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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}
.css-lwlir0 {
    position: relative;
    aspect-ratio: auto 16 / 9;
}
.css-1vbtwde {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo .logo {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-item {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    position: relative;
    cursor: pointer;
    transition: color 0.3s ease;
}

.nav-item:hover {
    color: #7c3aed;
}

.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-radius: 8px;
    padding: 1rem;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: block;
    padding: 0.5rem 0;
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

.dropdown-content a:hover {
    color: #7c3aed;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-login {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: #f3f4f6;
}

.btn-signup {
    text-decoration: none;
    background: #7c3aed;
    color: white;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-signup:hover {
    background: #6d28d9;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f3e8ff 0%, #e0e7ff 100%);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #1e1b4b;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.4);
}

.hero-image {
    margin-top: 3rem;
    position: relative;
    z-index: 2;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

/* AI Section */
.ai-section {
    padding: 80px 0;
    background: white;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e1b4b;
    margin-bottom: 2rem;
    line-height: 1.3;
}

.highlight {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
    padding: 0.2rem 0.8rem;
    border-radius: 8px;
    font-weight: 800;
}

.ai-image {
    margin-top: 3rem;
}

.ai-image img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: #f8fafc;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 3rem;
    text-align: center;
}

.feature-tabs {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab {
    padding: 1rem 2rem;
    background: white;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.tab.active {
    background: #7c3aed;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.3);
}

.tab:hover:not(.active) {
    background: #f3f4f6;
    transform: translateY(-2px);
}

.feature-content {
    text-align: center;
    margin-bottom: 3rem;
}

.feature-content img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

/* Templates Section */
.templates {
    padding: 80px 0;
    background: white;
    text-align: center;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.template-item {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.template-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.template-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.template-item h3 {
    padding: 1.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e1b4b;
}

.btn-secondary {
    display: inline-block;
    background: white;
    color: #7c3aed;
    text-decoration: none;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    border: 2px solid #7c3aed;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #7c3aed;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.3);
}

/* Trust Section */
.trust {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e1b4b 0%, #3730a3 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.trust::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.trust .container {
    position: relative;
    z-index: 2;
}

.trust h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.stat h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.partners img {
    max-width: 100%;
    height: auto;
    opacity: 0.8;
    border-radius: 12px;
}

/* Features Detail Section */
.features-detail {
    padding: 80px 0;
    background: #f8fafc;
}

.features-detail h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #1e1b4b;
    margin-bottom: 3rem;
    text-align: center;
    line-height: 1.4;
}

.feature-blocks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
}

.feature-block {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.feature-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.feature-block h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e1b4b;
    margin-bottom: 1.5rem;
}

.feature-block ul {
    list-style: none;
}

.feature-block li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #64748b;
    line-height: 1.6;
}

.feature-block li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* Footer */
.footer {
    background: #1e1b4b;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #fbbf24;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #fbbf24;
}

.footer-section p {
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .feature-blocks {
        grid-template-columns: 1fr;
    }
    
    .template-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .feature-block {
        padding: 1.5rem;
    }
}