/* 홍길동 수학교습소 site main styles
   Fonts: Pretendard + Poppins for KR/EN, Noto Sans JP for JP, Noto Sans SC for CN
   Loaded via header.php (Google Fonts + CDN Pretendard)                       */

:root {
  --c-bg: #ffffff;
  --c-fg: #1a1f2e;
  --c-muted: #6c7383;
  --c-line: #e6e8ee;
  --c-line-2: #f2f4f8;
  --c-primary: #0b3d91;
  --c-primary-2: #1054c4;
  --c-accent: #f5a623;
  --c-danger: #d9333f;
  --c-ok: #2faa6c;
  --c-card: #ffffff;
  --c-tag: #eef3fd;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(10,20,40,.06), 0 1px 2px rgba(10,20,40,.04);
  --shadow-md: 0 10px 30px rgba(10,20,40,.08), 0 2px 6px rgba(10,20,40,.04);
  --header-h: 64px;
  --max-w: 1200px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  color: var(--c-fg);
  background: #fbfcfe;
  font-family: "Poppins", "Pretendard", system-ui, -apple-system, "Segoe UI", Roboto, "Apple SD Gothic Neo", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Language-specific fonts — most-used safe family per region */
body.lang-jp {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  font-weight: 400;
}
body.lang-cn {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Heiti SC", system-ui, sans-serif;
  font-weight: 400;
}
body.lang-kr {
  font-family: "Pretendard", "Poppins", system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}
body.lang-th {
  font-family: "Noto Sans Thai", "Sarabun", "Tahoma", system-ui, sans-serif;
  font-weight: 400;
}
body.lang-ru {
  font-family: "Pretendard", "Roboto", "Inter", "PT Sans", "Segoe UI", system-ui, sans-serif;
}
body.lang-vi {
  /* Vietnamese needs full Latin-Extended-Additional + tone marks support */
  font-family: "Pretendard", "Be Vietnam Pro", "Roboto", "Inter", system-ui, sans-serif;
}
body.lang-fr, body.lang-de, body.lang-es {
  /* Latin-script European languages — Pretendard handles diacritics well */
  font-family: "Pretendard", "Poppins", "Inter", "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.25; letter-spacing: -.01em; }
.muted { color: var(--c-muted); }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 720px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-line);
}
.site-header .container {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-weight: 700; font-size: 20px; letter-spacing: -.02em;
  color: var(--c-fg) !important;
}
.primary-nav { display: flex; gap: 22px; }
.primary-nav a {
  color: var(--c-fg);
  font-weight: 500;
  font-size: 15px;
}
.primary-nav a:hover { color: var(--c-primary); text-decoration: none; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-switcher { position: relative; }
.lang-btn {
  background: var(--c-line-2); border: 1px solid var(--c-line);
  border-radius: var(--radius-sm); padding: 6px 12px; font-weight: 500;
  font-size: 14px; cursor: pointer; color: var(--c-fg);
}
.lang-switcher ul {
  position: absolute; right: 0; top: 100%; margin-top: 6px;
  list-style: none; padding: 6px; min-width: 140px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  box-shadow: var(--shadow-md); display: none;
}
.lang-switcher:hover ul, .lang-switcher:focus-within ul { display: block; }
.lang-switcher li a { display: block; padding: 8px 10px; border-radius: 4px; color: var(--c-fg); }
.lang-switcher li a:hover { background: var(--c-line-2); text-decoration: none; }

.nav-toggle {
  display: none; background: transparent; border: 0;
  width: 36px; height: 36px; padding: 8px; flex-direction: column; gap: 4px; cursor: pointer;
}
.nav-toggle span { display: block; width: 100%; height: 2px; background: var(--c-fg); border-radius: 2px; }

/* Hero */
.hero {
  padding: 80px 0 64px;
  background: linear-gradient(160deg, #f1f5fd 0%, #fafbfe 60%);
  border-bottom: 1px solid var(--c-line);
}
.hero-title {
  font-size: clamp(34px, 5.5vw, 56px);
  font-weight: 700;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle { font-size: 18px; color: var(--c-muted); max-width: 640px; }
.hero-cta { display: flex; gap: 10px; margin-top: 24px; flex-wrap: wrap; }

/* Buttons */
.btn, .btn-primary, .btn-ghost, .btn-danger {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 18px; font-size: 14px; font-weight: 500;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  text-decoration: none; cursor: pointer;
  transition: transform .08s ease, box-shadow .15s, background .15s;
  font-family: inherit;
}
.btn { background: #fff; border-color: var(--c-line); color: var(--c-fg); }
.btn:hover { background: var(--c-line-2); text-decoration: none; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-2); color: #fff; text-decoration: none; }
.btn-ghost { background: transparent; border-color: var(--c-primary); color: var(--c-primary); }
.btn-ghost:hover { background: var(--c-primary); color: #fff; text-decoration: none; }
.btn-danger { background: var(--c-danger); color: #fff; }
.btn-danger:hover { background: #b8262f; }
.btn.small { padding: 5px 10px; font-size: 12px; }

/* Cards / sections */
.two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  padding: 56px 20px;
}
.card {
  background: var(--c-card); border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-head h2 { font-size: 20px; margin: 0; }
.link { color: var(--c-primary); font-size: 14px; font-weight: 500; }

.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--c-line-2);
}
.post-list li:last-child { border-bottom: 0; }
.post-list a { color: var(--c-fg); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.post-list time { color: var(--c-muted); font-size: 13px; flex-shrink: 0; }

.feature-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px;
  padding: 56px 20px 80px;
}
.feature-tile {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 28px 12px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  color: var(--c-fg); transition: all .2s;
}
.feature-tile:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-primary);
}
.ft-icon { font-size: 28px; }
.ft-title { font-size: 13px; font-weight: 500; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--c-line);
  padding: 32px 0;
  margin-top: 80px;
  text-align: center;
  background: #fff;
  color: var(--c-muted);
  font-size: 14px;
}
.footer-links a { color: var(--c-muted); margin: 0 4px; }

/* Board */
.board-page { padding: 40px 20px 80px; }
.board-head {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  padding-bottom: 18px; margin-bottom: 24px;
  border-bottom: 2px solid var(--c-fg);
}
.board-title { font-size: 28px; margin: 0; font-weight: 700; }
.board-desc { margin: 0; color: var(--c-muted); }
.board-tools { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.search { display: flex; gap: 4px; }
.search input { padding: 7px 10px; border: 1px solid var(--c-line); border-radius: var(--radius-sm); }
.search button {
  padding: 7px 14px; background: var(--c-fg); color: #fff; border: 0;
  border-radius: var(--radius-sm); cursor: pointer; font-family: inherit;
}

.board-table { width: 100%; border-collapse: collapse; }
.board-table thead { background: var(--c-line-2); }
.board-table th, .board-table td {
  padding: 12px 8px; text-align: left; border-bottom: 1px solid var(--c-line);
  font-size: 14px;
}
.board-table th { font-weight: 600; font-size: 13px; color: var(--c-muted); text-transform: uppercase; letter-spacing: .04em; }
.board-table .num-col, .board-table .meta-col, .board-table .adm-col { width: 1%; white-space: nowrap; }
.board-table .subj a { color: var(--c-fg); font-weight: 500; }
.board-table .subj a:hover { color: var(--c-primary); }
.board-table tr.notice-row { background: #fff8e8; }
.board-table .empty { text-align: center; color: var(--c-muted); padding: 40px 0; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--c-tag); font-size: 11px; color: var(--c-primary); margin-left: 4px; }

.admin-bulk { margin-top: 14px; padding: 10px 14px; background: #fff8e8; border-radius: var(--radius-sm); display: flex; gap: 10px; align-items: center; }
.pager { display: flex; gap: 4px; justify-content: center; margin-top: 24px; flex-wrap: wrap; }
.pager a {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px; padding: 0 10px;
  border: 1px solid var(--c-line); border-radius: var(--radius-sm);
  color: var(--c-fg); font-size: 14px;
}
.pager a.on { background: var(--c-fg); color: #fff; border-color: var(--c-fg); }
.pager a:hover { background: var(--c-line-2); text-decoration: none; }

/* Photo grid */
.photo-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px;
}
.photo-card { position: relative; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; transition: all .2s; }
.photo-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--c-primary); }
.photo-check { position: absolute; top: 8px; left: 8px; z-index: 2; background: rgba(255,255,255,.9); border-radius: 4px; padding: 2px 4px; }
.photo-thumb {
  width: 100%; aspect-ratio: 4/3; background-size: cover; background-position: center;
  background-color: var(--c-line-2);
}
.photo-meta { padding: 12px; }
.photo-title { font-weight: 500; font-size: 14px; color: var(--c-fg); margin-bottom: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.photo-sub { color: var(--c-muted); font-size: 12px; }

/* Calendar */
.calendar { width: 100%; border-collapse: separate; border-spacing: 2px; }
.calendar th { background: var(--c-line-2); padding: 8px; font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.calendar th.sun { color: var(--c-danger); }
.calendar th.sat { color: var(--c-primary); }
.calendar td { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-sm); vertical-align: top; padding: 6px; min-height: 90px; height: 90px; position: relative; }
.calendar td.empty { background: var(--c-line-2); border: 0; }
.calendar td.today { background: #f0f6ff; border-color: var(--c-primary); }
.calendar td .d { display: inline-block; font-size: 13px; color: var(--c-muted); font-weight: 600; margin-bottom: 4px; }
.calendar td.sun .d { color: var(--c-danger); }
.calendar td.sat .d { color: var(--c-primary); }
.cal-event { display: block; background: var(--c-primary); color: #fff !important; padding: 2px 6px; border-radius: 3px; font-size: 11px; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cal-event:hover { background: var(--c-primary-2); text-decoration: none; }
.cal-nav { display: flex; align-items: center; gap: 8px; font-weight: 600; }

/* Post view */
.post-view { padding: 40px 20px 80px; max-width: 900px; }
.crumbs { font-size: 13px; color: var(--c-muted); margin-bottom: 18px; }
.crumbs a { color: var(--c-muted); }
.post-head { padding-bottom: 20px; margin-bottom: 24px; border-bottom: 2px solid var(--c-fg); }
.post-head h1 { font-size: 30px; }
.post-meta { color: var(--c-muted); font-size: 14px; }
.event-bar { background: #fff8e8; padding: 10px 14px; border-radius: var(--radius-sm); margin: 0 0 16px; font-weight: 500; }
.post-body { font-size: 16px; line-height: 1.8; padding: 24px 0; min-height: 220px; }
.post-body img { border-radius: var(--radius-sm); margin: 12px 0; }
.attachments-block { background: var(--c-line-2); padding: 16px; border-radius: var(--radius); margin: 24px 0; }
.attachments-block h3 { font-size: 14px; margin: 0 0 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); }
.att-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.att-list li { display: flex; align-items: center; gap: 10px; padding: 6px 0; }
.att-thumb { width: 40px; height: 40px; object-fit: cover; border-radius: 4px; }
.post-actions { display: flex; gap: 10px; margin: 24px 0; flex-wrap: wrap; }
.prev-next { display: flex; justify-content: space-between; gap: 12px; padding: 20px 0; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.prev-next a { color: var(--c-fg); font-size: 14px; }
.comments { margin-top: 40px; }
.comments ul { list-style: none; padding: 0; margin: 0; }
.comments li { padding: 14px 0; border-bottom: 1px solid var(--c-line-2); }
.comments li strong { margin-right: 8px; }
.comments p { margin: 8px 0 0; }
.comment-form { display: flex; flex-direction: column; gap: 8px; margin-top: 20px; }
.comment-form input, .comment-form textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--c-line); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 14px;
}

/* Write form */
.post-write { padding: 40px 20px 80px; max-width: 900px; }
.write-form { display: flex; flex-direction: column; gap: 16px; }
.write-form label { display: flex; flex-direction: column; gap: 6px; font-weight: 500; font-size: 14px; }
.write-form input[type=text],
.write-form input[type=datetime-local],
.write-form textarea {
  padding: 10px 12px; border: 1px solid var(--c-line); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 15px;
}
.write-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.write-form fieldset.attachments { border: 1px dashed var(--c-line); padding: 16px; border-radius: var(--radius-sm); }
.write-form .file-row { margin: 6px 0; }
.write-form .form-actions { display: flex; gap: 10px; }

.alert { padding: 10px 14px; border-radius: var(--radius-sm); margin: 12px 0; font-size: 14px; }
.alert.ok  { background: #e6f7ee; color: #145a36; }
.alert.err { background: #fde6e8; color: #921c25; }

/* ====================================================================
   Webzine (웹진) — magazine-style skin
   ==================================================================== */
.webzine-page { padding: 32px 20px 80px; }

/* Masthead */
.wz-masthead {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding-bottom: 20px; margin-bottom: 28px;
  border-bottom: 3px double var(--c-fg);
}
.wz-masthead-text { flex: 1 1 300px; }
.wz-kicker {
  font-size: 12px; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--c-accent); margin-bottom: 8px;
}
.wz-title {
  font-size: clamp(28px, 4.2vw, 44px); font-weight: 800;
  letter-spacing: -.025em; margin: 0 0 8px;
  font-family: "Pretendard", "Playfair Display", Georgia, serif;
}
.wz-tagline { color: var(--c-muted); margin: 0; font-size: 15px; max-width: 640px; }
.wz-masthead-tools { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.wz-search input { min-width: 220px; }

/* Hero cover story */
.wz-hero {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 0;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; margin-bottom: 48px; color: var(--c-fg);
  box-shadow: var(--shadow-sm); transition: box-shadow .2s, transform .15s;
}
.wz-hero:hover { box-shadow: var(--shadow-md); text-decoration: none; transform: translateY(-2px); }
.wz-hero-image {
  position: relative;
  aspect-ratio: 4 / 3;
  background-size: cover; background-position: center;
  background-color: var(--c-line-2);
}
.wz-hero-badge {
  position: absolute; top: 18px; left: 18px;
  background: var(--c-fg); color: #fff;
  padding: 6px 12px; font-size: 11px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  border-radius: var(--radius-sm);
}
.wz-hero-body { padding: 36px 32px; display: flex; flex-direction: column; justify-content: center; gap: 12px; }
.wz-hero-title {
  font-size: clamp(22px, 2.6vw, 32px); font-weight: 700;
  margin: 0; line-height: 1.25; letter-spacing: -.02em;
  font-family: "Pretendard", "Playfair Display", Georgia, serif;
}
.wz-hero-excerpt { color: var(--c-muted); font-size: 15px; line-height: 1.7; margin: 0; }
.wz-meta { display: flex; gap: 6px; align-items: center; color: var(--c-muted); font-size: 13px; flex-wrap: wrap; }
.wz-meta strong { color: var(--c-fg); font-weight: 600; }
.wz-meta-small { display: flex; gap: 6px; align-items: center; color: var(--c-muted); font-size: 12px; flex-wrap: wrap; }
.wz-dot { opacity: .5; }

/* Section heading */
.wz-section { margin: 0 0 56px; }
.wz-section-head { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.wz-section-title {
  font-size: 13px; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--c-fg); margin: 0;
  white-space: nowrap;
}
.wz-section-rule { flex: 1; height: 1px; background: var(--c-line); }

/* Tags */
.wz-tag-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 4px; }
.wz-tag {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  background: var(--c-tag); color: var(--c-primary);
  font-size: 11px; font-weight: 600; letter-spacing: .04em;
  text-transform: uppercase;
}

/* Editor's picks — horizontal scroller on mobile, grid on desktop */
.wz-picks {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.wz-pick {
  display: flex; flex-direction: column; color: var(--c-fg);
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; transition: all .15s;
}
.wz-pick:hover {
  text-decoration: none; transform: translateY(-2px);
  border-color: var(--c-primary); box-shadow: var(--shadow-md);
}
.wz-pick-thumb {
  width: 100%; aspect-ratio: 16 / 10;
  background-size: cover; background-position: center;
  background-color: var(--c-line-2);
}
.wz-pick-body { padding: 14px 14px 16px; }
.wz-pick-title {
  font-size: 15px; font-weight: 600; line-height: 1.35;
  margin: 0 0 8px; letter-spacing: -.01em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Article grid */
.wz-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}
.wz-card {
  position: relative;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; transition: all .18s;
}
.wz-card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow-md);
  border-color: var(--c-primary);
}
.wz-card--notice { border-color: var(--c-accent); }
.wz-card-link { display: block; color: var(--c-fg); }
.wz-card-link:hover { text-decoration: none; }
.wz-card-thumb {
  position: relative;
  width: 100%; aspect-ratio: 16 / 10;
  background-size: cover; background-position: center;
  background-color: var(--c-line-2);
}
.wz-card-flag {
  position: absolute; top: 10px; left: 10px;
  padding: 4px 10px; font-size: 11px; font-weight: 700;
  border-radius: 4px; background: rgba(255,255,255,.95); color: var(--c-fg);
  letter-spacing: .04em;
}
.wz-card-flag--notice { background: var(--c-accent); color: #fff; }
.wz-card-body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 8px; }
.wz-card-title {
  font-size: 17px; font-weight: 700; line-height: 1.3;
  letter-spacing: -.015em; margin: 0;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: "Pretendard", "Playfair Display", Georgia, serif;
}
.wz-card-excerpt {
  font-size: 13.5px; color: var(--c-muted); line-height: 1.6; margin: 0;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.wz-check {
  position: absolute; top: 10px; right: 10px; z-index: 3;
  background: rgba(255,255,255,.95); border-radius: 4px; padding: 2px 6px;
}

.wz-empty {
  text-align: center; color: var(--c-muted);
  padding: 80px 20px; border: 1px dashed var(--c-line); border-radius: var(--radius);
  background: var(--c-line-2);
}

/* Stack hero on tablet & below */
@media (max-width: 860px) {
  .wz-hero { grid-template-columns: 1fr; }
  .wz-hero-image { aspect-ratio: 16 / 9; }
  .wz-hero-body { padding: 24px 22px 26px; }
  .wz-grid { gap: 22px; }
}
@media (max-width: 520px) {
  .wz-masthead { gap: 14px; padding-bottom: 16px; margin-bottom: 22px; }
  .wz-search input { min-width: 0; flex: 1; }
  .wz-section { margin-bottom: 40px; }
  .wz-picks { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
  .wz-grid { grid-template-columns: 1fr; }
}