:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --primary: #111111;
    --secondary: #666666;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --bg: #f5f5f7;
    --surface: #ffffff;
    --border: #e1e1e1;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Radius */
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Nav */
    --nav-bg: rgba(255, 255, 255, 0.8);
    --nav-text: #1d1d1f;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--primary);
    line-height: 1.5;
    font-weight: 400;
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar-pill {
    width: 100%;
    height: 60px;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-weight: 600;
    font-size: 18px;
    color: var(--nav-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-links a {
    color: var(--secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 100px 0 60px;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 56px;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--primary);
    margin-bottom: 24px;
}

.hero h1 .highlight {
    color: var(--secondary);
}

.subtitle {
    font-size: 20px;
    line-height: 1.5;
    color: var(--secondary);
    max-width: 600px;
    margin: 0 auto 48px;
}

/* Upload Box */
.upload-section {
    padding: 20px 0 100px;
}

.upload-box {
    background: var(--surface);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    border: 1px dashed var(--border);
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
}

.upload-box:hover,
.drag-over {
    transform: translateY(-2px);
    border-color: var(--accent);
    background: #fafafa;
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: var(--accent);
    margin-bottom: 24px;
    opacity: 0.9;
}

.upload-text {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-hint {
    color: var(--secondary);
    font-size: 14px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background: #333;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: #fafafa;
    border-color: #ccc;
    transform: translateY(-1px);
}

.action-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 32px;
}

/* SEO Content */
.seo-content {
    background: white;
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.seo-content h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 40px;
    text-align: center;
}

.seo-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 40px auto 16px;
    max-width: 700px;
}

.seo-content p,
.seo-content ul {
    font-size: 16px;
    color: var(--secondary);
    margin-bottom: 24px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.seo-content ul {
    padding-left: 20px;
}

/* Footer */
.footer {
    background: var(--bg);
    padding: 80px 0 40px;
    font-size: 14px;
    color: var(--secondary);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-section h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-section li {
    margin-bottom: 12px;
}

.footer-section a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid #e5e5e5;
}

/* Progress */
.progress-bar {
    width: 200px;
    height: 4px;
    background: #eee;
    border-radius: 2px;
    margin: 24px auto 12px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    width: 30%;
    animation: progressLoad 1.5s infinite ease-in-out;
}

@keyframes progressLoad {
    0% {
        transform: translateX(-100%);
        width: 30%;
    }

    100% {
        transform: translateX(333%);
        width: 30%;
    }
}

.hidden {
    display: none;
}

.fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Success State */
.success-message {
    text-align: center;
    margin-bottom: 24px;
}

.success-icon {
    width: 40px;
    height: 40px;
    color: #10b981;
    /* Green */
    margin-bottom: 16px;
}

.success-message h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

/* Trust Badge */
.privacy-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #e6fffa;
    color: #047481;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    width: fit-content;
    margin: 0 auto 24px;
    border: 1px solid #b2f5ea;
}

.shield-icon {
    width: 16px;
    height: 16px;
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    color: var(--secondary);
    font-size: 13px;
    margin: 24px 0;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid var(--border);
}

.divider span {
    padding: 0 12px;
}

/* Demo Button */
.btn-demo {
    background: white;
    color: var(--primary);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    width: 100%;
    transition: all 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-demo:hover {
    background: #f7f7f7;
    border-color: #ccc;
    transform: translateY(-1px);
}

/* Social Proof */
.social-proof {
    text-align: center;
    margin-top: 32px;
    font-size: 14px;
    color: var(--secondary);
}

.stars {
    color: #fbbf24;
    font-size: 18px;
    letter-spacing: 2px;
    margin-top: 4px;
}

/* Ad Containers */
.ad-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f0f0f0;
    overflow: hidden;
    margin: 0 auto;
}

.ad-leaderboard {
    width: 100%;
    max-width: 728px;
    height: 90px;
    margin-top: 40px;
    border-radius: 8px;
}

.ad-sticky-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: white;
    border-top: 1px solid #ddd;
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (max-width: 768px) {
    .ad-sticky-footer {
        height: 50px;
    }

    .footer {
        padding-bottom: 80px;
        /* Spacer for ad */
    }

    .cookie-pill {
        bottom: 50px;
        /* Push above ad */
    }
}