* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { line-height: 1.6; color: #333; }
.container { width: 90%; max-width: 1100px; margin: auto; }

/* Header */
header { background: #1a1a2e; color: #fff; padding: 1rem 0; position: sticky; top: 0; z-index: 100; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: bold; color: #fff; text-decoration: none; }
.logo span { color: #4ecca3; }
nav ul { list-style: none; display: flex; gap: 20px; align-items: center; }
nav a { color: #fff; text-decoration: none; transition: color 0.3s; }
nav a:hover { color: #4ecca3; }

/* Buttons */
.btn { display: inline-block; background: #4ecca3; color: #1a1a2e; padding: 10px 25px; text-decoration: none; border-radius: 5px; font-weight: bold; border: none; cursor: pointer; transition: 0.3s; }
.btn:hover { background: #fff; }
.btn-small { padding: 5px 15px; }

/* Hero */
.hero { background: linear-gradient(135deg, #1a1a2e, #16213e); color: #fff; text-align: center; padding: 6rem 0; }
.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; }

/* Sections */
.features, .how-it-works, .testimonials, .newsletter, .page-content { padding: 3rem 0; }
.features h2, .how-it-works h2, .testimonials h2, .newsletter h2, .page-content h1 { text-align: center; margin-bottom: 2rem; }

/* Grids */
.feature-grid, .steps-grid, .blog-grid, .store-grid, .testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.feature-card, .step-card, .blog-card, .product-card, .testimonial-card { background: #f9f9f9; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); text-align: center; }
.product-card .price { font-size: 1.5rem; color: #1a1a2e; font-weight: bold; margin: 10px 0; }
.btn-text { color: #4ecca3; text-decoration: none; font-weight: bold; }

/* Newsletter */
.newsletter { background: #16213e; color: #fff; text-align: center; }
.newsletter form { display: flex; justify-content: center; gap: 10px; margin-top: 1rem; }
.newsletter input { padding: 10px; border: none; border-radius: 5px; width: 300px; }

/* Footer */
footer { background: #1a1a2e; color: #fff; padding: 2rem 0; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.footer-grid h3, .footer-grid h4 { margin-bottom: 1rem; color: #4ecca3; }
.footer-grid ul { list-style: none; }
.footer-grid a { color: #fff; text-decoration: none; }
.copyright { text-align: center; margin-top: 2rem; border-top: 1px solid #333; padding-top: 1rem; font-size: 0.9rem; }

/* Forms & Auth */
form { display: flex; flex-direction: column; gap: 1rem; max-width: 500px; margin: auto; }
input, textarea { padding: 10px; border: 1px solid #ccc; border-radius: 5px; }
.auth-container { max-width: 450px; background: #fff; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.auth-tabs { display: flex; margin-bottom: 1.5rem; }
.tab-btn { flex: 1; padding: 10px; background: none; border: none; cursor: pointer; font-size: 1rem; border-bottom: 2px solid transparent; }
.tab-btn.active { border-bottom: 2px solid #4ecca3; color: #4ecca3; font-weight: bold; }

/* FAQ */
.faq-item { margin-bottom: 1rem; border: 1px solid #ddd; border-radius: 5px; padding: 1rem; }
summary { cursor: pointer; font-weight: bold; }

/* Responsive */
@media (max-width: 768px) {
    nav ul { flex-direction: column; gap: 10px; display: none; }
    .hero h1 { font-size: 2rem; }
    .newsletter form { flex-direction: column; align-items: center; }
    .newsletter input { width: 100%; }
}