/* Import Modern Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Global Styles for Lumen Guard */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    background-attachment: fixed;
    color: #f8fafc;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(56, 189, 248, 0.2);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    gap: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #38bdf8;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.logo img {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: inline-block;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

nav a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

nav a:hover {
    color: #38bdf8;
}

a:focus-visible {
    outline: 3px solid #facc15;
    outline-offset: 3px;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.hero-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.hero-title-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.15);
    flex-shrink: 0;
}

.hero .tagline {
    font-size: 1.5rem;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 2rem;
    letter-spacing: -0.01em;
}

.hero .description {
    font-size: 1.1rem;
    font-weight: 400;
    color: #94a3b8;
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

.hero-note {
    max-width: 650px;
    margin: 1.25rem auto 0;
    color: #64748b;
    font-size: 0.86rem;
}

.eyebrow {
    color: #7dd3fc;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 0.75rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
    color: #0f172a;
    box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
    background: rgba(56, 189, 248, 0.1);
    color: #38bdf8;
    border: 1px solid #38bdf8;
}

.btn-secondary:hover {
    background: rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

/* Features Section */
.features {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 4rem 2rem;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #38bdf8;
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.2);
    background: rgba(30, 41, 59, 0.95);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
    color: #38bdf8;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    filter: drop-shadow(0 4px 12px rgba(56, 189, 248, 0.4));
}

.feature-card h3 {
    color: #e2e8f0;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: #94a3b8;
    line-height: 1.6;
    font-weight: 400;
}

/* Premium Features */
.premium-section {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(250, 204, 21, 0.1) 0%, rgba(234, 179, 8, 0.05) 100%);
    border-radius: 16px;
    border: 1px solid rgba(250, 204, 21, 0.3);
}

.premium-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #facc15;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.premium-badge {
    text-align: center;
    color: #cbd5e1;
    margin-bottom: 3rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.premium-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.premium-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(30, 41, 59, 0.6);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid rgba(250, 204, 21, 0.2);
    font-weight: 400;
}

.premium-icon {
    width: 24px;
    height: 24px;
    color: #facc15;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.premium-icon svg {
    width: 100%;
    height: 100%;
}

.premium-item:hover .premium-icon {
    transform: scale(1.1);
    filter: drop-shadow(0 2px 8px rgba(250, 204, 21, 0.4));
}

/* Screenshots */
.screenshots {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 4rem 2rem;
    text-align: center;
}

.screenshots h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.screenshot-card {
    margin: 0;
    overflow: hidden;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(56, 189, 248, 0.24);
    border-radius: 16px;
    text-align: left;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.screenshot-card:hover {
    transform: translateY(-4px);
    border-color: #38bdf8;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.55);
}

.screenshot-card img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 768 / 1376;
    object-fit: cover;
    object-position: top;
    background: #0f172a;
}

.screenshot-card figcaption {
    padding: 1.15rem 1.2rem 1.3rem;
}

.screenshot-card h3 {
    color: #e2e8f0;
    font-size: 1.05rem;
    margin-bottom: 0.2rem;
}

.screenshot-card p {
    color: #94a3b8;
    font-size: 0.9rem;
}

.availability-details {
    margin-top: 1.4rem !important;
    margin-bottom: 0 !important;
    color: #64748b !important;
    font-size: 0.9rem !important;
}

/* Download Section */
.download-section {
    max-width: 800px;
    margin: 4rem auto;
    padding: 4rem 2rem;
    text-align: center;
    background: rgba(30, 41, 59, 0.6);
    border-radius: 16px;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.download-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.download-section p {
    color: #94a3b8;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    font-weight: 400;
}

.badge-placeholder {
    display: inline-block;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid #38bdf8;
    padding: 1rem 2rem;
    border-radius: 8px;
    color: #38bdf8;
    font-weight: 600;
}

/* Footer */
footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(56, 189, 248, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: #38bdf8;
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

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

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
    font-weight: 400;
}

.footer-section a:hover {
    color: #38bdf8;
}

.copyright {
    color: #64748b;
    font-size: 0.9rem;
    font-weight: 400;
    padding-top: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .tagline {
        font-size: 1.2rem;
    }

    nav ul {
        gap: 1rem;
        font-size: 0.9rem;
    }

    nav {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.2rem;
        white-space: nowrap;
    }

    .features h2,
    .premium-section h2,
    .screenshots h2,
    .download-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 560px) {
    nav {
        flex-direction: column;
        align-items: center;
        padding: 0 1rem;
        gap: 0.65rem;
    }

    nav ul {
        justify-content: center;
        gap: 0.75rem 1rem;
    }

    .hero-title {
        gap: 0.5rem;
    }

    .hero h1 {
        font-size: 2.25rem;
        line-height: 1.1;
    }

    .hero {
        padding: 4rem 1.25rem;
    }

    .hero-title-icon {
        width: 48px;
        height: 48px;
    }

    .cta-buttons {
        display: grid;
        width: 100%;
        max-width: 340px;
        margin: 0 auto;
    }

    .btn {
        justify-content: center;
        padding: 0.95rem 1.25rem;
    }

    .features,
    .screenshots {
        margin: 2.5rem auto;
        padding: 2.5rem 1.25rem;
    }

    .premium-section,
    .download-section {
        margin: 2.5rem 1rem;
        padding: 2.5rem 1.25rem;
    }

    .features-grid,
    .premium-features,
    .screenshot-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feature-card,
    .premium-item {
        padding: 1.25rem;
    }

    footer {
        padding: 2.5rem 1.25rem;
    }
}