:root {
    --primary-color: #1a73e8;
    --primary-hover: #1557b0;
    --text-color: #202124;
    --text-secondary: #5f6368;
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #dadce0;
    --max-width: 1200px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

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

/* Typography */
h1,
h2,
h3 {
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
}

p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

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

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 5rem 0;
}

/* Header */
header {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo img {
    height: 32px;
    width: 32px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 8rem 0 4rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto 4rem;
}

.hero-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.hero-image img,
.hero-image video {
    width: 100%;
    height: auto;
    display: block;
}

/* Features Grid */
.features {
    background-color: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-image {
    width: 100%;
    border-radius: 8px;
    margin-top: 1.5rem;
    border: 1px solid var(--border-color);
}

/* How It Works */
.how-it-works {
    text-align: center;
}

.steps {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.step {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
}

.step-number {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

/* Footer */
footer {
    background-color: var(--text-color);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

footer p {
    color: #9aa0a6;
}

footer a {
    color: white;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {

    /* Typography */
    h1 {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    p {
        font-size: 1rem;
    }

    /* Layout */
    .container {
        padding: 0 1.5rem;
    }

    section {
        padding: 3rem 0;
    }

    /* Header */
    header .btn {
        display: none;
        /* Hide header button on mobile to save space */
    }

    /* Hero */
    .hero {
        padding: 3rem 0;
    }

    .hero-content {
        margin-bottom: 2rem;
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        /* Stack cards vertically */
        gap: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    /* How It Works */
    .steps {
        flex-direction: column;
        gap: 2.5rem;
        margin-top: 2rem;
    }

    .step {
        min-width: 100%;
    }
}

/* Privacy Policy */
.privacy-policy h1 {
    margin-bottom: 2rem;
    text-align: center;
}

.privacy-policy h2 {
    text-align: left;
    margin-top: 3rem;
    margin-bottom: 1rem;
    font-size: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.privacy-policy h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.privacy-policy ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.privacy-policy li {
    margin-bottom: 0.5rem;
}