/* Column Page Styles */

/* Hero */
.column-hero {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    text-align: center;
}

.column-hero-title {
    font-size: 40px;
    font-weight: 900;
    color: white;
    margin-bottom: 16px;
}

.column-hero-description {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
}

/* Main */
.column-main {
    padding: 60px 0 100px;
    background: #f8fafc;
}

/* Column Grid */
.column-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

/* Column Card */
.column-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.column-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.column-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.column-card-thumb {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.column-card-emoji {
    font-size: 64px;
}

.column-card-body {
    padding: 24px;
}

.column-card-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 12px;
}

.column-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    line-height: 1.5;
    margin-bottom: 12px;
}

.column-card-excerpt {
    font-size: 14px;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 16px;
}

.column-card-date {
    font-size: 13px;
    color: #94a3b8;
}

/* Article Page */
.article-main {
    padding: 120px 0 80px;
    background: #f8fafc;
}

.article-container {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 40px;
}

.article-category {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
}

.article-title {
    font-size: 32px;
    font-weight: 900;
    color: #1a1a2e;
    line-height: 1.4;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: #64748b;
}

.article-content {
    background: white;
    padding: 48px;
    border-radius: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.article-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-top: 48px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #e2e8f0;
}

.article-content h2:first-child {
    margin-top: 0;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
    margin-top: 32px;
    margin-bottom: 16px;
}

.article-content p {
    font-size: 16px;
    color: #475569;
    line-height: 2;
    margin-bottom: 24px;
}

.article-content ul,
.article-content ol {
    margin: 24px 0;
    padding-left: 24px;
}

.article-content li {
    font-size: 16px;
    color: #475569;
    line-height: 2;
    margin-bottom: 8px;
}

.article-content strong {
    color: #1a1a2e;
    font-weight: 600;
}

.article-content blockquote {
    margin: 32px 0;
    padding: 24px 32px;
    background: #f8fafc;
    border-left: 4px solid #6366f1;
    border-radius: 0 12px 12px 0;
}

.article-content blockquote p {
    margin-bottom: 0;
    font-style: italic;
}

/* Info Box */
.info-box {
    margin: 32px 0;
    padding: 24px;
    background: #eff6ff;
    border-radius: 12px;
    border-left: 4px solid #3b82f6;
}

.info-box-title {
    font-size: 16px;
    font-weight: 700;
    color: #1e40af;
    margin-bottom: 8px;
}

.info-box p {
    margin-bottom: 0;
    color: #1e40af;
}

/* Warning Box */
.warning-box {
    margin: 32px 0;
    padding: 24px;
    background: #fffbeb;
    border-radius: 12px;
    border-left: 4px solid #f59e0b;
}

.warning-box-title {
    font-size: 16px;
    font-weight: 700;
    color: #92400e;
    margin-bottom: 8px;
}

.warning-box p {
    margin-bottom: 0;
    color: #92400e;
}

/* Article Footer */
.article-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid #e2e8f0;
}

.article-back {
    text-align: center;
}

/* Related Articles */
.related-articles {
    margin-top: 60px;
}

.related-title {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 24px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

/* Article Table */
.article-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article-table th,
.article-table td {
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    text-align: left;
}

.article-table th {
    background: #f8fafc;
    font-weight: 600;
    color: #1a1a2e;
}

.article-table td {
    color: #475569;
}

.article-table tr:hover td {
    background: #f8fafc;
}

/* Checklist */
.checklist {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    background: #f8fafc;
    border-radius: 12px;
    padding: 24px 32px;
}

.checklist li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 12px;
    font-size: 15px;
    color: #475569;
}

.checklist li::before {
    content: "☐";
    position: absolute;
    left: 0;
    color: #6366f1;
    font-size: 18px;
}

/* Article Summary */
.article-summary {
    margin-top: 32px;
    padding: 24px 32px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 12px;
    border-left: 4px solid #6366f1;
}

.article-summary p {
    margin-bottom: 16px;
}

.article-summary ul {
    margin: 0;
    padding-left: 20px;
}

.article-summary li {
    margin-bottom: 8px;
    color: #1a1a2e;
}

/* Responsive */
@media (max-width: 768px) {
    .column-hero {
        padding: 120px 0 40px;
    }

    .column-hero-title {
        font-size: 28px;
    }

    .column-hero-description {
        font-size: 15px;
    }

    .column-main {
        padding: 40px 0 60px;
    }

    .column-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 0 16px;
    }

    .column-card-title {
        font-size: 16px;
    }

    .article-main {
        padding: 100px 0 60px;
    }

    .article-container {
        padding: 0 16px;
    }

    .article-title {
        font-size: 24px;
    }

    .article-content {
        padding: 32px 24px;
    }

    .article-content h2 {
        font-size: 20px;
    }

    .article-content h3 {
        font-size: 18px;
    }

    .article-content p,
    .article-content li {
        font-size: 15px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }
}