:root {
    --gemini-blue: #4285f4;
    --gemini-gradient: linear-gradient(135deg, #4285f4, #9b72cb, #d96570);
    --text-primary: #3c4043;
    --text-secondary: #5f6368;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #e0e0e0;
}

body {
    font-family: 'Pretendard', sans-serif;
    background: var(--bg-secondary);
    margin: 0;
    padding-top: 80px; /* Space for the fixed header */
    color: var(--text-primary);
}

.main-header {
    background: var(--bg-primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 960px;
    height: 60px;
    padding: 0 20px;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    background: var(--gemini-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.main-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    align-items: center;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 16px;
    transition: color 0.3s;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
}

.content-wrapper {
    max-width: 960px;
    margin: 40px auto;
    padding: 0 20px;
}