/* Global Styles */
:root {
    --primary-color: #101c2f;
    --secondary-color: #1a2636;
    --accent-color: #4f8bc9;
    --bg-color: #f7f7f7;
    --text-color: #333;
    --light-gray: #e6e6e6;
    --dark-gray: #555;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    height: 70px;
}

.logo {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    transition: opacity 0.2s;
    cursor: pointer;
}

.logo:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    position: relative;
    transition: color 0.2s;
    font-size: 0.95rem;
}

.nav-links a.active {
    color: var(--primary-color);
    font-weight: 600;
}

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

.icon {
    width: 20px;
    height: 20px;
    transition: opacity 0.2s;
    color: var(--dark-gray);
}

.nav-links a:hover .icon {
    opacity: 0.8;
}

/* Main Content */
main {
    padding-top: 120px;
    padding-bottom: 60px;
    min-height: 90vh;
}

.home-content, .about-content {
    max-width: 800px;
    margin: 0 auto;
}

h1 {
    font-size: 2.2rem;
    margin-bottom: 30px;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: -0.5px;
    line-height: 1.2;
    position: relative;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--light-gray);
}

p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: var(--text-color);
    line-height: 1.7;
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 20px 0 30px;
    max-width: 90%;
}

/* Card design */
.info-card {
    background-color: var(--white);
    border-radius: 4px;
    padding: 30px;
    margin: 20px 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* About page */
.about-content {
    line-height: 1.8;
}

.about-content a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

.about-content a:hover {
    opacity: 0.8;
}

/* Footer */
footer {
    background-color: var(--white);
    color: var(--dark-gray);
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--light-gray);
}

footer p {
    color: var(--dark-gray);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .nav-links {
        gap: 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    main {
        padding-top: 100px;
    }
    
    .info-card {
        padding: 25px;
    }
}

@media (max-width: 640px) {
    nav {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
        gap: 15px;
    }
    
    .nav-links {
        width: 100%;
        justify-content: space-between;
        gap: 10px;
    }
    
    h1 {
        font-size: 1.8rem;
        text-align: center;
        width: 100%;
    }
    
    .hero {
        align-items: center;
        text-align: center;
        padding: 10px 0;
        max-width: 100%;
    }
    
    main {
        padding-top: 120px;
    }
    
    .info-card {
        padding: 20px;
        margin: 15px 0;
    }
    
    p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }
    
    .nav-links a {
        font-size: 0.9rem;
    }
    
    h1 {
        font-size: 1.6rem;
    }
    
    .info-card {
        padding: 15px;
    }
}