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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    display: inline;
}

.logo span {
    font-size: 1rem;
    color: #764ba2;
    margin-left: 5px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: #667eea;
    color: white;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    color: white;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

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

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.feature-icon {
    font-size: 2rem;
}

/* Sections */
.section {
    padding: 80px 0;
    background: white;
    margin: 20px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #667eea;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #666;
}

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

.feature-item {
    padding: 1.5rem;
    background: #f8f9ff;
    border-radius: 15px;
    border-left: 4px solid #667eea;
}

.feature-item h4 {
    margin-bottom: 0.5rem;
    color: #333;
}

/* download Section */
.download-content {
    max-width: 600px;
    margin: 0 auto;
}

.download-info h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #667eea;
}

.download-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8f9ff;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.download-item:hover {
    transform: translateX(10px);
}

.download-icon {
    font-size: 1.5rem;
}

/* Contact Section */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #667eea;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8f9ff;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
}

.contact-icon {
    font-size: 1.5rem;
}

/* Support Section */
.support-content {
    max-width: 700px;
    margin: 0 auto;
}

.support-form {
    background: #f8f9ff;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e1e5ee;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.submit-btn {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem 0;
    text-align: center;
    color: #666;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        gap: 1rem;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .hero-features {
        gap: 1.5rem;
    }
    
    .section {
        margin: 10px;
        padding: 40px 0;
    }
    
    .support-form {
        padding: 2rem;
    }
}