@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
    --primary: #6366f1;
    --primary-light: #8b5cf6;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --dark: #0f172a;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow: 0 10px 25px rgba(0,0,0,0.08);
    --shadow-lg: 0 25px 50px rgba(0,0,0,0.12);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(248, 250, 252, 0.98);
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--gray-light);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

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

.cta-button {
    background: var(--gradient-primary);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    padding: 2rem;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-nav-links {
    list-style: none;
    margin-top: 4rem;
}

.mobile-nav-links li {
    margin-bottom: 1.5rem;
}

.mobile-nav-links a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    background: var(--light);
    color: var(--dark);
    padding: 10rem 0 8rem;
    text-align: center;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: var(--gray);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn-primary, .btn-secondary {
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    display: block;
    margin-bottom: 0.2rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
    text-transform: uppercase;
}

/* Sections General */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-light);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--gray);
    font-size: 1rem;
}

/* Tech Stack Section */
.tech-stack {
    padding: 6rem 0;
    background: var(--light);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
}

.tech-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--gray-light);
    text-align: center;
    transition: var(--transition);
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.tech-icon {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.tech-item h4 {
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.tech-item p {
    color: var(--gray);
    font-size: 0.85rem;
}

/* Installation Section */
.installation {
    padding: 6rem 0;
    background: var(--white);
}

.install-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.install-step {
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-light);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 1rem;
}

.install-step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.install-step p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.code-block {
    background: var(--dark);
    color: var(--light);
    padding: 1rem;
    border-radius: var(--radius);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-all;
    cursor: pointer;
    position: relative;
}

.code-block::before {
    content: 'Click to copy';
    position: absolute;
    top: 0.5rem;
    right: 0.8rem;
    font-size: 0.75rem;
    color: var(--gray);
    opacity: 0.6;
    transition: opacity 0.2s;
}

.code-block:hover::before {
    opacity: 1;
}

.code-block[data-before]::before {
    content: attr(data-before);
    color: var(--secondary);
}

.install-features {
    list-style: none;
    margin-top: 1rem;
}

.install-features li {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
    position: relative;
    padding-left: 1.5rem;
}

.install-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
}

/* FAQ Section */
.faq {
    padding: 6rem 0;
    background: var(--light);
}

.faq-container {
    max-width: 750px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--gray-light);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: none;
    background: none;
    text-align: left;
}

.faq-toggle {
    font-size: 1.2rem;
    transition: transform 0.3s;
    color: var(--primary);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer p {
    color: var(--gray);
    padding-bottom: 1.5rem;
}

.faq-answer.active {
    max-height: 300px;
}

/* Footer */
footer {
    background: var(--dark);
    color: var(--gray-light);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: white;
}

.footer-section a {
    color: var(--gray-light);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Scroll-to-top Button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 1000;
    font-size: 1.2rem;
}

.scroll-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Animations */
.feature-card, .install-step, .tech-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .hero {
        padding: 8rem 0 6rem;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .section-title {
        font-size: 2.2rem;
    }
    .container {
        padding: 0 1rem;
    }
}