:root {
    --primary: #059669;
    --primary-dark: #047857;
    --primary-light: #d1fae5;
    --bg: #f8fafc;
    --bg-dark: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --border: #e2e8f0;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 12px;
    --radius-lg: 16px;
    --max-width: 1200px;
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.25rem;
}

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

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

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.nav-github {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg);
    border-radius: 20px;
}

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(5, 150, 105, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 80%, rgba(5, 150, 105, 0.1), transparent);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin-bottom: 60px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(5, 150, 105, 0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 150, 105, 0.5);
}

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

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

.btn-version {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-left: 4px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.platform-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.platform-badge {
    padding: 6px 14px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-light);
}

/* Hero Demo */
.hero-demo {
    width: 100%;
    max-width: 600px;
}

.demo-window {
    background: var(--bg-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.demo-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-dots {
    display: flex;
    gap: 8px;
}

.demo-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f56;
}

.demo-dots span:nth-child(2) {
    background: #ffbd2e;
}

.demo-dots span:nth-child(3) {
    background: #27c93f;
}

.demo-title {
    color: var(--text-lighter);
    font-size: 0.875rem;
    margin-left: auto;
    margin-right: auto;
    padding-right: 60px;
}

.demo-content {
    padding: 24px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
}

.demo-line {
    margin-bottom: 12px;
    color: #e2e8f0;
}

.demo-hash {
    color: #94a3b8;
}

.demo-cmd {
    display: flex;
    align-items: center;
    gap: 8px;
}

.demo-prompt {
    color: var(--primary);
}

.demo-type {
    color: #fbbf24;
}

.demo-cursor {
    color: var(--primary);
    animation: blink 1s infinite;
}

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

.demo-uploading {
    color: #60a5fa;
}

.demo-spinner {
    display: inline-block;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.demo-success {
    color: #4ade80;
}

.demo-check {
    color: #4ade80;
}

.demo-url {
    color: #60a5fa;
}

/* Section Common Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    background: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.3s;
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

.feature-card code {
    background: rgba(5, 150, 105, 0.1);
    color: var(--primary-dark);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.feature-card kbd {
    background: var(--text);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    font-family: monospace;
}

/* IDE Support Section */
.ides {
    background: var(--bg);
}

/* IDE Cloud - Modern Tag Design */
.ide-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.ide-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 100px;
    transition: all 0.3s;
    cursor: default;
}

.ide-tag:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.ide-tag.featured {
    background: linear-gradient(135deg, white 0%, var(--primary-light) 100%);
    border-color: var(--primary-light);
}

.ide-tag.featured:hover {
    border-color: var(--primary);
}

.ide-badge-small {
    background: var(--primary);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 8px;
    text-transform: uppercase;
}

.ide-name {
    font-weight: 600;
    color: var(--primary);
    font-size: 1rem;
}

.ide-desc {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Install Section */
.install {
    background: white;
}

.install-steps {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 280px;
    max-width: 360px;
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.step-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.step-link:hover {
    text-decoration: underline;
}

.code-block {
    display: block;
    background: var(--bg-dark);
    color: #e2e8f0;
    padding: 16px;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    margin-bottom: 8px;
}

.step-note {
    font-size: 0.875rem;
    color: var(--text-lighter);
}

.config-preview {
    background: var(--bg-dark);
    padding: 16px;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.config-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.config-item:last-child {
    border-bottom: none;
}

.config-key {
    color: #94a3b8;
}

.config-value {
    color: #60a5fa;
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
    font-weight: 300;
}

.install-note {
    margin-top: 40px;
    text-align: center;
    padding: 20px;
    background: var(--primary-light);
    border-radius: var(--radius);
}

.install-note p {
    color: var(--primary-dark);
}

/* Roadmap Section */
.roadmap {
    background: var(--bg);
}

.roadmap-list {
    max-width: 600px;
    margin: 0 auto;
}

.roadmap-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    font-size: 1.1rem;
}

.roadmap-item:last-child {
    border-bottom: none;
}

.roadmap-status {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.roadmap-item.done .roadmap-status {
    color: var(--primary);
    font-weight: 700;
}

.roadmap-item.done {
    color: var(--text-light);
}

.roadmap-item:not(.done) .roadmap-status {
    color: var(--text-lighter);
}

/* CTA Section */
.cta {
    background: var(--bg-dark);
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 16px;
}

.cta p {
    color: var(--text-lighter);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

.cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-brand p {
    color: var(--text-lighter);
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-lighter);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-bottom a {
    color: white;
    text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .install-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .step {
        max-width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

/* Animations */
@media (prefers-reduced-motion: no-preference) {
    .feature-card,
    .ide-tag,
    .step {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInUp 0.6s ease forwards;
    }
    
    .ide-tag:nth-child(1) { animation-delay: 0.1s; }
    .ide-tag:nth-child(2) { animation-delay: 0.2s; }
    .ide-tag:nth-child(3) { animation-delay: 0.3s; }
    .ide-tag:nth-child(4) { animation-delay: 0.4s; }
    .ide-tag:nth-child(5) { animation-delay: 0.5s; }
    .ide-tag:nth-child(6) { animation-delay: 0.6s; }
}

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