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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    color: #111827;
    background-color: #F8F9FA;
    overflow-x: hidden;
}

/* Color System Variables */
:root {
    --primary-500: #007AFF;
    --primary-700: #0059B8;
    --primary-100: #E5F2FF;
    --accent-green: #17A962;
    --neutral-900: #111827;
    --neutral-600: #4B5563;
    --neutral-500: #6B7280;
    --neutral-0: #FFFFFF;
    --neutral-100: #F8F9FA;
    --neutral-200: #E9ECEF;
    --code-bg: #0A0A0A;
    --code-text: #E4E4E7;
}

/* Spacing System (8px scale) */
.space-xs { margin: 8px; }
.space-sm { margin: 16px; }
.space-md { margin: 24px; }
.space-lg { margin: 32px; }
.space-xl { margin: 48px; }
.space-xxl { margin: 64px; }
.space-xxxl { margin: 96px; }

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1 {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

h2 {
    font-size: clamp(32px, 4vw, 40px);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 32px;
    text-align: center;
}

h3 {
    font-size: 24px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 16px;
}

p {
    font-size: 18px;
    font-weight: 400;
    color: var(--neutral-600);
    margin-bottom: 16px;
}

/* Layout utilities */
.section-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
}

.center-mt {
    text-align: center;
    margin-top: 32px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 250ms ease-out;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-500);
    color: var(--neutral-0);
}

.btn-primary:hover {
    background-color: var(--primary-700);
    transform: scale(1.03);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: transparent;
    color: var(--neutral-900);
    border: 1px solid var(--neutral-200);
}

.btn-secondary:hover {
    background-color: var(--neutral-100);
}

/* Navigation */
.nav {
    background-color: var(--neutral-0);
    padding: 16px 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--neutral-900);
    font-weight: 600;
    font-size: 20px;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--neutral-600);
    font-weight: 500;
    transition: color 250ms ease;
}

.nav-links a:hover {
    color: var(--primary-500);
}

/* Hero Section */
.hero {
    padding: 120px 0 96px;
    text-align: center;
    background-color: var(--neutral-100);
    border-bottom: 1px solid var(--neutral-200);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-tagline {
    color: var(--neutral-600);
    font-size: 20px;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.hero-badges img {
    height: 20px;
}

/* Features Section */
.features {
    padding: 96px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.feature-card {
    background-color: var(--neutral-0);
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 300ms ease-out;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 24px rgba(0, 122, 255, 0.15);
}

.feature-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 16px;
}

.feature-icon.green {
    color: var(--accent-green);
}

/* Code Examples Section */
.code-examples {
    padding: 96px 0;
    background-color: var(--neutral-0);
}

.code-block {
    background-color: var(--code-bg);
    border-radius: 16px;
    padding: 32px;
    margin: 32px 0;
    position: relative;
    overflow-x: auto;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.code-title {
    color: var(--code-text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
}

.copy-btn {
    background-color: transparent;
    border: 1px solid var(--neutral-200);
    color: var(--neutral-600);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all 250ms ease;
}

.copy-btn:hover {
    background-color: var(--neutral-100);
}

.code-content {
    font-family: 'JetBrains Mono', monospace;
    font-size: 16px;
    color: var(--code-text);
    line-height: 1.6;
}

.code-content .comment {
    color: #6A737D;
}

.code-content .keyword {
    color: #F97583;
}

.code-content .string {
    color: #9ECBFF;
}

.code-content .function {
    color: #B392F0;
}

.code-content .import {
    color: #79B8FF;
}

/* Examples Section */
.examples {
    padding: 96px 0;
    background-color: var(--neutral-0);
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.example-card {
    background-color: var(--neutral-100);
    border-radius: 16px;
    overflow: hidden;
    transition: all 300ms ease-out;
}

.example-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 24px rgba(0, 122, 255, 0.15);
}

.example-preview {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--accent-green) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-900);
    font-size: 18px;
    font-weight: 600;
}

.example-content {
    padding: 24px;
}

.example-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--neutral-900);
}

.example-description {
    color: var(--neutral-600);
    margin-bottom: 16px;
}

.example-link {
    color: var(--primary-500);
    text-decoration: none;
    font-weight: 500;
}

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

/* CTA Section */
.cta {
    padding: 96px 0;
    text-align: center;
    background-color: var(--neutral-900);
    color: var(--neutral-0);
}

.cta h2 {
    color: var(--neutral-0);
    margin-bottom: 24px;
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    font-size: 20px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.cta .btn-primary {
    background-color: var(--neutral-0);
    color: var(--primary-500);
}

.cta .btn-primary:hover {
    background-color: var(--neutral-100);
    transform: scale(1.03);
}

.cta .btn-secondary {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--neutral-0);
}

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

/* Footer */
.footer {
    background-color: var(--neutral-900);
    color: var(--neutral-500);
    padding: 48px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--neutral-0);
    font-weight: 600;
    font-size: 20px;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--neutral-500);
    text-decoration: none;
    transition: color 250ms ease;
}

.footer-links a:hover {
    color: var(--primary-500);
}

.footer-bottom {
    border-top: 1px solid var(--neutral-600);
    padding-top: 24px;
    margin-top: 24px;
}

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

    .hero {
        padding: 100px 0 64px;
    }

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

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

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

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