/* ═══════════════════════════════════════
   SAMPLE PAGES — 10 different UI styles
   ═══════════════════════════════════════ */

.sample-page {
  display: none;
  max-width: 1180px; margin: 0 auto;
  padding: 56px 24px 80px;
}
.sample-page .page-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; flex-wrap: wrap; margin-bottom: 36px;
}
.sample-page .page-title-block {
  display: flex; align-items: flex-start; gap: 14px;
}
.sample-page .page-title-block .accent {
  width: 4px; align-self: stretch; min-height: 56px;
  border-radius: 2px; margin-top: 6px;
}
.sample-page .page-title-block h1 {
  font-family: var(--font-serif-ko);
  font-style: normal;
  font-size: 42px; font-weight: 700;
  margin: 0 0 8px; line-height: 1.1; letter-spacing: -0.02em;
}
.sample-page .page-title-block p {
  font-size: 14.5px; color: var(--ink-500); margin: 0;
  max-width: 520px; line-height: 1.6;
}
.sample-label {
  display: inline-block;
  font-size: 11px; padding: 3px 10px;
  border-radius: var(--r-pill);
  font-weight: 600;
  margin-bottom: 12px;
}

/* ─── S1: Bento Grid ─── */
.s1-bento {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-auto-rows: minmax(140px, auto);
  gap: 14px;
}
.s1-cell {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 16px;
  padding: 22px;
  transition: all .2s;
  cursor: pointer;
  overflow: hidden;
}
.s1-cell:hover { box-shadow: 0 8px 30px rgba(20,18,14,.08); transform: translateY(-2px); }
.s1-cell.span2 { grid-column: span 2; }
.s1-cell.tall { grid-row: span 2; }
.s1-cell h3 { font-size: 15px; font-weight: 600; margin: 0 0 6px; }
.s1-cell .s1-tag { font-size: 11px; padding: 3px 8px; border-radius: var(--r-pill); font-weight: 500; }
.s1-cell .s1-count { font-size: 36px; font-weight: 700; margin: 12px 0 4px; }
.s1-cell .s1-sub { font-size: 12.5px; color: var(--ink-400); }
.s1-cell .s1-mini-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 14px;
}
.s1-mini-card {
  padding: 8px 10px; border-radius: 8px;
  font-size: 12px; font-weight: 500;
}

/* ─── S2: Kanban Board ─── */
.s2-board {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.s2-col {
  background: oklch(0.97 0.01 80 / 0.6);
  border-radius: 14px;
  padding: 16px;
  min-height: 400px;
}
.s2-col-head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 2px solid;
}
.s2-col-head h3 { font-size: 13.5px; font-weight: 600; margin: 0; }
.s2-col-head .s2-badge {
  font-size: 11px; padding: 2px 7px; border-radius: 6px;
  font-weight: 600; margin-left: auto;
}
.s2-item {
  background: var(--white);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 10px;
  border: 1px solid var(--ink-100);
  cursor: pointer;
  transition: box-shadow .15s;
}
.s2-item:hover { box-shadow: 0 4px 12px rgba(0,0,0,.06); }
.s2-item h4 { font-size: 13.5px; font-weight: 550; margin: 0 0 6px; }
.s2-item p { font-size: 12px; color: var(--ink-400); margin: 0; }
.s2-item .s2-chips { display: flex; gap: 4px; margin-top: 8px; flex-wrap: wrap; }
.s2-item .s2-chip { font-size: 10.5px; padding: 2px 7px; border-radius: var(--r-pill); font-weight: 500; }

/* ─── S3: Magazine Layout ─── */
.s3-hero-card {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 20px;
  overflow: hidden;
  display: grid; grid-template-columns: 1fr 1fr;
  margin-bottom: 20px;
}
.s3-hero-visual {
  padding: 50px 40px;
  display: flex; flex-direction: column; justify-content: center;
}
.s3-hero-visual h2 {
  font-family: var(--font-serif);
  font-size: 38px; font-style: italic;
  line-height: 1.1; margin: 0 0 12px;
}
.s3-hero-visual p { font-size: 15px; color: var(--ink-500); line-height: 1.6; }
.s3-hero-right {
  padding: 30px;
  border-left: 1px solid var(--ink-100);
}
.s3-list { list-style: none; padding: 0; margin: 0; }
.s3-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--ink-100);
  display: flex; align-items: center; gap: 14px;
  cursor: pointer;
  transition: padding-left .15s;
}
.s3-list li:hover { padding-left: 6px; }
.s3-list li:last-child { border-bottom: none; }
.s3-list .s3-num {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.s3-list .s3-info h4 { font-size: 14px; font-weight: 550; margin: 0 0 2px; }
.s3-list .s3-info span { font-size: 12px; color: var(--ink-400); }
.s3-bottom-cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.s3-bcard {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: 14px; padding: 24px 20px;
  transition: all .2s; cursor: pointer;
}
.s3-bcard:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.s3-bcard h3 { font-size: 16px; font-weight: 600; margin: 0 0 8px; }
.s3-bcard p { font-size: 13px; color: var(--ink-400); line-height: 1.5; margin: 0; }

/* ─── S4: Sidebar + Table ─── */
.s4-layout {
  display: grid; grid-template-columns: 240px 1fr; gap: 20px;
}
.s4-sidebar {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 14px;
  padding: 20px;
  position: sticky; top: 100px;
  align-self: start;
}
.s4-sidebar h3 {
  font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--ink-400);
  margin: 0 0 12px; font-weight: 600;
}
.s4-nav-item {
  padding: 10px 14px; border-radius: 8px;
  font-size: 14px; cursor: pointer;
  margin-bottom: 3px; transition: all .1s;
  display: flex; align-items: center; gap: 10px;
}
.s4-nav-item:hover { background: var(--paper-2); }
.s4-nav-item.active { background: var(--ink-900); color: var(--paper); }
.s4-nav-item .dot { width: 8px; height: 8px; border-radius: 50%; }
.s4-main-table {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: 14px; overflow: hidden;
}
.s4-main-table table { width: 100%; border-collapse: collapse; }
.s4-main-table th {
  text-align: left; padding: 14px 18px;
  font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--ink-400);
  background: oklch(0.98 0.005 80); font-weight: 600;
  border-bottom: 1px solid var(--ink-200);
}
.s4-main-table td {
  padding: 13px 18px; font-size: 14px;
  border-bottom: 1px solid var(--ink-100);
}
.s4-main-table tr:hover { background: oklch(0.98 0.01 80 / 0.5); }
.s4-main-table tr:last-child td { border-bottom: none; }

/* ─── S5: Spotlight Search ─── */
.s5-search-wrap {
  max-width: 680px; margin: 0 auto 32px;
}
.s5-search {
  background: var(--white);
  border: 2px solid var(--ink-200);
  border-radius: 16px;
  padding: 18px 22px;
  display: flex; align-items: center; gap: 14px;
  transition: border-color .2s;
  margin-bottom: 16px;
}
.s5-search:focus-within { border-color: var(--ink-500); }
.s5-search input {
  flex: 1; border: none; outline: none;
  font-size: 18px; font-family: var(--font-sans);
  background: none; color: var(--ink-900);
}
.s5-search input::placeholder { color: var(--ink-300); }
.s5-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 24px; }
.s5-results {
  max-width: 680px; margin: 0 auto;
}
.s5-result-item {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 16px;
  cursor: pointer;
  transition: all .15s;
}
.s5-result-item:hover { border-color: var(--ink-400); box-shadow: var(--shadow-card); }
.s5-result-num {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; flex-shrink: 0;
}
.s5-result-info { flex: 1; }
.s5-result-info h4 { font-size: 15px; font-weight: 600; margin: 0 0 4px; }
.s5-result-info span { font-size: 13px; color: var(--ink-400); }
.s5-result-arrow { color: var(--ink-300); font-size: 18px; }

/* ─── S6: Accordion ─── */
.s6-accordion {
  max-width: 800px; margin: 0 auto;
}
.s6-group {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 14px;
  margin-bottom: 10px;
  overflow: hidden;
}
.s6-group-head {
  padding: 18px 22px;
  display: flex; align-items: center; gap: 14px;
  cursor: pointer;
  transition: background .1s;
}
.s6-group-head:hover { background: oklch(0.98 0.01 80 / 0.5); }
.s6-group-head .s6-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
}
.s6-group-head h3 { font-size: 15.5px; font-weight: 600; margin: 0; flex: 1; }
.s6-group-head .s6-meta { font-size: 13px; color: var(--ink-400); }
.s6-group-head .s6-arrow {
  transition: transform .2s;
  color: var(--ink-400);
}
.s6-group.open .s6-arrow { transform: rotate(180deg); }
.s6-group-body {
  display: none;
  padding: 0 22px 18px;
  border-top: 1px solid var(--ink-100);
}
.s6-group.open .s6-group-body { display: block; }
.s6-lesson-list {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  padding-top: 14px;
}
.s6-lesson-item {
  padding: 10px 14px; border-radius: 8px;
  background: var(--paper-2);
  font-size: 13.5px;
  display: flex; align-items: center; gap: 8px;
  cursor: pointer;
  transition: background .1s;
}
.s6-lesson-item:hover { background: var(--ink-100); }
.s6-lesson-item input[type="checkbox"] {
  accent-color: var(--sage-ink);
}

/* ─── S7: Dashboard Widgets ─── */
.s7-widgets {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
.s7-widget {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 16px;
  padding: 24px;
  transition: all .2s;
}
.s7-widget:hover { box-shadow: var(--shadow-card); }
.s7-widget.full { grid-column: 1 / -1; }
.s7-widget.half { grid-column: span 2; }
.s7-widget h3 {
  font-size: 13px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--ink-400);
  margin: 0 0 16px; font-weight: 600;
}
.s7-big-num { font-size: 48px; font-weight: 700; line-height: 1; }
.s7-bar-chart {
  display: flex; align-items: flex-end; gap: 8px;
  height: 120px; padding-top: 10px;
}
.s7-bar {
  flex: 1; border-radius: 6px 6px 0 0;
  min-height: 8px;
  transition: height .3s;
}
.s7-progress-row {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 10px;
}
.s7-progress-label { font-size: 13px; width: 80px; color: var(--ink-700); }
.s7-progress-track {
  flex: 1; height: 8px; background: var(--paper-2);
  border-radius: 4px; overflow: hidden;
}
.s7-progress-fill { height: 100%; border-radius: 4px; }
.s7-progress-val { font-size: 13px; font-weight: 600; width: 40px; text-align: right; }

/* ─── S8: Masonry Cards ─── */
.s8-masonry {
  columns: 3;
  column-gap: 14px;
}
.s8-card {
  break-inside: avoid;
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 14px;
  cursor: pointer;
  transition: all .2s;
}
.s8-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.s8-card .s8-top-bar { height: 5px; border-radius: 3px; margin-bottom: 14px; }
.s8-card h3 { font-size: 15px; font-weight: 600; margin: 0 0 8px; }
.s8-card p { font-size: 13px; color: var(--ink-500); line-height: 1.5; margin: 0 0 12px; }
.s8-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.s8-tag {
  font-size: 11px; padding: 3px 8px;
  border-radius: var(--r-pill);
  font-weight: 500;
}

/* ─── S9: Split Pane (Notion-like) ─── */
.s9-split {
  display: grid; grid-template-columns: 320px 1fr;
  gap: 0;
  border: 1px solid var(--ink-200);
  border-radius: 16px;
  overflow: hidden;
  min-height: 600px;
  background: var(--white);
}
.s9-left {
  border-right: 1px solid var(--ink-200);
  overflow-y: auto;
}
.s9-left-head {
  padding: 18px 20px;
  border-bottom: 1px solid var(--ink-100);
  display: flex; align-items: center; gap: 10px;
}
.s9-left-head input {
  flex: 1; border: none; outline: none;
  font-size: 14px; font-family: var(--font-sans);
  background: none;
}
.s9-nav-item {
  padding: 12px 20px;
  display: flex; align-items: center; gap: 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--ink-100);
  transition: background .1s;
  font-size: 14px;
}
.s9-nav-item:hover { background: oklch(0.98 0.01 80 / 0.5); }
.s9-nav-item.active { background: oklch(0.96 0.02 240 / 0.4); }
.s9-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.s9-nav-info { flex: 1; }
.s9-nav-info strong { font-size: 13.5px; display: block; }
.s9-nav-info span { font-size: 12px; color: var(--ink-400); }
.s9-right {
  padding: 32px;
  overflow-y: auto;
}
.s9-detail-head h2 {
  font-size: 24px; font-weight: 700; margin: 0 0 8px;
}
.s9-detail-meta {
  font-size: 13px; color: var(--ink-400); margin-bottom: 24px;
  display: flex; gap: 16px;
}
.s9-detail-meta .s9-dm-tag {
  padding: 3px 10px; border-radius: var(--r-pill);
  font-size: 12px; font-weight: 500;
}
.s9-lesson-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.s9-lesson-card {
  padding: 16px; border-radius: 10px;
  border: 1px solid var(--ink-200);
  cursor: pointer; transition: all .15s;
}
.s9-lesson-card:hover { border-color: var(--ink-400); background: oklch(0.98 0.01 80 / 0.5); }
.s9-lesson-card h4 { font-size: 14px; font-weight: 550; margin: 0 0 4px; }
.s9-lesson-card span { font-size: 12px; color: var(--ink-400); }

/* ─── S10: Timeline + Cards Combo ─── */
.s10-layout {
  display: grid; grid-template-columns: 200px 1fr; gap: 24px;
}
.s10-timeline {
  position: relative;
  padding-left: 20px;
}
.s10-timeline::before {
  content: '';
  position: absolute; left: 6px; top: 0; bottom: 0;
  width: 2px; background: var(--ink-200);
}
.s10-tl-item {
  position: relative;
  padding: 8px 0 24px;
  cursor: pointer;
}
.s10-tl-item::before {
  content: '';
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid var(--ink-300);
  background: var(--white);
  position: absolute;
  left: -20px; top: 10px;
}
.s10-tl-item.active::before {
  background: var(--ink-900);
  border-color: var(--ink-900);
}
.s10-tl-item h4 {
  font-size: 14px; font-weight: 600;
  margin: 0 0 2px;
}
.s10-tl-item span { font-size: 12px; color: var(--ink-400); }
.s10-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  align-content: start;
}
.s10-card {
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all .2s;
  border: 1px solid transparent;
}
.s10-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); border-color: rgba(0,0,0,.06); }
.s10-card h4 { font-size: 14px; font-weight: 600; margin: 0 0 6px; }
.s10-card p { font-size: 12.5px; color: var(--ink-500); margin: 0 0 10px; line-height: 1.4; }
.s10-card .s10-foot {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11.5px; color: var(--ink-400);
}