:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --background-color: #ffffff;
    --surface-color: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --success-color: #10b981;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --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);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
    font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    color: #1e293b;
}

h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
}

h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Header */
header {
    background: var(--background-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '⚡';
    font-size: 1.8rem;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
    background-color: var(--surface-color);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.hero h1 {
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: var(--text-secondary);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: var(--shadow);
}

.cta-button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

/* Components Grid */
.components-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
}

.component-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.component-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
}

.component-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.component-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.component-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.component-card p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.price-currency {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.component-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

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

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

.btn-secondary:hover {
    background: var(--border-color);
    transition: var(--transition);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transition: var(--transition);
}

/* Features List */
.features-list {
    list-style: none;
    margin: 1.5rem 0;
    padding-left: 0;
}

.features-list li {
    padding-left: 2rem;
    margin-bottom: 1rem;
    position: relative;
    color: var(--text-secondary);
}

.features-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary-color);
}

.features-list li strong {
    font-weight: 600;
    color: var(--text-primary);
}

/* Footer */
footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    margin-top: 4rem;
    text-align: center;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.8;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    color: var(--text-secondary);
}

/* Component Detail Page */
.component-detail {
    padding: 4rem 0;
}

.detail-header {
    text-align: center;
    margin-bottom: 4rem;
}

.detail-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.detail-info h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.pricing-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    position: sticky;
    top: 100px;
}

.tech-specs {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 2rem 0;
}

.tech-specs h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tech-specs ul {
    list-style: none;
}

.tech-specs li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .components-grid {
        grid-template-columns: 1fr;
    }
    
    .detail-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .pricing-card {
        position: static;
    }
    
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 4rem 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .component-card {
        padding: 1.5rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }