/* CSS Custom Properties */
:root {
    --color-bg: #0a0a0a;
    --color-surface: #111111;
    --color-surface-hover: #161616;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-subtle: rgba(255, 255, 255, 0.04);
    --color-text-primary: #f5f5f5;
    --color-text-secondary: #888888;
    --color-text-muted: #555555;
    --color-accent: #6366f1;
    --color-accent-hover: #818cf8;
    --color-accent-glow: rgba(99, 102, 241, 0.15);
    --color-accent-subtle: rgba(99, 102, 241, 0.08);
    --color-success: #22c55e;
    --color-code-bg: #0d0d0d;
    --color-terminal-bg: #0c0c0c;
    
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 720px;
}

/* Typography */
h1, h2, h3, h4 {
    color: var(--color-text-primary);
    font-weight: 600;
    line-height: 1.2;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 600;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #ffffff;
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-secondary:hover {
    background-color: var(--color-accent-subtle);
    transform: translateY(-1px);
}

.btn-full {
    width: 100%;
}

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

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
}

.nav-logo {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Sections */
.section {
    padding: 100px 0;
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-headline {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-subheadline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

/* Terminal */
.hero-terminal {
    position: relative;
    z-index: 1;
    max-width: 680px;
    margin: 0 auto;
}

.terminal {
    background-color: var(--color-terminal-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.02),
        0 20px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 80px -20px var(--color-accent-glow);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    background-color: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--color-border);
}

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

.terminal-dot-red { background-color: #ff5f56; }
.terminal-dot-yellow { background-color: #ffbd2e; }
.terminal-dot-green { background-color: #27c93f; }

.terminal-title {
    margin-left: 12px;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
}

.terminal-line {
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
}

.terminal-prompt {
    color: var(--color-accent);
    font-weight: 500;
    flex-shrink: 0;
    min-width: 60px;
}

.terminal-user .terminal-prompt {
    color: var(--color-success);
}

.terminal-response span:last-child {
    color: var(--color-text-secondary);
}

.terminal-label {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin-top: 12px;
    display: block;
}

.terminal-table {
    margin: 16px 0;
    overflow-x: auto;
}

.terminal-table pre {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin: 0;
    white-space: pre;
}

.terminal-recommendation {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.terminal-bullet {
    margin-right: 8px;
}

.terminal-recommendation strong {
    color: var(--color-text-primary);
}

/* Problem Section */
.section-problem {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.problem-card {
    padding: 32px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.problem-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.1);
}

.problem-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent-subtle);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    margin-bottom: 20px;
}

.problem-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.problem-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Solution Section */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.solution-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.solution-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent-subtle);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    flex-shrink: 0;
}

.solution-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.solution-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Features Section */
.section-features {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.feature-card {
    position: relative;
    padding: 32px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.1);
}

.feature-accent {
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent) 0%, transparent 100%);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* How It Works */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.step-card {
    text-align: center;
    padding: 32px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-accent);
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 20px;
}

.step-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.step-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Code Blocks */
.code-block {
    position: relative;
    background-color: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: left;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-success);
}

.code-block-multiline pre {
    margin: 0;
    overflow-x: auto;
}

.code-block-multiline code {
    white-space: pre-wrap;
    word-break: break-word;
}

.code-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.code-copy:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
}

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

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 800px;
    margin: 48px auto 0;
}

.pricing-card {
    position: relative;
    padding: 32px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: transform var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-2px);
}

.pricing-card-featured {
    border-color: var(--color-accent);
    box-shadow: 0 0 40px -12px var(--color-accent-glow);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 12px;
    background-color: var(--color-accent);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
    white-space: nowrap;
}

.pricing-header {
    text-align: center;
    padding-bottom: 24px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.pricing-tier {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.pricing-amount {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.pricing-period {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.pricing-check {
    color: var(--color-success);
    flex-shrink: 0;
}

.pricing-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Install Section */
.section-install {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.install-steps {
    max-width: 640px;
    margin: 48px auto 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.install-step {
    text-align: center;
}

.install-step-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.code-block-install {
    max-width: 400px;
    margin: 0 auto;
    text-align: left;
}

.install-step-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.install-step-text code {
    display: block;
    margin-top: 12px;
    padding: 12px 16px;
    background-color: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-success);
}

/* FAQ */
.section-faq {
    border-top: 1px solid var(--color-border);
}

.faq-list {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.faq-item:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

.faq-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-primary);
    transition: background-color var(--transition-fast);
}

.faq-trigger:hover {
    background-color: var(--color-surface-hover);
}

.faq-trigger:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
}

.faq-chevron {
    color: var(--color-text-muted);
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-trigger[aria-expanded="true"] .faq-chevron {
    transform: rotate(180deg);
}

.faq-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-slow);
}

.faq-content-inner {
    overflow: hidden;
}

.faq-content p {
    padding: 0 24px 20px;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Footer */
.footer {
    padding: 64px 0 32px;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 32px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.footer-tagline {
    margin-top: 8px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.footer-nav {
    display: flex;
    gap: 32px;
}

.footer-link {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 0.6s ease-out;
}

.hero-terminal {
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive */
@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 24px;
        gap: 24px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all var(--transition-base);
    }
    
    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .section {
        padding: 80px 0;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-ctas .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .terminal-body {
        padding: 16px;
        font-size: 0.6875rem;
    }
    
    .terminal-table pre {
        font-size: 0.5625rem;
    }
    
    .solution-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .terminal {
        border-radius: var(--radius-lg);
    }
    
    .problem-card,
    .feature-card,
    .step-card,
    .pricing-card {
        padding: 24px;
    }
}