:root {
    --primary-color: #2d5f4a;
    --secondary-color: #3a7a5d;
    --accent-color: #8ab17d;
    --text-color: #333;
    --light-bg: #f8faf7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    line-height: 1.8;
    color: var(--text-color);
}

.header {
    background: var(--primary-color);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-list {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 2rem;
}

.nav-list a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-list a:hover {
    color: var(--secondary-color);
}

.section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2, h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-content {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.timeline {
    position: relative;
    padding-left: 2rem;
    margin-top: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--secondary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--accent-color);
    border-radius: 50%;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.fas, .ai {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .section {
        padding: 2rem 1rem;
    }

    .timeline {
        padding-left: 1rem;
    }
}