/* Global Settings */
body {
    font-family: 'Nanum Gothic', 'Malgun Gothic', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #e0e0e0;
    background-color: #333333;
    margin: 0;
    padding: 0;
}

a {
    color: #81d4fa;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #4fc3f7;
    text-decoration: underline;
}

.gold {
    color: #ffd700;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.page-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.page-header h1 {
    margin-top: 0;
    font-size: 2em;
}

.intro-text {
    margin: 20px 0;
    color: #bdbdbd;
}

.update-note {
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 8px;
    text-align: left;
    margin-top: 20px;
    font-size: 0.9em;
}

.update-note strong {
    display: block;
    margin-bottom: 10px;
    color: #ffd700;
}

.update-note ul {
    margin: 0;
    padding-left: 20px;
}

/* Archive Grid */
.archive-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Archive Card */
.archive-card {
    background: #424242;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #555;
}

.archive-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.4);
    border-color: #777;
}

.archive-card h2 {
    margin-top: 0;
    font-size: 1.4em;
    border-bottom: 1px solid #666;
    padding-bottom: 10px;
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.archive-card .date {
    font-size: 0.6em;
    color: #9e9e9e;
    font-weight: normal;
    background: rgba(0, 0, 0, 0.2);
    padding: 4px 8px;
    border-radius: 4px;
}

.card-content {
    color: #d0d0d0;
}

.card-content ul,
.card-content ol {
    padding-left: 20px;
    margin-top: 10px;
}

.card-content li {
    margin-bottom: 5px;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    color: #757575;
    font-size: 0.9em;
    margin-top: 40px;
    border-top: 1px solid #444;
}

/* Iframe Container */
.iframe_container {
    width: 100%;
    max-width: 150px;
    height: 200px;
    overflow: hidden;
    margin-bottom: 15px;
    border: 1px solid #666;
    border-radius: 4px;
}

.iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    .archive-card {
        padding: 15px;
    }

    .archive-card h2 {
        font-size: 1.2em;
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
}