:root {
    /* Colors from app icon */
    --color-primary: #00B4FF;
    --color-primary-dark: #3B82F6;
    --color-accent-purple: #7C3AED;
    --color-accent-cyan: #06B6D4;

    /* Neutral palette - macOS Tahoe style */
    --color-bg: #FAFBFC;
    --color-surface: #FFFFFF;
    --color-border: rgba(0, 0, 0, 0.08);
    --color-text: #1D1D1F;
    --color-text-secondary: #6E6E73;
    --color-text-tertiary: #86868B;

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

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 120px;

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 251, 252, 0.72);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
}

.nav-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.nav-title {
    font-weight: 600;
    font-size: 16px;
}

.nav-cta {
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

/* Hero */
.hero {
    padding-top: 160px;
    padding-bottom: var(--section-padding);
    text-align: center;
    background: linear-gradient(180deg,
            rgba(0, 180, 255, 0.06) 0%,
            transparent 50%);
}

.hero-icon {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
    box-shadow: var(--shadow-lg);
}

.hero-headline {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subheadline {
    font-size: clamp(18px, 2.5vw, 22px);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-demo {
    margin: 40px 0;
}

/* CTA Buttons */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    padding: 16px 28px;
    border-radius: 50px;
    font-size: 17px;
    font-weight: 600;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 180, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 30px rgba(0, 180, 255, 0.4);
}

.cta-button.large {
    padding: 18px 36px;
    font-size: 19px;
}

.cta-icon {
    font-size: 20px;
}

/* Section Titles */
.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 560px;
    margin: 0 auto 48px;
}

/* Sections */
section {
    padding: var(--section-padding) 0;
}

section:nth-child(even) {
    background: var(--color-surface);
}

/* Problem Section */
.problem {
    background: var(--color-surface);
}

.before-after {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 64px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.before-after-block {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    position: relative;
}

.before-after-block.before {
    background: var(--color-bg);
}

.before-after-block.after {
    background: linear-gradient(135deg,
            rgba(0, 180, 255, 0.06) 0%,
            rgba(123, 58, 237, 0.04) 100%);
    border-color: rgba(0, 180, 255, 0.2);
    box-shadow: 0 0 32px rgba(0, 180, 255, 0.2), 0 0 16px rgba(123, 58, 237, 0.15);
}

.before-after-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 16px;
}

.before .before-after-label {
    background: rgba(0, 0, 0, 0.06);
    color: var(--color-text-tertiary);
}

.after .before-after-label {
    background: rgba(0, 180, 255, 0.12);
    color: var(--color-primary);
}

.before-after-block p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 17px;
}

.before-after-block.after p {
    color: var(--color-text);
}

@media (max-width: 640px) {
    .before-after {
        grid-template-columns: 1fr;
    }
}

.problem-visual {
    max-width: 800px;
    margin: 0 auto;
}

.pointer-settings-image {
    max-width: 500px;
    /* Reduced from 800px based on "Smaller" markup */
}

/* Solution Section */
.power-users-subtitle {
    font-size: 14px;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
    margin-bottom: 24px;
    margin-top: -8px;
}

.feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 96px;
}

.feature.reverse {
    direction: rtl;
}

.feature.reverse>* {
    direction: ltr;
}

.feature-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.feature-content p {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.feature-bullets {
    list-style: none;
}

.feature-bullets li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    color: var(--color-text);
}

.feature-bullets li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}



/* Specs */
.specs {
    background: var(--color-bg);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 24px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.spec-label {
    font-size: 13px;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.spec-value {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text);
}

/* CTA Final */
.cta-final {
    background: linear-gradient(135deg,
            var(--color-primary) 0%,
            var(--color-primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 18px;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto 40px;
}

.cta-final .cta-button {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cta-final .cta-button:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.cta-note {
    margin-top: 24px;
    font-size: 14px;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--color-text);
    color: white;
    padding: 48px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.footer-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* Hero Video */
.hero-video,
.hero-gif-fallback {
    width: 100%;
    max-width: 900px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: block;
    margin: 0 auto;
}

/* Feature Images */
.feature-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Settings Image */
.settings-image {
    width: 100%;
    max-width: 700px;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Problem Image */
.problem-image {
    width: 100%;
    max-width: 600px;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.problem-caption {
    text-align: center;
    margin-top: 16px;
    font-size: 15px;
    color: var(--color-text-tertiary);
    font-style: italic;
}

/* Privacy Section */
.privacy {
    background: var(--color-bg);
}

.privacy-content {
    max-width: 600px;
    margin: 32px auto 0;
    text-align: center;
}

.privacy-content p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.privacy-content strong {
    color: var(--color-text);
}

/* Responsive */
@media (max-width: 900px) {
    .feature {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .feature.reverse {
        direction: ltr;
    }

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

@media (max-width: 600px) {
    :root {
        --section-padding: 80px;
    }

    .nav-content {
        padding: 12px 16px;
    }

    .nav-title {
        display: none;
    }

    .use-case-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}