:root {
    --primary-color: #B71C1C;
    --secondary-color: #212121;
    --accent-color: #F44336;
    --bg-color: #F5F5F5;
    --text-color: #333333;
    --light-text: #FFFFFF;
    --card-bg: #FFFFFF;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica', Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    margin-left: 10px;
}

.logo-icon {
    background-color: white;
    color: var(--primary-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
    font-weight: bold;
    font-size: 18px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.lang-options {
    display: flex;
    align-items: center;
}

.lang-btn {
    background: none;
    border: 1px solid white;
    color: white;
    width: 35px;
    height: 30px;
    margin-left: 5px;
    cursor: pointer;
    border-radius: 3px;
    font-weight: bold;
}

.lang-btn.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(183, 28, 28, 0.9), rgba(33, 33, 33, 0.9)), url('/api/placeholder/1200/600') center/cover no-repeat;
    color: var(--light-text);
    padding: 150px 0 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px auto;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--light-text);
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #d32f2f;
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--light-text);
    margin-left: 15px;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* About Section */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    color: var(--primary-color);
    font-size: 36px;
    margin-bottom: 15px;
}

.section-header p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--secondary-color);
}

/* Features Section */
.features {
    background-color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    background-color: var(--primary-color);
    color: var(--light-text);
    font-size: 48px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-content {
    padding: 25px;
}

.feature-content h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 20px;
}

.feature-content p {
    color: var(--text-color);
}

/* Advantages Section */
.advantages {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

.advantages .section-header h2 {
    color: var(--light-text);
}

.advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-item {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 25px;
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-item h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    font-size: 18px;
}

.advantage-item h3 span {
    background-color: var(--accent-color);
    color: var(--light-text);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    font-size: 14px;
}

/* Roadmap Section */
.roadmap {
    background-color: var(--bg-color);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    background-color: var(--accent-color);
    border-radius: 50%;
    top: 20px;
    z-index: 1;
}

.timeline-item:nth-child(odd)::after {
    right: -12.5px;
}

.timeline-item:nth-child(even)::after {
    left: -12.5px;
}

/* Contact Section */
.contact {
    background-color: white;
    text-align: center;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.social-links {
    margin-top: 30px;
}

.social-links a {
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border-radius: 50%;
    margin: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background-color 0.3s ease;
    font-size: 20px;
}

.social-links a:hover {
    background-color: var(--accent-color);
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 30px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--light-text);
    margin: 0 10px;
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

.github-link {
    background-color: var(--accent-color);
    color: var(--light-text);
    padding: 8px 20px;
    border-radius: 5px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: background-color 0.3s ease;
}

.github-link span {
    margin-left: 8px;
}

.github-link:hover {
    background-color: #d32f2f;
}

/* Media Queries */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item:nth-child(odd)::after,
    .timeline-item:nth-child(even)::after {
        left: 18px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        margin-top: 20px;
    }
}