/* 아이잘한다 블로그 전용 스타일 (목록·글·카테고리 공통)
 * 메인사이트 design token (style.css)을 가정.
 */

/* ── Hero ── */
.blog-hero {
    padding: 5.5rem 0 1.5rem;
    background: linear-gradient(180deg, var(--color-surface-soft) 0%, var(--color-canvas) 100%);
    text-align: center;
}
.blog-page-title {
    font-size: 2rem;
    margin: 0.5rem 0;
    color: var(--color-text);
}
.blog-lead {
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--color-text-muted);
    margin: 0;
}
@media (max-width: 600px) {
    .blog-hero { padding: 5rem 0 1rem; }
    .blog-page-title { font-size: 1.5rem; }
}

/* ── 카테고리 탭 ── */
.blog-container { padding-bottom: 6rem; }

.blog-cats {
    display: flex;
    gap: 0.25rem;
    border-bottom: 2px solid var(--color-hairline);
    margin: 1rem 0 2rem;
    overflow-x: auto;
    scrollbar-width: none;
}
.blog-cats::-webkit-scrollbar { display: none; }
.blog-cat-tab {
    flex-shrink: 0;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.15s, border-color 0.15s;
    white-space: nowrap;
}
.blog-cat-tab:hover { color: var(--color-text); }
.blog-cat-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ── 글 카드 그리드 ── */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.blog-card {
    background: var(--color-canvas);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-hairline);
    overflow: hidden;
    text-decoration: none;
    color: var(--color-text);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}
.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
}
.card-thumb {
    aspect-ratio: 16 / 9;
    background: var(--color-surface-soft);
    border-bottom: 1px solid var(--color-hairline);
    overflow: hidden;
}
.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.25s ease;
}
.blog-card:hover .card-thumb img { transform: scale(1.05); }
.card-thumb-blank {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--color-text-muted);
}
.card-body { padding: 1rem 1.125rem 1.25rem; display: flex; flex-direction: column; gap: 0.375rem; }
.card-cat { font-size: 0.78rem; font-weight: 700; color: var(--color-primary); }
.card-title { font-size: 1.05rem; font-weight: 700; margin: 0; line-height: 1.35; }
.card-excerpt { font-size: 0.875rem; color: var(--color-text-muted); margin: 0; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-date { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 0.25rem; }

@media (max-width: 1024px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .blog-grid { grid-template-columns: 1fr; gap: 1rem; }
}

.blog-empty {
    padding: 4rem 1rem;
    text-align: center;
    color: var(--color-text-muted);
    background: var(--color-surface-soft);
    border-radius: var(--radius-md);
}

/* ── 개별 글 페이지 ──
 * 폭 기준: 독서 표준형 — 본문 텍스트 680px (한 줄 한글 35~40자, 2026-07-15 확정) */
.blog-post {
    max-width: 680px;
    margin: 4rem auto 6rem;
    padding: 0 1.25rem;
}
.post-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}
.post-category {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: none;
}
.post-category:hover { text-decoration: underline; }
.post-title {
    font-size: 1.75rem;
    line-height: 1.3;
    margin: 0 0 1.5rem;
    color: var(--color-text);
    word-break: keep-all;
}
.post-cover {
    margin: 0 0 2rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.post-cover img { width: 100%; height: auto; display: block; }

.post-body {
    font-size: 17px; /* 독서 표준형: 680px 폭 + 17px + 행간 1.8 */
    line-height: 1.8;
    color: var(--color-text);
    word-break: keep-all;       /* 한글 단어 단위 줄바꿈 */
    overflow-wrap: break-word;  /* 긴 URL·영단어 넘침 보호 */
}
.post-body > * + * { margin-top: 1.5em; }
.post-body h2 { font-size: 1.4rem; margin-top: 3rem; }
.post-body h3 { font-size: 1.2rem; margin-top: 2.25rem; }
.post-body img { max-width: 100%; height: auto; border-radius: var(--radius-md); display: block; margin: 2rem auto; }
.post-body figure { margin: 2rem 0; }
.post-body figure img { margin: 0 auto; }
.post-body figcaption {
    margin-top: 0.625rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}
.post-body hr {
    border: 0;
    border-top: 1px solid var(--color-hairline);
    width: 3rem;
    margin: 3rem auto;
}
.post-body iframe { width: 100%; aspect-ratio: 16 / 9; height: auto; border: 0; border-radius: var(--radius-md); margin: 1.25rem 0; }
.post-body blockquote {
    margin: 1.25rem 0;
    padding: 0.5rem 1.25rem;
    border-left: 4px solid var(--color-primary);
    color: var(--color-text-muted);
    background: var(--color-surface-soft);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.post-body pre {
    background: #0f172a;
    color: #f1f5f9;
    padding: 1rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-size: 0.875rem;
}
.post-body code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    background: var(--color-surface-soft);
    padding: 0.1em 0.4em;
    border-radius: 4px;
    font-size: 0.92em;
}
.post-body pre code { background: transparent; padding: 0; }
.post-body a { color: var(--color-primary); }
.post-body ul, .post-body ol { padding-left: 1.5rem; }
.post-body li + li { margin-top: 0.25rem; }
.post-body table { width: 100%; border-collapse: collapse; }
.post-body table th, .post-body table td { border: 1px solid var(--color-hairline); padding: 0.5rem 0.75rem; text-align: left; }
.post-body table th { background: var(--color-surface-soft); }

.post-footer {
    margin-top: 4rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-hairline);
}
.back-to-list {
    display: inline-block;
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 600;
}
.back-to-list:hover { color: var(--color-primary); }

@media (max-width: 600px) {
    .post-title { font-size: 1.5rem; }
    /* 본문 17px는 모바일에서도 동일 유지 */
    .blog-post { margin: 3rem auto 5rem; }
}