/* Kelin Design System V1 — reusable components for migrated workspaces only.
   This file deliberately contains no global .card/.btn/table overrides. */
:root {
  --kelin-primary: #247367;
  --kelin-primary-hover: #1c5d54;
  --kelin-primary-soft: #edf7f2;
  --kelin-warning: #9a4e26;
  --kelin-warning-soft: #fff0e4;
  --kelin-danger: #aa4c40;
  --kelin-danger-soft: #fff0ed;
  --kelin-success: #347650;
  --kelin-success-soft: #e9f5ec;
  --kelin-neutral: #68726f;
  --kelin-neutral-soft: #f1f2ef;
  --kelin-text-primary: #20342d;
  --kelin-text-secondary: #506e64;
  --kelin-text-muted: #63766e;
  --kelin-border: #d8e6df;
  --kelin-surface: #ffffff;
  --kelin-focus-ring: rgba(36, 115, 103, .34);
  --kelin-radius-control: 8px;
  --kelin-radius-card: 12px;
  --kelin-shadow-card: 0 1px 2px rgba(30, 55, 47, .035), 0 8px 24px rgba(30, 55, 47, .045);
}

/* Page shell and headers */
.k-page { width: 100%; max-width: 1520px; margin: 0 auto; }
.k-page-header { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.k-page-header h1 { margin: 4px 0; color: #1d4138; font-size: clamp(24px, 2vw, 28px); line-height: 1.25; letter-spacing: -.025em; }
.k-page-header p { margin: 0; color: var(--kelin-text-muted); font-size: 15px; line-height: 1.55; }
.k-section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; min-height: 44px; margin-bottom: 16px; }
.k-section-header h2 { margin: 3px 0 0; color: #243c35; font-size: 20px; line-height: 1.3; }

/* V2 card and action compatibility. Existing business classes remain the API. */
.k-page .card { padding: 20px 24px; border-radius: var(--kelin-radius-card); box-shadow: var(--kelin-shadow-card); }
.k-page .btn { border-radius: var(--kelin-radius-control); transition: border-color .15s ease, background .15s ease, color .15s ease, box-shadow .15s ease; }
.k-page .btn:hover { transform: none; }
.k-page .btn.primary { background: var(--kelin-primary); box-shadow: 0 3px 10px rgba(36, 115, 103, .14); }
.k-page .btn.primary:hover { background: var(--kelin-primary-hover); box-shadow: 0 5px 12px rgba(36, 115, 103, .16); }
.k-page .btn.secondary:hover,.k-page .btn.ghost:hover { color: var(--kelin-primary-hover); border-color: #8eb7a9; background: var(--kelin-primary-soft); }

/* Table frame; column widths and row density stay page-owned. */
.k-table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--kelin-border); border-radius: var(--kelin-radius-card); background: var(--kelin-surface); }
.k-table { margin: 0; }

/* Shared control finish and keyboard focus for migrated pages. */
.k-page :is(input, select, textarea) { border-radius: var(--kelin-radius-control); }
.k-focus-scope :is(a, button, input, select, textarea):focus-visible { outline: 3px solid var(--kelin-focus-ring); outline-offset: 2px; }

/* The teacher and parent summaries share the same three-column information contract. */
.k-summary-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; overflow: hidden; margin-bottom: 20px; border: 1px solid var(--kelin-border); border-radius: var(--kelin-radius-card); background: var(--kelin-border); }
.k-summary-row > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: baseline; gap: 4px 12px; min-height: 76px; padding: 15px 20px; background: var(--kelin-surface); }
.k-summary-row span { color: var(--kelin-text-muted); font-size: 13px; }
.k-summary-row b { color: #286b5c; font-size: 24px; font-variant-numeric: tabular-nums; line-height: 1.05; }
.k-summary-row small { grid-column: 1 / -1; color: var(--kelin-text-muted); font-size: 12px; line-height: 1.35; }

/* Semantic feedback: text remains the source of meaning; these components are non-interactive by default. */
.k-badge { display: inline-flex; align-items: center; min-height: 24px; padding: 4px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; line-height: 1.35; white-space: nowrap; }
.k-badge.k-badge--success { color: var(--kelin-success); background: var(--kelin-success-soft); }
.k-badge.k-badge--warning { color: var(--kelin-warning); background: var(--kelin-warning-soft); }
.k-badge.k-badge--danger { color: var(--kelin-danger); background: var(--kelin-danger-soft); }
.k-badge.k-badge--neutral { color: var(--kelin-neutral); background: var(--kelin-neutral-soft); }
.k-badge.k-badge--info { color: var(--kelin-primary); background: var(--kelin-primary-soft); }

.k-alert { margin-bottom: 14px; padding: 12px 14px; border: 1px solid transparent; border-radius: 10px; font-size: 14px; line-height: 1.5; }
.k-alert.k-alert--success { color: var(--kelin-success); border-color: #cce0d8; background: var(--kelin-success-soft); }
.k-alert.k-alert--warning { color: var(--kelin-warning); border-color: #f0d6c5; background: var(--kelin-warning-soft); }
.k-alert.k-alert--info { color: #6e604a; border-color: #eadfc9; background: #f7f3ea; }

.k-empty-state { padding: 36px 10px; color: var(--kelin-text-muted); border-radius: var(--kelin-radius-card); background: #fafbf9; text-align: center; }

@media (max-width: 700px) {
  .k-summary-row { grid-template-columns: 1fr; }
}