/* ==========================================================================
   Axion-HDL Website Styles
   Modern, dark theme with FPGA/terminal aesthetic
   ========================================================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg-primary: #0a0e14;
    --color-bg-secondary: #0d1117;
    --color-bg-tertiary: #161b22;
    --color-bg-card: rgba(22, 27, 34, 0.8);

    --color-accent-primary: #00d9ff;
    --color-accent-secondary: #00ff88;
    --color-accent-tertiary: #7c4dff;

    --color-text-primary: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-text-muted: #6e7681;

    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-hover: rgba(255, 255, 255, 0.2);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

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

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

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

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-tertiary) 100%);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.3);
    color: var(--color-bg-primary);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

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

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(10, 14, 20, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-primary);
}

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

.logo-icon {
    font-size: 1.5rem;
}

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

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

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

/* Hero Section */
.hero {
    position: relative;
    padding: calc(80px + var(--space-4xl)) 0 var(--space-4xl);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-lg);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-secondary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 50%, var(--color-accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    max-width: 540px;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.install-box {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1rem;
    max-width: fit-content;
}

.install-box code {
    color: var(--color-accent-secondary);
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xs);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.copy-btn:hover {
    color: var(--color-accent-primary);
}

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

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Terminal Visual */
.hero-visual {
    z-index: 1;
}

.terminal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

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

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

.terminal-dot.red {
    background: #ff5f56;
}

.terminal-dot.yellow {
    background: #ffbd2e;
}

.terminal-dot.green {
    background: #27ca40;
}

.terminal-title {
    flex: 1;
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.terminal-body {
    padding: var(--space-lg);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
}

.terminal-body pre {
    margin: 0;
}

.terminal-body .prompt {
    color: var(--color-accent-primary);
}

.terminal-body .comment {
    color: var(--color-text-muted);
}

.terminal-body .file {
    color: var(--color-accent-secondary);
}

.terminal-body .dim {
    color: var(--color-text-muted);
}

.terminal-body .success {
    color: var(--color-accent-secondary);
}

/* Hero Background */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 30%, rgba(124, 77, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

/* Stats Section */
.stats {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

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

.section-header p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--space-4xl) 0;
}

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

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

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent-primary);
    box-shadow: 0 12px 40px rgba(0, 217, 255, 0.1);
}

.feature-icon {
    margin-bottom: var(--space-md);
    color: var(--color-accent-primary);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

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

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

/* How It Works Section - Vertical Layout */
.how-it-works {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
}

.steps-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.step-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-2xl);
    align-items: start;
}

.step-info {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-tertiary));
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-bg-primary);
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: var(--space-sm);
}

.step-content p {
    font-size: 0.95rem;
}

.step-code {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    overflow-x: auto;
}

.step-code pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.7;
}

.step-code .keyword {
    color: var(--color-accent-tertiary);
}

.step-code .comment {
    color: var(--color-text-muted);
    font-style: italic;
}

.step-code .prompt {
    color: var(--color-accent-primary);
}

/* Examples Section */
.examples {
    padding: var(--space-4xl) 0;
}

.examples-tabs {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--color-border);
}

.tab-btn {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tab-btn:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.tab-btn.active {
    color: var(--color-accent-primary);
    background: var(--color-bg-tertiary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent-primary);
}

.tabs-content {
    padding: var(--space-xl);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.tab-panel pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

.tab-panel .key {
    color: var(--color-accent-primary);
}

.tab-panel .string {
    color: var(--color-accent-secondary);
}

.tab-panel .boolean {
    color: var(--color-accent-tertiary);
}

.tab-panel .comment {
    color: var(--color-text-muted);
    font-style: italic;
}

.tab-panel .keyword {
    color: var(--color-accent-tertiary);
}

.tab-panel .tag {
    color: var(--color-accent-primary);
}

.tab-panel .attr {
    color: var(--color-accent-secondary);
}

/* Usage Modes Section */
.usage-modes {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
}

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

.mode-card {
    padding: var(--space-xl);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.mode-icon {
    margin-bottom: var(--space-md);
    color: var(--color-accent-primary);
}

.mode-icon svg {
    width: 40px;
    height: 40px;
}

.mode-card h3 {
    margin-bottom: var(--space-sm);
}

.mode-card p {
    margin-bottom: var(--space-lg);
    font-size: 0.95rem;
}

.mode-card code {
    display: block;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--color-accent-secondary);
    font-size: 0.85rem;
}

/* CTA Section */
.cta {
    padding: var(--space-4xl) 0;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(124, 77, 255, 0.1) 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.cta-content {
    text-align: center;
}

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

.cta p {
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

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

/* Footer */
.footer {
    padding: var(--space-3xl) 0 var(--space-xl);
    background: var(--color-bg-secondary);
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-brand .logo-icon {
    font-size: 2rem;
}

.footer-brand .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

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

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

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

.footer-column a {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-license {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto var(--space-xl);
    }

    .hero-cta {
        align-items: center;
    }

    .hero-visual {
        max-width: 560px;
        margin: 0 auto;
    }

    .features-grid,
    .modes-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .step-row {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: calc(80px + var(--space-2xl)) 0 var(--space-2xl);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid,
    .steps,
    .modes-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .tabs-header {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1 1 50%;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .install-box {
        font-size: 0.85rem;
        padding: var(--space-sm) var(--space-md);
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }

    .stat-number {
        font-size: 2rem;
    }

    .terminal-body {
        font-size: 0.75rem;
        padding: var(--space-md);
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}