:root {
    --color-primary: #a78bfa;
    --color-primary-hover: #c4b5fd;
    --color-text: #FFFFFF;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    --color-white: #FFFFFF;
    --color-surface: rgba(255, 255, 255, 0.08);
    --color-surface-hover: rgba(255, 255, 255, 0.12);
    --color-border: rgba(255, 255, 255, 0.1);

    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: 1.6;
    background: #19191B;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header__container {
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.header__logo a {
    display: flex;
    align-items: center;
    transition: opacity 0.2s ease;
}

.header__logo a:hover {
    opacity: 0.8;
}

.logo {
    height: 36px;
    width: auto;
    display: block;
    margin-right: var(--spacing-sm);
}

.logo-text {
    display: inline-block;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    white-space: nowrap;
    margin-left: var(--spacing-sm);
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 16px;
}

.nav-link {
    color: var(--color-text);
    transition: color 0.2s;
    font-weight: 500;
}

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

.nav-divider {
    color: rgba(255, 255, 255, 0.3);
}

/* Main Hero */
.main {
    padding-top: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/hero-bg@2x.webp') center center / cover no-repeat;
    position: relative;
}

.main__container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.main__content {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.main__title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.22;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text);
    max-width: 540px;
}

.download-button {
    display: inline-block;
    transition: transform 0.2s;
}

.download-button:hover {
    transform: translateY(-2px);
}

.download-button__image {
    height: 60px;
    width: auto;
}

/* Phone Mockup */
.main__phone {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    display: flex;
}

.phone-image {
    width: 100%;
    max-width: 580px;
    height: auto;
    display: block;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.05);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-xl);
}

.footer__container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

.footer__company {
    font-size: 16px;
    color: var(--color-text-secondary);
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
}

.footer__contact {
    font-size: 16px;
    color: var(--color-text-secondary);
    font-weight: 500;
    line-height: 1.4;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    justify-content: center;
}

.footer__label {
    color: var(--color-text-secondary);
}

.footer__email {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer__email:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 1024px) {
    .main__container {
        flex-direction: column-reverse;
        text-align: center;
        gap: var(--spacing-2xl);
    }

    .main__content {
        align-items: center;
    }

    .main__title {
        font-size: 48px;
        text-align: center;
    }

    .phone-image {
        max-width: 450px;
    }
}

@media (max-width: 768px) {
    .header__container {
        padding: var(--spacing-sm) var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .header__logo {
        justify-content: center;
    }

    .logo-text {
        font-size: 16px;
    }

    .header__nav {
        font-size: 14px;
        gap: var(--spacing-sm);
        flex-wrap: wrap;
        justify-content: center;
    }

    .main {
        padding-top: 120px;
    }

    .main__container {
        padding: var(--spacing-lg);
    }

    .main__title {
        font-size: 36px;
    }

    .phone-image {
        max-width: 340px;
    }

    .footer__container {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .main__title {
        font-size: 28px;
    }

    .download-button__image {
        height: 48px;
    }

    .phone-image {
        max-width: 280px;
    }

    .footer {
        padding: var(--spacing-md);
    }

    .footer__company,
    .footer__contact {
        font-size: 14px;
    }
}