;
    --font-size-h3: 32px;
    --font-size-h4: 20px;
    --font-size-body: 17px;
    --font-size-small: 14px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 100px;
    --max-width: 980px;
    --border-radius: 12px;
    --border-radius-lg: 18px;
}

body {
    font-family: var(--font-system);
    font-size: var(--font-size-body);
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--background);
    -webkit-font-smoothing: antialiased;
}

/* === Container === */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === Header === */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
}

.logo h1 {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

nav {
    display: flex;
    gap: var(--spacing-md);
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.2s;
    padding: var(--spacing-xs) 0;
}

nav a:hover {
    color: var(--primary-blue);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* === Language Switcher === */
.lang-switcher {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.lang-switcher a {
    text-decoration: none;
    font-size: 24px;
    opacity: 0.5;
    transition: opacity 0.3s, transform 0.3s;
    display: inline-block;
}

.lang-switcher a:hover {
    opacity: 1;
    transform: scale(1.1);
}

.lang-switcher a.lang-active {
    opacity: 1;
}

/* === Hero Section === */
.hero {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.hero-note {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
}

/* === Buttons === */
.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 14px 28px;
    border-radius: 980px;
    font-size: var(--font-size-body);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px var(--shadow-medium);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* === Section Utilities === */
.section-intro {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

/* === AI Insights Section === */
.insights-section {
    padding: var(--spacing-xl) 0;
    background: var(--background-secondary);
    margin: 0 calc(-1 * var(--spacing-md));
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.insights-section h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
}

.insight-card {
    background: var(--background);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border-left: 3px solid var(--primary-blue);
    transition: all 0.3s ease;
}

.insight-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow-medium);
}

.insight-quote {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.insight-context {
    font-size: 13px;
    color: var(--primary-blue);
    font-weight: 600;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.insights-tagline {
    text-align: center;
    font-size: 20px;
    color: var(--text-primary);
    font-weight: 500;
    max-width: 500px;
    margin: 0 auto;
}

.insights-tagline em {
    color: var(--primary-blue);
    font-style: normal;
    font-weight: 700;
}

/* === Screenshots Gallery === */
.screenshots-section {
    padding: var(--spacing-lg) 0 var(--spacing-xl);
    overflow: hidden;
}

.screenshots-section h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.5px;
}

.screenshots-container {
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 20px 0;
}

.screenshots-container::-webkit-scrollbar {
    display: none;
}

.screenshots-track {
    display: flex;
    gap: 24px;
    padding: 0 var(--spacing-md);
    width: max-content;
}

.screenshot-item {
    flex-shrink: 0;
    text-align: center;
    transition: transform 0.3s ease;
}

.screenshot-item:hover {
    transform: translateY(-8px);
}

.screenshot-item img {
    width: 260px;
    height: auto;
    border-radius: 28px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.screenshot-item p {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--text-secondary);
}

/* === Features Section === */
.features-section {
    padding: var(--spacing-xl) 0;
}

.features-section h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.5px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.feature-card {
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
}

.feature-card:hover {
    border-color: var(--primary-blue);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-xs);
}

.feature-card h4 {
    font-size: var(--font-size-h4);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 15px;
    margin: 0;
}

/* === Testimonials Section === */
.testimonials-section {
    padding: var(--spacing-xl) 0;
    background: var(--background-secondary);
    margin: 0 calc(-1 * var(--spacing-md));
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.testimonials-section h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.5px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--background);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    position: relative;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--shadow-medium);
}

.testimonial-card::before {
    content: '\201C';
    position: absolute;
    top: 12px;
    left: 20px;
    font-size: 56px;
    font-weight: 700;
    color: var(--primary-blue);
    opacity: 0.15;
    line-height: 1;
}

.testimonial-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.testimonial-author {
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--primary-blue);
}

/* === Pricing Section === */
.pricing {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.pricing h3 {
    font-size: var(--font-size-h3);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.pricing-block {
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    background: var(--background-secondary);
    padding: 32px;
    border-radius: var(--border-radius-lg);
}

.pricing-main {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.pricing-main strong {
    color: var(--primary-blue);
}

.pricing-credits {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.russia-payment {
    text-align: center;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
}

.russia-payment a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
}

.russia-payment a:hover {
    text-decoration: underline;
}

.privacy-note {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.privacy-note a {
    color: var(--primary-blue);
    text-decoration: none;
}

.privacy-note a:hover {
    text-decoration: underline;
}

/* === CTA Footer === */
.cta-footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.cta-footer h3 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.cta-footer p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.cta-support {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
}

.cta-support a {
    color: var(--primary-blue);
    text-decoration: none;
}

.cta-support a:hover {
    text-decoration: underline;
}

/* === Footer === */
footer {
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-small);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary-blue);
}

.copyright {
    color: var(--text-secondary);
    font-size: var(--font-size-small);
}

/* === Legal/Support Pages === */
.legal-content,
.support-content {
    padding: var(--spacing-lg) 0;
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2,
.support-content h2 {
    font-size: 40px;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.last-updated,
.intro {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.legal-content section,
.support-content section {
    margin-bottom: var(--spacing-lg);
}

.legal-content h3,
.support-content h3 {
    font-size: var(--font-size-h3);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.legal-content h4,
.support-content h4 {
    font-size: var(--font-size-h4);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.legal-content p,
.support-content p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.legal-content ul,
.legal-content ol,
.support-content ul,
.support-content ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-content li,
.support-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

.legal-content a,
.support-content a {
    color: var(--primary-blue);
    text-decoration: none;
}

.legal-content a:hover,
.support-content a:hover {
    text-decoration: underline;
}

.no-collect-list {
    list-style: none;
    margin-left: 0;
}

.service-card {
    background: var(--background-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.service-card h4 {
    margin-top: 0;
}

.note {
    background: #fff8e1;
    padding: var(--spacing-sm);
    border-left: 4px solid #ffc107;
    border-radius: var(--border-radius);
    margin: var(--spacing-sm) 0;
}

.final-note {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--background-secondary);
    border-radius: var(--border-radius-lg);
    margin-top: var(--spacing-lg);
}

.faq-item {
    background: var(--background-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.faq-item h4 {
    margin-top: 0;
}

.troubleshooting {
    margin-top: var(--spacing-xl);
}

.system-requirements {
    background: var(--background-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin-top: var(--spacing-xl);
}

.contact {
    margin-top: var(--spacing-xl);
}

.contact-method {
    background: var(--background-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.update-item {
    background: var(--background-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.resources {
    margin-top: var(--spacing-lg);
}

/* === Animations === */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero,
.insights-section,
.screenshots-section,
.features-section,
.testimonials-section,
.pricing,
.cta-footer {
    animation: fadeIn 0.6s ease-out;
}

/* === Responsive: Tablet === */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .insight-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .screenshot-item img {
        width: 200px;
    }

    .screenshots-track {
        gap: 16px;
    }

    nav {
        gap: var(--spacing-sm);
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .legal-content h2,
    .support-content h2 {
        font-size: 32px;
    }

    .legal-content h3,
    .support-content h3 {
        font-size: 24px;
    }
}

/* === Responsive: Mobile === */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 32px;
        --spacing-xl: 56px;
    }

    .hero-title {
        font-size: 30px;
    }

    .logo h1 {
        font-size: 24px;
    }

    header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .pricing-block {
        padding: 24px 20px;
    }
}