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

:root {
    --color-bg: #ffffff;
    --color-surface: #f8f9fb;
    --color-text: #1a1a2e;
    --color-text-secondary: #5a5a72;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: #eff6ff;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================== Header ===================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 18px;
}

.logo__icon {
    color: var(--color-primary);
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav__link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav__link:hover {
    color: var(--color-text);
}

.lang-toggle {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font);
}

.lang-toggle:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* ===================== Buttons ===================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-family: var(--font);
    font-weight: 600;
    font-size: 15px;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn--outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}

.btn--outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.btn--large {
    padding: 16px 40px;
    font-size: 17px;
    border-radius: var(--radius-lg);
}

/* ===================== Hero ===================== */

.hero {
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero__title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.hero__subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 36px;
    max-width: 480px;
}

.hero__actions {
    display: flex;
    gap: 16px;
}

/* Phone mockup */

.phone-mockup {
    width: 300px;
    margin: 0 auto;
    background: var(--color-text);
    border-radius: 32px;
    padding: 12px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(0, 0, 0, 0.05);
}

.phone-mockup__screen {
    background: var(--color-bg);
    border-radius: 22px;
    padding: 16px;
    min-height: 380px;
}

.mock-header {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-bottom: 16px;
}

.mock-header__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-border);
}

.mock-calendar__header {
    font-weight: 600;
    font-size: 14px;
    text-align: center;
    margin-bottom: 12px;
    color: var(--color-text);
}

.mock-calendar__grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    font-size: 11px;
    text-align: center;
    margin-bottom: 20px;
}

.mock-calendar__grid span {
    padding: 4px 0;
    border-radius: 6px;
}

.mock-calendar__grid .dim {
    color: var(--color-border);
}

.mock-calendar__grid .active {
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.mock-calendar__grid .has-event {
    position: relative;
}

.mock-calendar__grid .has-event::after {
    content: '';
    position: absolute;
    bottom: 1px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-primary);
}

.mock-events {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mock-event {
    display: flex;
    gap: 12px;
    padding: 10px 12px;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-primary);
}

.mock-event__time {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    min-width: 36px;
}

.mock-event__title {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text);
}

.mock-event__meta {
    font-size: 11px;
    color: var(--color-text-secondary);
}

/* ===================== Section titles ===================== */

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 48px;
}

/* ===================== How it works ===================== */

.how-it-works {
    padding: 80px 0;
    background: var(--color-surface);
}

.how-it-works .section-title {
    margin-bottom: 48px;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.step {
    text-align: center;
}

.step__number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.step__title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.step__text {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===================== Features ===================== */

.features {
    padding: 80px 0;
}

.features .section-title {
    margin-bottom: 48px;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all 0.2s;
}

.feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.08);
    transform: translateY(-2px);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.feature-card__title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-card__text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===================== Pricing ===================== */

.pricing {
    padding: 80px 0;
    background: var(--color-surface);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
}

.pricing-card--highlighted {
    border-color: var(--color-primary);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.12);
}

.pricing-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-card__header {
    margin-bottom: 20px;
}

.pricing-card__name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-card__price {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.pricing-card__amount {
    font-size: 36px;
    font-weight: 700;
}

.pricing-card__period {
    font-size: 15px;
    color: var(--color-text-secondary);
}

.pricing-card__annual {
    font-size: 13px;
    color: var(--color-success);
    font-weight: 500;
    margin-top: 4px;
}

.pricing-card__description {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.pricing-card__features {
    list-style: none;
    flex: 1;
    margin-bottom: 28px;
}

.pricing-card__features li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-card__features li::before {
    content: '';
    width: 18px;
    height: 18px;
    min-width: 18px;
    border-radius: 50%;
    background: var(--color-primary-light);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%233b82f6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 10px;
}

.pricing-card .btn {
    width: 100%;
}

/* ===================== CTA ===================== */

.cta {
    padding: 80px 0;
}

.cta__inner {
    text-align: center;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: var(--radius-xl);
    padding: 64px 40px;
    color: #fff;
}

.cta__title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta__text {
    font-size: 18px;
    opacity: 0.85;
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta .btn--primary {
    background: #fff;
    color: var(--color-primary);
}

.cta .btn--primary:hover {
    background: #f0f7ff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

/* ===================== Footer ===================== */

.footer {
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copy {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.footer__link {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer__link:hover {
    color: var(--color-primary);
}

.footer__links {
    display: flex;
    gap: 20px;
}

/* ===================== Legal pages ===================== */

.legal {
    padding: 100px 0 60px;
}

.legal__inner {
    max-width: 720px;
    margin: 0 auto;
}

.legal__title {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.legal__updated {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
}

.legal__section {
    margin-bottom: 36px;
}

.legal__section h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.legal__section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 16px;
    margin-bottom: 8px;
    color: var(--color-text);
}

.legal__section p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

/* ===================== Responsive ===================== */

@media (max-width: 768px) {
    .hero {
        padding: 96px 0 60px;
    }

    .hero__inner {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero__title {
        font-size: 32px;
    }

    .hero__subtitle {
        font-size: 16px;
        max-width: 100%;
    }

    .hero__actions {
        justify-content: center;
    }

    .phone-mockup {
        width: 260px;
    }

    .steps {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .features__grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .section-title {
        font-size: 28px;
    }

    .section-subtitle {
        font-size: 16px;
    }

    .cta__inner {
        padding: 48px 24px;
    }

    .cta__title {
        font-size: 28px;
    }

    .footer__inner {
        flex-direction: column;
        gap: 12px;
    }

    .nav {
        gap: 16px;
    }

    .nav__link {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero__title {
        font-size: 28px;
    }

    .phone-mockup {
        width: 240px;
    }

    .btn--large {
        padding: 14px 32px;
        font-size: 16px;
    }
}