/* ====================================
   Apple-Inspired Design System
   ==================================== */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-bg-tertiary: #fbfbfd;
    --color-link: #0066cc;
    --color-link-hover: #0077ed;
    --color-border: rgba(0, 0, 0, 0.1);

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ====================================
   Navigation
   ==================================== */

.nav-global {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-content {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 21px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-list a {
    font-size: 12px;
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
    opacity: 0.8;
}

.nav-list a:hover {
    opacity: 1;
    color: var(--color-link);
}

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

.hero-section {
    background-color: var(--color-bg-primary);
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 96px;
    line-height: 1.05;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.hero-subtitle {
    font-size: 28px;
    line-height: 1.14286;
    font-weight: 400;
    letter-spacing: 0.007em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

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

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 12px 22px;
    font-size: 17px;
    line-height: 1.17648;
    font-weight: 400;
    letter-spacing: -0.022em;
    border-radius: 980px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--color-link-hover);
    transform: scale(1.02);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-link);
    border: 1px solid var(--color-link);
}

.btn-secondary:hover {
    background-color: var(--color-link);
    color: #ffffff;
}

/* ====================================
   Product Highlight Section
   ==================================== */

.product-highlight {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-xxl) var(--spacing-md);
    text-align: center;
}

.section-content {
    max-width: 980px;
    margin: 0 auto;
}

.section-eyebrow {
    font-size: 21px;
    line-height: 1.19048;
    font-weight: 600;
    letter-spacing: 0.011em;
    color: var(--color-link);
    margin-bottom: var(--spacing-sm);
}

.section-headline {
    font-size: 64px;
    line-height: 1.0625;
    font-weight: 700;
    letter-spacing: -0.009em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.section-subhead {
    font-size: 24px;
    line-height: 1.33341;
    font-weight: 400;
    letter-spacing: 0.009em;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

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

.features-section {
    padding: var(--spacing-xl) var(--spacing-md);
    background-color: var(--color-bg-primary);
}

.features-container {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.feature-large,
.feature-small {
    border-radius: 18px;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 420px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-large {
    min-height: 500px;
}

.feature-small {
    min-height: 240px;
}

/* Feature Gradients */
.feature-security {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.feature-streaming {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.feature-media {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.feature-privacy {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    color: white;
}

.feature-large:hover,
.feature-small:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Feature Icons */
.feature-icon-large,
.feature-icon-small {
    margin-bottom: auto;
}

.feature-icon-large svg {
    width: 80px;
    height: 80px;
    color: rgba(255, 255, 255, 0.9);
}

.feature-icon-small svg {
    width: 56px;
    height: 56px;
    color: rgba(255, 255, 255, 0.9);
}

.feature-content {
    width: 100%;
}

.feature-title {
    font-size: 40px;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.005em;
    color: #ffffff;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: 0.011em;
    color: rgba(255, 255, 255, 0.9);
}

.feature-small-title {
    font-size: 28px;
    line-height: 1.14286;
    font-weight: 600;
    letter-spacing: 0.007em;
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.feature-small-description {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: rgba(255, 255, 255, 0.9);
}

/* ====================================
   About Section
   ==================================== */

.about-section {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-xxl) var(--spacing-md);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-title {
    font-size: 56px;
    line-height: 1.07143;
    font-weight: 700;
    letter-spacing: -0.005em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.about-description {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: 0.011em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.cta-section {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-xxl) var(--spacing-md);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 48px;
    line-height: 1.08349;
    font-weight: 700;
    letter-spacing: -0.003em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: 0.011em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

.footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg) var(--spacing-md);
}

.footer-content {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.footer-title {
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: 8px;
}

.footer-list a {
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-list a:hover {
    color: var(--color-text-primary);
}

.footer-legal {
    max-width: 980px;
    margin: 0 auto;
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-legal p {
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.footer-small {
    font-size: 11px;
    opacity: 0.7;
}

/* ====================================
   Privacy Policy Page
   ==================================== */

.privacy-content {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.privacy-content h1 {
    font-size: 48px;
    line-height: 1.08349;
    font-weight: 700;
    letter-spacing: -0.003em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.privacy-content .effective-date {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.privacy-content h2 {
    font-size: 32px;
    line-height: 1.125;
    font-weight: 700;
    letter-spacing: 0.004em;
    color: var(--color-text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.privacy-content p {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.privacy-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.privacy-content li {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.privacy-content a {
    color: var(--color-link);
    text-decoration: none;
}

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

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

@media (max-width: 1068px) {
    .hero-title {
        font-size: 72px;
    }

    .section-headline {
        font-size: 48px;
    }

    .about-title {
        font-size: 40px;
    }
}

@media (max-width: 734px) {
    :root {
        --spacing-xl: 60px;
        --spacing-xxl: 80px;
    }

    .nav-content {
        padding: 0 16px;
    }

    .nav-list {
        gap: 16px;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-subtitle {
        font-size: 21px;
    }

    .section-eyebrow {
        font-size: 17px;
    }

    .section-headline {
        font-size: 32px;
    }

    .section-subhead {
        font-size: 19px;
    }

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

    .feature-large {
        min-height: 400px;
    }

    .feature-small {
        min-height: 320px;
    }

    .feature-icon-large svg {
        width: 64px;
        height: 64px;
    }

    .feature-icon-small svg {
        width: 48px;
        height: 48px;
    }

    .feature-title {
        font-size: 32px;
    }

    .feature-description {
        font-size: 17px;
    }

    .feature-small-title {
        font-size: 24px;
    }

    .feature-small-description {
        font-size: 15px;
    }

    .about-title {
        font-size: 32px;
    }

    .about-description {
        font-size: 17px;
    }

    .cta-title {
        font-size: 32px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .nav-list {
        gap: 12px;
    }

    .nav-list a {
        font-size: 11px;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 19px;
    }

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

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}