/* ════════════════════════════════════════════════════════════ */
/* sinner landing page · zero fluff, pure function             */
/* ════════════════════════════════════════════════════════════ */

/* CSS Custom Properties */
:root {
    /* Terminal colors */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #7ee787;
    --border-color: #30363d;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    cursor: default;
}

a, button, .cta-button, .copy-button {
    cursor: pointer;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Typography */
h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: var(--space-md);
    text-align: center;
    text-transform: lowercase;
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    text-transform: lowercase;
}

p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-green);
}

code {
    font-family: var(--font-mono);
    background-color: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9rem;
}

pre {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: var(--space-sm);
    overflow-x: auto;
    margin: var(--space-sm) 0;
}

pre code {
    background: none;
    padding: 0;
}

/* Hero Section */
.hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-lg) 0;
}

.ascii-logo {
    color: var(--accent-green);
    font-size: 1rem;
    line-height: 1.2;
    margin-bottom: var(--space-xs);
    margin-left: 0.5rem;
    text-shadow: 0 0 10px rgba(126, 231, 135, 0.3);
    background: none;
    border: none;
    padding: 0;
    white-space: pre;
    font-family: var(--font-mono);
    overflow-x: auto;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-top: var(--space-md);
    margin-bottom: var(--space-md);
    text-transform: lowercase;
}

.signature {
    color: var(--accent-blue);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    margin: var(--space-sm) 0;
}

.hero .signature {
    font-size: 1rem;
}

.cta-button {
    display: inline-block;
    margin-top: var(--space-md);
    padding: 1rem 2rem;
    background-color: transparent;
    color: var(--accent-green);
    border: 2px solid var(--accent-green);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 1rem;
    text-transform: lowercase;
    text-decoration: none;
    transition: all 0.3s;
}

.cta-button:hover {
    background-color: var(--accent-green);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(126, 231, 135, 0.3);
}

/* Demo Section */
.demo-section {
    padding: var(--space-lg) 0;
}

.terminal-window {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    max-width: 800px;
    margin: 0 auto;
}

.terminal-header {
    background-color: var(--bg-tertiary);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.terminal-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-button.close { background-color: #ff5f57; }
.terminal-button.minimize { background-color: #febc2e; }
.terminal-button.maximize { background-color: #28c840; }

.terminal-title {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.terminal-body {
    padding: var(--space-md);
    /* height: 400px; */
    font-size: 0.95rem;
    overflow-y: auto;
}

.demo-terminal .terminal-body {
        height: 450px !important;
    }

.philosophy-terminal .terminal-body {
        height: 580px !important;
    }

.what-is-sinner .terminal-body {
    height: 580px !important;
}

#terminal-content {
    margin-bottom: var(--space-sm);
}

.prompt {
    color: var(--accent-green);
    margin-right: 0.5rem;
}

.cursor {
    color: var(--accent-blue);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

#terminal-output {
    color: var(--text-primary);
    white-space: pre-wrap;
    margin-top: var(--space-sm);
}

.output-line {
    margin: 0.25rem 0;
}

.demo-caption,
.philosophy-caption {
    text-align: center;
    margin-top: var(--space-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Features Section */
.features {
    padding: var(--space-xl) 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.feature-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-md);
    text-align: left;
    transition: border-color 0.3s, transform 0.2s;
}

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

.feature-card h3 {
    color: var(--accent-green);
    margin-bottom: var(--space-sm);
}

/* Commands Section */
.commands {
    padding: var(--space-xl) 0;
}

.command-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.command-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-md);
    transition: border-color 0.3s;
}

.command-card:hover {
    border-color: var(--accent-green);
}

.command-name {
    display: block;
    font-size: 1.1rem;
    color: var(--accent-blue);
    background: none;
    padding: 0;
    margin-bottom: var(--space-sm);
}

.command-example {
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 0.85rem;
}

.example-input {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.example-output {
    color: var(--accent-green);
    font-weight: 500;
}

/* CTA Sections */
.cta-section {
    padding: var(--space-xl) 0;
    text-align: center;
}

.cta-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: var(--space-md) 0 var(--space-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Installation Section */
.installation {
    padding: var(--space-xl) 0;
}

.install-steps {
    max-width: 800px;
    margin: var(--space-lg) auto 0;
}

.install-step {
    display: flex;
    min-width: 320px;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.install-step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--bg-secondary);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 1.1rem;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    color: var(--accent-blue);
}

/* What is Sinner (Philosophy Demo) */
.what-is-sinner {
    padding: var(--space-lg) 0;
}

/* Why Local Section */
.why-local {
    padding: var(--space-xl) 0;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.why-item {
    padding: var(--space-md);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: border-color 0.3s, transform 0.2s;
}

.why-item:hover {
    border-color: var(--accent-green);
    transform: translateY(-2px);
}

.why-item h3 {
    color: var(--accent-green);
    margin-bottom: var(--space-sm);
}

/* Footer */
footer {
    padding: var(--space-xl) 0;
    text-align: center;
}

.footer-logo-link {
    display: inline-block;
    text-decoration: none;
    transition: transform 0.2s;
}

.footer-logo-link:hover {
    transform: scale(1.05);
}

.footer-logo-link:hover .footer-logo {
    opacity: 1;
    text-shadow: 0 0 15px rgba(126, 231, 135, 0.5);
}

.footer-logo {
    font-size: 0.7rem;
    margin-bottom: 0.25rem;
    opacity: 0.9;
    transition: opacity 0.2s, text-shadow 0.2s;
}

.footer-links {
    margin-top: var(--space-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.footer-links a:hover {
    color: var(--accent-green);
}

.footer-links .separator {
    margin: 0 var(--space-xs);
    color: var(--border-color);
}

.footer-ship-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

/* Utility Classes */
.code-block-wrapper {
    position: relative;
    width: 100%;
}

pre {
    position: relative;
}

.copy-button {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: lowercase;
    line-height: 1;
    z-index: 2;
}

.copy-button:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.copy-button:active {
    transform: scale(0.95);
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Media Queries */
@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 4rem;
    }
    
    .ascii-logo {
        font-size: 0.75rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
    
    .hero .signature {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 1.4rem;
    }
    
    h3 {
        font-size: 1.05rem;
    }
    
    p {
        font-size: 0.9rem;
    }
    
    .demo-caption,
    .philosophy-caption {
        font-size: 0.75rem !important;
    }
    
    .feature-grid,
    .command-grid,
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .terminal-body {
        font-size: 0.95rem;
        padding: var(--space-sm);
        /* height: 295px; */
        min-height: 200px;
        max-height: 65vh;
        overflow-y: auto;
    }
    
    .what-is-sinner .terminal-body {
        height: 380px;
        min-height: 260px;
        max-height: 75vh;
        overflow-y: auto;
    }

    /* Set heights for each terminal window separately */
    .demo-terminal .terminal-body {
        height: 370px !important;
    }
    .philosophy-terminal .terminal-body {
        height: 675px !important;
    }
    
    .install-step {
        flex-direction: column;
        gap: var(--space-sm);
    }
    .installation .step-number {
        font-size: 1rem;
        /* width: 2.2rem;
        height: 2.2rem; */
    }
    .installation .step-content h3 {
        font-size: 1rem !important;
        margin-bottom: 0.25rem;
    }
    .installation pre,
    .installation pre code {
        font-size: 0.9rem !important;
        padding: 0.5rem 1rem;
    }
    .installation .step-content p {
        font-size: 0.9rem !important;
    }

    .install-steps {
        margin: auto 0;
    }

    /* tighten and constrain pre/code in installation on small devices */
    .installation pre {
        max-width: 100%;
        overflow-x: auto;
        white-space: pre;
        padding-left: 0.4rem;
        padding-right: 0.4rem;
        padding-top: 1rem !important;
    }
    .installation pre code {
        display: block;
        width: 100%;
        max-width: 80vw !important;
        min-width: 300px;
    }
    .install-step .step-content {
        padding-left: 0;
    }

    .footer-logo {
        font-size: 0.5rem;
    }
    
    .footer-links {
        font-size: 0.85rem;
    }
    
    .cta-text {
        font-size: 0.95rem;
    }

    .command-card {
        padding: v
    }

    .feature-card,
        .command-card,
        .install-card,
        .why-item {
            padding: 1.5rem 1rem;
        }
}