:root {
    --bg-color: #000000;
    --card-bg: #0A0A0A;
    --card-border: #1A1A1A;
    --card-border-hover: #333333;
    --text-primary: #FFFFFF;
    --text-secondary: #888888;
    --accent-blue: #2563EB;
    --accent-blue-hover: #1D4ED8;
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: #000000;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 32px;
    height: 32px;
    background: var(--accent-blue);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #FFFFFF;
    font-size: 1.1rem;
}

.logo-text {
    font-weight: 600;
    letter-spacing: -0.3px;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

/* Buttons */
.btn-primary {
    background: var(--accent-blue);
    color: #FFFFFF !important;
    padding: 0.7rem 1.4rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s, transform 0.1s;
    border: 1px solid var(--accent-blue);
    display: inline-block;
    letter-spacing: -0.1px;
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    border-color: var(--accent-blue-hover);
}

.btn-secondary {
    background: #000000;
    color: var(--text-primary) !important;
    border: 1px solid var(--card-border);
    padding: 0.7rem 1.4rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: border-color 0.2s, background 0.2s;
    display: inline-block;
}

.btn-secondary:hover {
    border-color: var(--card-border-hover);
    background: #111111;
}

.large-btn {
    padding: 0.9rem 1.8rem;
    font-size: 1rem;
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    padding-top: 100px;
    background: radial-gradient(circle at 50% -20%, #111111 0%, #000000 50%);
}

.hero-content {
    max-width: 840px;
}

.badge-pill {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: #111111;
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1.5px;
    color: var(--text-primary);
}

.hero-subtext {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Features */
.features-section {
    padding: 8rem 5%;
    background: #000000;
    border-top: 1px solid var(--card-border);
}

.section-heading {
    text-align: center;
    margin-bottom: 5rem;
}

.section-heading h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.section-heading p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem;
    border-radius: 8px;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    border-color: var(--card-border-hover);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Install Section */
.install-section {
    padding: 8rem 5%;
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--card-border);
}

.install-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.install-text h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.install-text p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
}

.install-steps {
    list-style: none;
}

.install-steps li {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.install-steps code {
    background: #111111;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.step-num {
    width: 28px;
    height: 28px;
    background: #111111;
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
    font-size: 0.85rem;
}

/* Mock Browser */
.mock-browser {
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--card-border);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.browser-head {
    background: #000000;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--card-border);
}

.dot {
    width: 10px; height: 10px; border-radius: 50%;
}
.dot.red { background: #333333; }
.dot.yellow { background: #333333; }
.dot.green { background: #333333; }

.url-bar {
    background: #111111;
    padding: 6px 16px;
    border-radius: 4px;
    margin-left: 12px;
    flex-grow: 1;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
    text-align: center;
}

.browser-body {
    padding: 2rem;
}

.mock-ext-card {
    background: #000000;
    border: 1px solid var(--card-border);
    padding: 16px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.ext-icon {
    width: 40px; height: 40px;
    background: var(--accent-blue);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1.2rem; color: #FFFFFF;
}

.ext-info {
    flex-grow: 1;
    display: flex; flex-direction: column; gap: 4px;
}

.ext-info strong { font-size: 0.95rem; font-weight: 600; }
.ext-info span { font-size: 0.8rem; color: var(--text-secondary); }

.toggle-switch {
    width: 32px; height: 18px;
    background: var(--accent-blue);
    border-radius: 20px;
    position: relative;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 14px; height: 14px;
    background: white;
    border-radius: 50%;
    top: 2px; right: 2px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Footer */
.footer {
    border-top: 1px solid var(--card-border);
    padding: 4rem 5%;
    background: #000000;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex; align-items: center; gap: 10px;
    font-weight: 600; letter-spacing: -0.3px;
}

.logo-mark.small {
    width: 20px; height: 20px; font-size: 0.7rem; border-radius: 3px;
}

.footer-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

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

.footer-credits {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-right: 2rem;
}

.footer-credits strong {
    color: var(--text-primary);
    font-weight: 500;
}

.footer-socials {
    display: flex; gap: 1rem;
}

.social-link {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.social-link:hover {
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.8rem; letter-spacing: -1px; }
    .install-container { grid-template-columns: 1fr; gap: 3rem; }
    .footer-content { flex-direction: column; gap: 2rem; text-align: center; }
    .footer-links { flex-direction: column; gap: 1rem; }
    .footer-credits { margin-right: 0; margin-bottom: 1rem; }
    .nav-links { display: none; }
}