:root {
    --primary-color: #e63946; /* Red for Red Sea */
    --secondary-color: #1d3557;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --gray: #6c757d;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

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);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.cta-button {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #c1121f;
}

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 4rem;
    min-height: 80vh;
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.hero p {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: #c1121f;
    border-color: #c1121f;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.hero-image {
    flex: 1;
}

.hero-image img {
    width: 100%;
    height: auto;
}

/* Features Section */
.features {
    background-color: var(--white);
    padding: 5rem 2rem;
}

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

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-title p {
    color: var(--gray);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: center;
}

.feature-card {
    padding: 2rem;
    border-radius: 10px;
    background-color: var(--bg-color);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: center;
}

.pricing-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    position: relative;
    border: 1px solid #eee;
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    z-index: 1;
}

.popular-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 1rem 0;
}

.price span {
    font-size: 1rem;
    color: var(--gray);
}

.plan-features {
    margin-bottom: 2rem;
    text-align: left;
}

.plan-features li {
    margin-bottom: 0.5rem;
    color: var(--gray);
}

/* Download */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.download-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s;
    display: block;
    color: inherit;
}

.download-card:hover {
    transform: translateY(-5px);
    color: var(--primary-color);
}

.download-card .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Content Block */
.content-block {
    padding: 5rem 2rem;
    display: flex;
    align-items: center;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.content-block.reverse {
    flex-direction: row-reverse;
}

.content-text {
    flex: 1;
}

.content-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.content-text ul {
    margin-top: 1.5rem;
}

.content-text li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.content-image {
    flex: 1;
}

.content-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col a {
    color: #ccc;
}

.footer-col a:hover {
    color: var(--white);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #ccc;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
        gap: 2rem;
    }
    
    .hero-image {
        width: 80%;
        margin: 0 auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .content-block {
        flex-direction: column;
    }
    
    .content-block.reverse {
        flex-direction: column;
    }
}