/* --- Reset --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* --- Variables --- */
:root {
    --color-primary: #2563eb;
    --color-primary-light: #dbeafe;
    --color-text: #1a1a2e;
    --color-text-secondary: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-hero-gradient-from: #f0f4ff;
    --color-hero-gradient-to: #e8f0fe;
    --color-telegram: #0088cc;
    --color-max: #5b5ea6;
    --color-danger-bg: #fef2f2;
    --color-danger-border: #fecaca;
    --color-danger-text: #dc2626;
    --color-footer-bg: #1a1a2e;
    --color-footer-text: #94a3b8;
    --color-border: #e2e8f0;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --max-width: 900px;
    --section-padding: 48px 24px;
    --border-radius: 12px;
    --border-radius-sm: 10px;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 24px;
}

/* --- Hero --- */
.hero {
    background: linear-gradient(135deg, var(--color-hero-gradient-from), var(--color-hero-gradient-to));
    text-align: center;
    padding: 56px 24px 48px;
}

.hero__eyebrow {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 8px;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.hero__description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 440px;
    margin: 0 auto 32px;
}

.hero__qr-codes {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.qr-block {
    text-align: center;
}

.qr-block__image {
    width: 160px;
    height: 160px;
    background: #fff;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    border: 2px solid var(--color-border);
}

.qr-block--telegram .qr-block__image {
    border-color: var(--color-telegram);
}

.qr-block--max .qr-block__image {
    border-color: var(--color-max);
}

.qr-block__image img {
    width: 140px;
    height: 140px;
}

.qr-block__label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
}

.qr-block--telegram .qr-block__label {
    color: var(--color-telegram);
}

.qr-block--max .qr-block__label {
    color: var(--color-max);
}

.qr-block__hint {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

/* --- Problem --- */
.problem {
    border-bottom: 1px solid var(--color-border);
}

.problem__cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 520px;
    margin: 0 auto;
}

.problem__card {
    background: var(--color-danger-bg);
    border: 1px solid var(--color-danger-border);
    border-radius: var(--border-radius-sm);
    padding: 16px;
}

.problem__icon {
    font-size: 1rem;
}

.problem__label {
    font-size: 0.85rem;
    color: var(--color-danger-text);
    margin-left: 4px;
}

.problem__text {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* --- Steps --- */
.steps {
    border-bottom: 1px solid var(--color-border);
}

.steps__list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 520px;
    margin: 0 auto;
    text-align: center;
}

.steps__item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.steps__number {
    width: 48px;
    height: 48px;
    background: var(--color-primary-light);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.steps__label {
    font-size: 0.9rem;
}

.steps__text {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* --- Features --- */
.features {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.features__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto;
}

.features__card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 16px;
}

.features__icon {
    font-size: 1rem;
}

.features__label {
    font-size: 0.9rem;
    margin-left: 4px;
}

.features__text {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

/* --- Screenshots --- */
.screenshots {
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}

.screenshots__scroll {
    display: flex;
    gap: 16px;
    justify-content: center;
    overflow-x: auto;
    padding: 8px 0 16px;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
}

.screenshots__phone {
    flex-shrink: 0;
    scroll-snap-align: center;
}

.screenshots__phone img {
    display: block;
    width: 180px;
    height: auto;
}

/* --- Pricing --- */
.pricing {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.pricing__cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 560px;
    margin: 0 auto;
}

.pricing__card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    position: relative;
}

.pricing__card--popular {
    border: 2px solid var(--color-primary);
}

.pricing__badge {
    position: absolute;
    top: -11px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 12px;
    border-radius: 10px;
    text-transform: uppercase;
}

.pricing__name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.pricing__price {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-primary);
    margin: 8px 0 16px;
}

.pricing__period {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-secondary);
}

.pricing__features {
    list-style: none;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* --- CTA --- */
.cta {
    background: linear-gradient(135deg, var(--color-hero-gradient-from), var(--color-hero-gradient-to));
    text-align: center;
    padding: 56px 24px;
}

.cta__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.cta__subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 28px;
}

.cta__qr-codes {
    display: flex;
    gap: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

.qr-block__image--sm {
    width: 120px;
    height: 120px;
}

.qr-block__image--sm img {
    width: 100px;
    height: 100px;
}

/* --- Footer --- */
.footer {
    background: var(--color-footer-bg);
    color: var(--color-footer-text);
    text-align: center;
    padding: 20px 24px;
    font-size: 0.8rem;
}

/* --- Media queries --- */
@media (min-width: 768px) {
    :root {
        --section-padding: 64px 32px;
    }
    .section-title {
        font-size: 1.75rem;
    }
    .hero {
        padding: 80px 32px 64px;
    }
    .hero__title {
        font-size: 3rem;
    }
    .hero__qr-codes {
        flex-direction: row;
        justify-content: center;
        gap: 40px;
    }
    .problem__cards {
        flex-direction: row;
    }
    .problem__card {
        flex: 1;
    }
    .steps__list {
        flex-direction: row;
    }
    .steps__item {
        flex: 1;
    }
    .features__grid {
        grid-template-columns: 1fr 1fr;
    }
    .screenshots__phone img {
        width: 220px;
    }
    .pricing__cards {
        flex-direction: row;
    }
    .pricing__card {
        flex: 1;
    }
}