/* ============================================================
 * app.css
 * tokens.css(:root) + 목업 @layer components 의 순수 CSS 변환
 * ============================================================ */
:root {
  --color-accent: #5E81AC; --color-accent-bright: #88C0D0; --color-accent-soft: #E3EBF3;
  --color-ink: #2E3440; --color-ink-2: #434C5E; --color-ink-3: #4C566A; --color-ink-4: #9AA5B5;
  --color-paper: #ffffff; --color-bg: #E5E9F0; --color-paper-warm: #ECEFF4;
  --color-line: #D8DEE9; --color-line-soft: #E9EDF3;
  --color-success: #A3BE8C; --color-danger: #BF616A; --color-caution: #EBCB8B;
  --color-code-bg: #2E3440; --color-prose: #27272a;
  --font-sans: 'Pretendard Variable', Pretendard, -apple-system, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  --radius: 6px; --radius-lg: 12px; --radius-pill: 999px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--font-sans); color: var(--color-ink); background: var(--color-bg); line-height: 1.6; }
a { color: var(--color-accent); }
::selection { background: var(--color-accent-soft); }

/* layout */
.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }
main.container { padding-top: 32px; padding-bottom: 48px; }
.site-header { background: var(--color-paper); border-bottom: 1px solid var(--color-line); }
.site-footer { background: var(--color-paper); border-top: 1px solid var(--color-line); color: var(--color-ink-3); margin-top: 48px; }
.site-footer .container { padding-top: 20px; padding-bottom: 20px; font-size: 13px; }

/* header nav */
.site-header .nav { display: flex; align-items: center; gap: 20px; height: 60px; }
.brand { font-weight: 700; font-size: 18px; color: var(--color-ink); text-decoration: none; letter-spacing: -0.02em; }
.brand .dot { color: var(--color-accent); }
.nav-link { font-size: 14px; font-weight: 500; color: var(--color-ink-2); text-decoration: none; }
.nav-link:hover { color: var(--color-ink); }
.nav-spacer { margin-left: auto; }
.nav-user { font-size: 13px; color: var(--color-ink-3); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: var(--radius-pill); background: var(--color-accent); color: #fff; font-size: 13px; font-weight: 500; line-height: 1; border: none; cursor: pointer; text-decoration: none; transition: opacity .15s; }
.btn:hover { opacity: .85; }
.btn-ghost { background: transparent; color: var(--color-ink); border: 1px solid var(--color-line); }
.btn-ghost:hover { background: var(--color-paper-warm); opacity: 1; }
.btn-danger { background: var(--color-danger); }

/* chips / badges */
.chip { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 500; line-height: 1; background: var(--color-accent-soft); color: var(--color-accent); text-decoration: none; }
.chip:hover { opacity: .85; }
.chip.is-active { background: var(--color-accent); color: #fff; }

/* category filter menu */
.category-menu { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }

/* search */
.search-form { display: flex; gap: 8px; margin: 0 0 24px; }
.search-form input { flex: 1; padding: 10px 12px; border: 1px solid var(--color-line); border-radius: var(--radius); font-family: var(--font-sans); font-size: 15px; color: var(--color-ink); background: var(--color-paper); }
.search-form input:focus { outline: none; border-color: var(--color-accent); }
.empty { color: var(--color-ink-3); padding: 24px 0; }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: var(--radius); font-size: 11px; font-weight: 600; line-height: 1.5; }
.badge-accent { background: var(--color-accent-soft); color: var(--color-accent); }

/* cover */
.cover { position: relative; overflow: hidden; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.9); font-weight: 600; }

/* page title */
.page-title { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 24px; }

/* post list (card grid) */
.post-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.post-list li { background: var(--color-paper); border: 1px solid var(--color-line); border-radius: var(--radius-lg); padding: 22px; }
.post-list h2 { margin: 0 0 8px; font-size: 19px; letter-spacing: -0.02em; }
.post-list h2 a { color: var(--color-ink); text-decoration: none; }
.post-list h2 a:hover { color: var(--color-accent); }
.post-list p { margin: 0 0 14px; color: var(--color-ink-2); }
.post-list time { font-family: var(--font-mono); font-size: 12px; color: var(--color-ink-3); }
.post-list li { padding: 0; overflow: hidden; }
.post-list .post-summary { padding: 22px; }
.post-list .post-thumb { display: block; }
.post-list .post-thumb img { width: 100%; height: 160px; object-fit: cover; display: block; }
@media (max-width: 640px) { .post-list { grid-template-columns: 1fr; } }

/* post images */
.post-cover { width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--radius-lg); margin: 8px 0 8px; }
.image-current { max-width: 240px; border-radius: var(--radius); display: block; margin-bottom: 8px; }
input[type=file] { font-size: 14px; color: var(--color-ink-2); }

/* single post */
.post { max-width: 720px; margin: 0 auto; }
.post > h1 { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 12px; }
.post > time { font-family: var(--font-mono); font-size: 13px; color: var(--color-ink-3); }
.post-body { font-size: 18px; line-height: 1.8; color: var(--color-prose); margin-top: 24px; }
.post-actions { display: flex; gap: 10px; align-items: center; margin-top: 32px; }

/* prose (마크다운 본문, ep26 대비) */
.prose { font-size: 18px; line-height: 1.8; color: var(--color-prose); }
.prose p { margin: 24px 0; }
.prose h2 { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 48px 0 18px; color: var(--color-ink); }
.prose blockquote { margin: 32px 0; padding-left: 24px; border-left: 3px solid var(--color-accent); font-size: 20px; line-height: 1.6; font-style: italic; }
.prose pre { margin: 20px 0; border-radius: 8px; padding: 16px 18px; overflow-x: auto; font-size: 13px; line-height: 1.65; font-family: var(--font-mono); background: var(--color-code-bg); color: #ECEFF4; }

/* forms (editor tone) */
.form { max-width: 720px; margin: 0 auto; }
.form > div { margin-bottom: 18px; }
label { display: block; font-size: 13px; font-weight: 600; color: var(--color-ink-2); margin-bottom: 6px; }
input[type=text], textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--color-line); border-radius: var(--radius); font-family: var(--font-sans); font-size: 15px; color: var(--color-ink); background: var(--color-paper); }
input[type=text]:focus, textarea:focus { outline: none; border-color: var(--color-accent); }
textarea { resize: vertical; line-height: 1.7; }
.form-errors { list-style: none; margin: 0 0 18px; padding: 12px 16px; border-radius: var(--radius); background: rgba(191,97,106,.12); color: var(--color-danger); }
.field-hint { font-size: 12px; color: var(--color-ink-3); margin: 0 0 8px; }
.field-hint code { background: var(--color-paper-warm); padding: 1px 5px; border-radius: 4px; font-family: var(--font-mono); font-size: 11px; }

/* flash message (1회성 성공 알림) */
.flash { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 20px; font-size: 14px; background: var(--color-accent-soft); color: var(--color-accent); }

/* pagination (CI4 기본 pager 마크업: nav>ul.pagination) */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 36px; list-style: none; padding: 0; }
.pagination li a, .pagination li.active span { display: inline-flex; align-items: center; padding: 6px 12px; border-radius: var(--radius); border: 1px solid var(--color-line); text-decoration: none; color: var(--color-ink-2); font-size: 14px; }
.pagination li.active span { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }
.pagination li.disabled span { display: inline-flex; padding: 6px 12px; color: var(--color-ink-4); }

/* comments */
.comments { max-width: 720px; margin: 48px auto 0; border-top: 1px solid var(--color-line); padding-top: 28px; }
.comments-title { font-size: 18px; font-weight: 700; margin: 0 0 20px; }
.comments-empty { color: var(--color-ink-3); }
.comment-list { list-style: none; padding: 0; margin: 0; }
.comment { padding: 16px 0; border-bottom: 1px solid var(--color-line-soft); }
.comment-meta { display: flex; gap: 10px; align-items: baseline; margin-bottom: 6px; }
.comment-author { font-weight: 600; font-size: 14px; color: var(--color-ink); }
.comment-meta time { font-family: var(--font-mono); font-size: 12px; color: var(--color-ink-3); }
.comment-body { color: var(--color-prose); line-height: 1.7; }
.comment-form { margin-top: 24px; }
.comment-form textarea { margin-bottom: 10px; }
.comment-login { margin-top: 24px; color: var(--color-ink-3); }
.comment-delete { margin-left: auto; background: none; border: none; padding: 0; font-size: 12px; color: var(--color-ink-4); cursor: pointer; }
.comment-delete:hover { color: var(--color-danger); }