/* ============================
   pyflix Website - Main Styles
   Teal/Cyan Color Palette
   ============================ */

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

:root {
    /* Colors - Teal/Cyan Dark Theme */
    --color-bg: #0a0f0f;
    --color-bg-secondary: #0d1414;
    --color-bg-tertiary: #141e1e;
    --color-surface: #121a1a;
    --color-surface-elevated: #1a2626;
    
    --color-text: #f0f5f5;
    --color-text-secondary: #a0b0b0;
    --color-text-muted: #6b7b7b;
    
    --color-primary: #14b8a6;
    --color-primary-light: #2dd4bf;
    --color-primary-dark: #0d9488;
    
    --color-accent: #06b6d4;
    --color-accent-secondary: #22d3ee;
    
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    --color-border: rgba(20, 184, 166, 0.15);
    --color-border-light: rgba(20, 184, 166, 0.25);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    --gradient-hero: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    --gradient-glow: radial-gradient(circle at 50% 50%, var(--color-primary) 0%, transparent 70%);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 30px rgba(20, 184, 166, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Layout */
    --max-width: 1200px;
    --navbar-height: 64px;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-surface);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================
   Navigation
   ============================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(10, 15, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: background var(--transition-normal);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-text);
}

.logo-icon {
    font-size: 1.75rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
}

.github-link:hover {
    background: var(--color-surface-elevated);
    border-color: var(--color-border-light);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ============================
   Hero Section
   ============================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: calc(var(--navbar-height) + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.orb-1 {
    top: 10%;
    left: 20%;
    width: 400px;
    height: 400px;
    background: var(--color-primary);
}

.orb-2 {
    top: 30%;
    right: 10%;
    width: 300px;
    height: 300px;
    background: var(--color-accent);
}

.orb-3 {
    bottom: 20%;
    left: 40%;
    width: 350px;
    height: 350px;
    background: var(--color-primary-dark);
}

.hero .container {
    position: relative;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.badge-icon {
    font-size: 1.1rem;
}

.hero-title {
    margin-bottom: var(--spacing-lg);
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* Terminal/Code Demo */
.terminal-demo {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    max-width: 650px;
    margin: 0 auto var(--spacing-2xl);
    text-align: left;
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.terminal-buttons {
    display: flex;
    gap: 8px;
}

.terminal-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.btn-close { background: #ff5f56; }
.btn-minimize { background: #ffbd2e; }
.btn-maximize { background: #27ca40; }

.terminal-title {
    flex: 1;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.terminal-body {
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.terminal-line {
    margin-bottom: var(--spacing-sm);
    min-height: 1.5em;
}

.keyword { color: #c678dd; }
.module { color: var(--color-accent); }
.class-name { color: #e5c07b; }
.variable { color: var(--color-text); }
.operator { color: var(--color-text-muted); }
.param { color: #e06c75; }
.number { color: #d19a66; }
.string { color: #98c379; }
.boolean { color: #d19a66; }
.method { color: #61afef; }
.comment { color: var(--color-text-muted); font-style: italic; }
.prompt { color: var(--color-success); }
.output-text { color: var(--color-primary-light); }

.terminal-line.output {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* Quick Install */
.quick-install {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
}

.quick-install h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.install-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    border-color: var(--color-border-light);
    color: var(--color-text);
}

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

.install-content {
    min-height: 60px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.code-block {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
}

.code-block code {
    flex: 1;
    background: none;
    padding: 0;
    color: var(--color-accent);
    font-size: 0.9rem;
    word-break: break-all;
}

.copy-btn {
    flex-shrink: 0;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    color: var(--color-text);
    background: var(--color-surface);
}

.copy-btn.copied {
    color: var(--color-success);
}

.install-note {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ============================
   Features Section
   ============================ */
.features {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.feature-card p {
    font-size: 0.95rem;
}

/* ============================
   Architecture Section
   ============================ */
.architecture {
    padding: var(--spacing-4xl) 0;
}

.architecture-diagram {
    margin-bottom: var(--spacing-3xl);
}

.arch-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.arch-item {
    text-align: center;
    padding: var(--spacing-md);
}

.arch-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.arch-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.arch-arrow {
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: bold;
}

.components-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.component-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.component-card h4 {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.component-card p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.component-card code {
    font-size: 0.8rem;
}

/* ============================
   API Section
   ============================ */
.api {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg-secondary);
}

.api-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.api-example h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.code-block-large {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-block-large pre {
    padding: var(--spacing-lg);
    overflow-x: auto;
    margin: 0;
}

.code-block-large code {
    background: none;
    padding: 0;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--color-text);
}

.yaml-key { color: #e06c75; }

/* ============================
   Installation Detailed Section
   ============================ */
.install-detailed {
    padding: var(--spacing-4xl) 0;
}

.install-steps {
    max-width: 700px;
    margin: 0 auto;
}

.install-step {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.step-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.step-content p {
    margin-bottom: var(--spacing-md);
}

.step-content .code-block {
    flex-direction: column;
    align-items: stretch;
}

.step-content .code-block code {
    white-space: pre;
    font-size: 0.85rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border-light);
    color: var(--color-text);
}

.btn-outline:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ============================
   CTA Section
   ============================ */
.cta {
    padding: var(--spacing-4xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: var(--gradient-glow);
    opacity: 0.3;
    filter: blur(100px);
    pointer-events: none;
}

.cta .container {
    position: relative;
}

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

.cta p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ============================
   Footer
   ============================ */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    font-size: 0.95rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

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

/* ============================
   Responsive Design
   ============================ */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .api-examples {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --navbar-height: 56px;
    }
    
    .nav-links {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding-top: calc(var(--navbar-height) + var(--spacing-2xl));
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .terminal-demo {
        margin-left: calc(-1 * var(--spacing-md));
        margin-right: calc(-1 * var(--spacing-md));
        border-radius: 0;
    }
    
    .terminal-body {
        font-size: 0.8rem;
    }
    
    .arch-flow {
        flex-direction: column;
    }
    
    .arch-arrow {
        transform: rotate(90deg);
    }
    
    .install-step {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .features-grid,
    .components-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

/* ============================
   Utilities
   ============================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Print Styles */
@media print {
    .navbar,
    .cta,
    .hero-bg {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}