.skill-library-panel {
  --skill-ink: #17233a;
  --skill-muted: #60708a;
  --skill-line: #dce4ef;
  display: grid;
  gap: 14px;
}

.skill-library-hero,
.skill-source-section > header,
.skill-record-section > header,
.skill-card > header,
.skill-card > footer,
.skill-test-row,
.skill-case-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.skill-library-hero {
  padding: 20px;
  border: 1px solid #d6e0ed;
  border-radius: 18px;
  background: linear-gradient(135deg, #f9fbff 0%, #eef5ff 58%, #f4fbf7 100%);
  box-shadow: 0 12px 30px rgba(26, 56, 94, 0.08);
}

.skill-library-hero h2,
.skill-source-section strong,
.skill-record-section strong { margin: 2px 0 0; color: var(--skill-ink); }
.skill-library-hero p:last-child { max-width: 760px; margin: 7px 0 0; color: var(--skill-muted); line-height: 1.6; }

.skill-library-status { min-height: 22px; color: var(--skill-muted); font-size: 13px; }
.skill-library-status[data-tone="error"] { color: #a72d35; }
.skill-library-status[data-tone="success"] { color: #1b7548; }

.skill-library-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.skill-library-metrics article,
.skill-source-section,
.skill-record-section,
.skill-card {
  border: 1px solid var(--skill-line);
  border-radius: 16px;
  background: #fff;
}

.skill-library-metrics article { padding: 13px 15px; }
.skill-library-metrics span,
.skill-source-section header span,
.skill-record-section header span { display: block; color: var(--skill-muted); font-size: 12px; }
.skill-library-metrics strong { display: block; margin-top: 3px; color: var(--skill-ink); font-size: 22px; }

.skill-source-section,
.skill-record-section { padding: 15px; }
.skill-source-section > header,
.skill-record-section > header { align-items: flex-end; padding-bottom: 11px; border-bottom: 1px solid #edf1f6; }
.skill-source-section > header small,
.skill-record-section > header small { color: var(--skill-muted); }

.skill-source-list,
.skill-record-list { display: grid; gap: 10px; margin-top: 11px; }
.skill-source-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.skill-case-card { padding: 12px 13px; border: 1px solid #e3e9f1; border-radius: 12px; background: #fbfcfe; }
.skill-case-card > div { min-width: 0; }
.skill-case-card span,
.skill-case-card small { display: block; color: var(--skill-muted); font-size: 12px; }
.skill-case-card strong { display: block; overflow: hidden; margin: 2px 0; color: var(--skill-ink); text-overflow: ellipsis; white-space: nowrap; }

.skill-empty { padding: 24px 14px; border: 1px dashed #cfd9e6; border-radius: 12px; text-align: center; color: var(--skill-muted); background: #fbfcfe; }
.skill-empty strong { display: block; margin-bottom: 4px; color: var(--skill-ink); }
.skill-empty p { margin: 0; line-height: 1.55; }

.skill-card { overflow: hidden; }
.skill-card > header { padding: 14px 15px 11px; align-items: flex-start; }
.skill-card > header h3 { margin: 3px 0 4px; color: var(--skill-ink); font-size: 17px; }
.skill-card > header p { margin: 0; color: var(--skill-muted); font-size: 12px; }
.skill-card-status { flex: 0 0 auto; padding: 5px 9px; border-radius: 999px; background: #eef3f9; color: #465b77; font-size: 12px; font-weight: 700; }
.skill-card-status[data-status="active"] { background: #e4f7ed; color: #14653d; }
.skill-card-status[data-status="review"] { background: #fff2d7; color: #835b05; }
.skill-card-status[data-status="retired"] { background: #f2f3f5; color: #6d7580; }

.skill-card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: #e9eef5; border-block: 1px solid #e9eef5; }
.skill-card-grid div { padding: 9px 12px; background: #fbfcfe; }
.skill-card-grid span { display: block; color: var(--skill-muted); font-size: 11px; }
.skill-card-grid strong { display: block; margin-top: 2px; color: var(--skill-ink); font-size: 13px; }

.skill-gate { padding: 10px 15px; background: #f8fafc; color: var(--skill-muted); font-size: 13px; }
.skill-gate[data-ready="true"] { background: #edf9f3; color: #17653f; }
.skill-gate strong { color: inherit; }

.skill-card details { border-top: 1px solid #edf1f6; }
.skill-card summary { padding: 11px 15px; cursor: pointer; color: #34506f; font-weight: 700; }
.skill-detail-body { padding: 0 15px 14px; }
.skill-core-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.skill-core-form label,
.skill-test-form label,
.skill-test-result label { display: grid; gap: 4px; color: var(--skill-muted); font-size: 12px; }
.skill-core-form .full { grid-column: 1 / -1; }
.skill-core-form input,
.skill-core-form select,
.skill-core-form textarea,
.skill-test-form input,
.skill-test-form textarea,
.skill-test-result input { width: 100%; min-width: 0; box-sizing: border-box; }
.skill-form-actions { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; grid-column: 1 / -1; }
.skill-form-actions select { min-width: 190px; }

.skill-test-form { display: grid; grid-template-columns: 0.8fr 1fr 1fr auto; gap: 8px; align-items: end; margin-top: 10px; padding-top: 10px; border-top: 1px solid #edf1f6; }
.skill-tests { display: grid; gap: 7px; margin-top: 10px; }
.skill-test-row { align-items: flex-end; padding: 9px; border: 1px solid #e2e8f0; border-radius: 10px; background: #fbfcfe; }
.skill-test-row > div:first-child { min-width: 160px; }
.skill-test-row strong,
.skill-test-row small { display: block; }
.skill-test-row small { margin-top: 2px; color: var(--skill-muted); }
.skill-test-result { display: grid; grid-template-columns: minmax(140px, 1fr) minmax(140px, 1fr) auto auto; gap: 6px; align-items: end; flex: 1; }

.skill-card > footer { padding: 11px 15px; justify-content: flex-end; flex-wrap: wrap; background: #fbfcfe; }
.skill-card button,
.skill-case-card button { min-height: 34px; }
.skill-card button[data-danger] { color: #9b2f35; border-color: #e4bfc3; }

@media (max-width: 900px) {
  .skill-library-metrics,
  .skill-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .skill-source-list { grid-template-columns: 1fr; }
  .skill-test-form { grid-template-columns: 1fr 1fr; }
  .skill-test-result { grid-template-columns: 1fr 1fr; width: 100%; }
  .skill-test-row { align-items: stretch; flex-direction: column; }
}

@media (max-width: 620px) {
  .skill-library-hero { align-items: flex-start; padding: 15px; }
  .skill-library-hero,
  .skill-case-card { flex-direction: column; }
  .skill-library-hero button,
  .skill-case-card button { width: 100%; }
  .skill-core-form,
  .skill-test-form { grid-template-columns: 1fr; }
  .skill-core-form .full { grid-column: auto; }
  .skill-form-actions { grid-column: auto; }
  .skill-form-actions select { min-width: 0; width: 100%; }
  .skill-test-result { grid-template-columns: 1fr; }
  .skill-test-result button { width: 100%; }
}