:root {
    --swiftkey-blue: #0ea5e9;
    --swiftkey-dark: #0284c7;
    --swiftkey-accent: #38bdf8;
    --code-bg: #0f172a;
    --code-text: #e2e8f0;
    --bg-dark: #020617;
    --bg-darker: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-subtle: #1e293b;
    --terminal-green: #10b981;
    --glow-blue: rgba(14, 165, 233, 0.15);
    --glow-green: rgba(16, 185, 129, 0.15);
}

body {
    background: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', 'SF Mono', 'Monaco', monospace;
}

/* Header capsule styling */
header {
    background: transparent;
    border-bottom: none;
}

nav {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 4px;
    padding: 12px 24px;
    margin: 20px 20px 20px auto;
    width: fit-content;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.08);
}

.nav-links {
    gap: 24px;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--swiftkey-accent);
    text-shadow: 0 0 10px rgba(14, 165, 233, 0.5);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--swiftkey-accent);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero */
.hero {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 50% 60% at 50% 30%, rgba(14, 165, 233, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.app-logo {
    width: 100px;
    height: 100px;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 30px rgba(14, 165, 233, 0.3));
    transition: all 0.3s ease;
}

.app-logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 40px rgba(14, 165, 233, 0.5));
}

.hero h1 {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 800;
    font-size: clamp(3rem, 6vw, 4.5rem);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--swiftkey-blue) 0%, var(--swiftkey-accent) 50%, var(--terminal-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.02em;
}

.tagline::before {
    content: '> ';
    color: var(--terminal-green);
    font-weight: 600;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.6;
    font-family: 'JetBrains Mono', monospace;
}

/* Screenshot Section */
.screenshot-section {
    padding: 0 var(--spacing-md) var(--spacing-xl);
    text-align: center;
}

.demo-gif {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    border-radius: 2px;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 0 60px rgba(14, 165, 233, 0.12), 0 0 120px rgba(14, 165, 233, 0.04);
}

/* Button overrides for hacker aesthetic */
.hero-buttons .btn-primary {
    background: transparent;
    color: var(--terminal-green);
    padding: 12px 32px;
    border: 1px solid var(--terminal-green);
    border-radius: 2px;
    font-weight: 500;
    font-size: 0.875rem;
    font-family: 'JetBrains Mono', monospace;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.hero-buttons .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--terminal-green);
    transition: left 0.3s ease;
    z-index: -1;
}

.hero-buttons .btn-primary:hover {
    color: var(--bg-dark);
    box-shadow: 0 0 24px rgba(16, 185, 129, 0.3);
    transform: translateY(0);
}

.hero-buttons .btn-primary:hover::before {
    left: 0;
}

.hero-buttons .btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    padding: 12px 32px;
    border: 1px solid var(--border-subtle);
    border-radius: 2px;
    font-weight: 400;
    font-size: 0.875rem;
    font-family: 'JetBrains Mono', monospace;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-buttons .btn-secondary:hover {
    color: var(--swiftkey-accent);
    border-color: var(--swiftkey-accent);
    box-shadow: 0 0 15px rgba(14, 165, 233, 0.15);
    transform: translateY(0);
}

/* Interface Styles */
.interface-styles {
    background: var(--bg-darker);
    text-align: center;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.interface-styles::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 40% 50% at 80% 20%, rgba(16, 185, 129, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

.style-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.style-card {
    background: var(--code-bg);
    padding: var(--spacing-lg);
    border-radius: 2px;
    border: 1px solid var(--border-subtle);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.style-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--terminal-green) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.style-card:hover {
    border-color: rgba(16, 185, 129, 0.4);
    box-shadow: 0 0 24px rgba(16, 185, 129, 0.08);
}

.style-card:hover::before {
    transform: translateX(0);
}

.style-preview {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 2px;
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-subtle);
    opacity: 0.75;
    transition: opacity 0.2s ease;
}

.style-card:hover .style-preview {
    opacity: 1;
}

.style-icon {
    margin-bottom: var(--spacing-sm);
    color: var(--swiftkey-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.style-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    font-family: 'JetBrains Mono', monospace;
    color: var(--terminal-green);
    letter-spacing: 0.02em;
}

.style-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: 'JetBrains Mono', monospace;
}

/* YAML Config Section */
.yaml-config {
    text-align: center;
    position: relative;
}

.code-example {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-darker);
    border: 1px solid var(--border-subtle);
    border-radius: 0;
    padding: 0;
    overflow-x: auto;
    text-align: left;
    position: relative;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.code-example::before {
    content: '• • •';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 12px 20px;
    background: var(--border-subtle);
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 0.5em;
    border-bottom: 1px solid var(--border-subtle);
}

.code-example pre {
    padding: calc(var(--spacing-lg) + 40px) var(--spacing-lg) var(--spacing-lg);
    margin: 0;
}

.code-example code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--code-text);
}

.comment {
    color: #64748b;
    font-style: italic;
}

/* Features */
.features {
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(14, 165, 233, 0.04) 0%, transparent 70%),
        radial-gradient(ellipse 40% 50% at 80% 20%, rgba(16, 185, 129, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.feature {
    background: var(--bg-darker);
    padding: var(--spacing-lg);
    border-radius: 2px;
    border: 1px solid var(--border-subtle);
    text-align: center;
    transition: all 0.25s ease;
    position: relative;
}

.feature::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--terminal-green), var(--swiftkey-accent));
    transition: width 0.3s ease;
}

.feature:hover {
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 4px 24px rgba(14, 165, 233, 0.08);
    transform: translateY(-2px);
}

.feature:hover::after {
    width: 100%;
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 2px;
    color: var(--terminal-green);
    background: rgba(16, 185, 129, 0.06);
    transition: all 0.25s ease;
}

.feature:hover .feature-icon {
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.1);
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.1);
}

.feature h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.825rem;
    font-family: 'JetBrains Mono', monospace;
    line-height: 1.6;
}

/* Action Types */
.action-types {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.action-types::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(14, 165, 233, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.action-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.action {
    background: var(--bg-darker);
    padding: var(--spacing-md);
    border-radius: 0;
    border: 1px solid var(--border-subtle);
    border-left: 3px solid var(--terminal-green);
    transition: all 0.2s ease;
    width: calc((100% - 2 * var(--spacing-md)) / 3);
    box-sizing: border-box;
}

.action:hover {
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.08);
    transform: translateX(4px);
    border-left-color: var(--swiftkey-accent);
}

.action code {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    color: var(--terminal-green);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.02em;
}

.action:hover code {
    color: var(--swiftkey-accent);
}

.action p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Installation */
.installation {
    background: var(--bg-darker);
    text-align: center;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.install-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.install-step {
    background: var(--code-bg);
    padding: var(--spacing-lg);
    border-radius: 2px;
    border: 1px solid var(--border-subtle);
    transition: all 0.2s ease;
}

.install-step:hover {
    border-color: var(--terminal-green);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.08);
}

.step-number {
    width: 50px;
    height: 50px;
    background: transparent;
    color: var(--terminal-green);
    border: 2px solid var(--terminal-green);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    margin: 0 auto var(--spacing-sm);
    position: relative;
    transition: all 0.2s ease;
}

.install-step:hover .step-number {
    background: rgba(16, 185, 129, 0.1);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.15);
}


.install-step h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.install-step code {
    display: block;
    background: var(--bg-dark);
    color: var(--terminal-green);
    padding: var(--spacing-sm);
    border: 1px solid var(--border-subtle);
    border-radius: 2px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.install-step code::before {
    content: '$ ';
    color: var(--text-secondary);
}

/* Requirements */
.requirements {
    text-align: center;
}

.requirements ul {
    list-style: none;
    max-width: 600px;
    margin: var(--spacing-lg) auto 0;
}

.requirements li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    background: var(--bg-darker);
    border: 1px solid var(--border-subtle);
    border-radius: 2px;
    padding-left: 2.5rem;
    position: relative;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.requirements li:hover {
    border-color: var(--terminal-green);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.08);
}

.requirements li::before {
    content: "[+]";
    position: absolute;
    left: 1rem;
    color: var(--terminal-green);
    font-weight: 400;
    font-family: 'JetBrains Mono', monospace;
}

/* CTA Section */
.cta {
    text-align: center;
    background: var(--bg-dark);
    border-top: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 50% 80% at 50% 100%, rgba(16, 185, 129, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.cta h2 {
    margin-bottom: var(--spacing-sm);
}

.cta p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        margin: 10px;
        padding: 10px 20px;
        width: calc(100% - 20px);
        max-width: fit-content;
        margin-left: auto;
    }

    .nav-links {
        gap: 16px;
        font-size: 14px;
    }

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

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

    .install-steps {
        grid-template-columns: 1fr;
    }
}

/* Typography overrides */
h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

/* Scanning effect on hover */
@keyframes scan {
    0% { background-position: 0 0; }
    100% { background-position: 0 100%; }
}

.hero-content {
    position: relative;
}

.hero-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(0deg, transparent 0%, rgba(14, 165, 233, 0.03) 50%, transparent 100%);
    background-size: 100% 200%;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: -1;
}

.hero:hover .hero-content::before {
    opacity: 1;
    animation: scan 3s linear infinite;
}