/* ═══════════════════════════════════════════════
   ROOT LAB — Search Overlay (要件16)
═══════════════════════════════════════════════ */

/* ── ヘッダーの検索ボタン ── */
.nav-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 99px;
  border: 1px solid var(--border-m);
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color var(--t), border-color var(--t);
}

.nav-search-btn:hover {
  color: var(--text-0);
  border-color: var(--accent-blue);
}

.nav-search-btn svg { width: 13px; height: 13px; }

.nav-search-btn kbd {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-2);
}

@media (max-width: 960px) {
  .nav-search-btn kbd { display: none; }
}

/* ── オーバーレイ本体 ── */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal, 900);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 20px 20px;
}

.search-overlay[hidden] { display: none; }

.search-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 14, 0.82);
  backdrop-filter: blur(6px);
}

.search-panel {
  position: relative;
  width: min(680px, 100%);
  max-height: 72vh;
  display: flex;
  flex-direction: column;
  border-radius: var(--r-xl, 20px);
  border: 1px solid var(--border-m);
  background: var(--bg-1, #060f1f);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  overflow: hidden;
  animation: searchPanelIn 0.18s var(--ease-out, cubic-bezier(.2,.8,.2,1));
}

@keyframes searchPanelIn {
  from { opacity: 0; transform: translateY(-12px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── 入力行 ── */
.search-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.search-input-icon {
  width: 18px;
  height: 18px;
  color: var(--text-2);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-0);
  font-family: var(--font-body, inherit);
  font-size: 0.95rem;
}

.search-input::placeholder { color: var(--text-2); }
.search-input::-webkit-search-cancel-button { display: none; }

.search-close {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.12em;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: color var(--t), border-color var(--t);
  flex-shrink: 0;
}

.search-close:hover { color: var(--text-0); border-color: var(--border-hover); }

/* ── 結果リスト ── */
.search-results {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.search-group { padding: 6px 0; }

.search-group-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-2);
}

.search-group-label span {
  font-size: 0.5rem;
  padding: 1px 6px;
  border-radius: 99px;
  border: 1px solid var(--border);
}

.search-result {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 20px;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background var(--t), border-color var(--t);
}

.search-result.active {
  background: rgba(75, 169, 255, 0.07);
  border-left-color: var(--accent-blue);
}

.search-result-badge {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid;
  border-radius: 99px;
  width: 78px;
  text-align: center;
}

.search-result-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.search-result-title {
  font-size: 0.85rem;
  color: var(--text-0);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-result-desc {
  font-size: 0.7rem;
  color: var(--text-2);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-result-meta {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

.search-result mark {
  background: rgba(75, 169, 255, 0.22);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}

/* ── 空状態 ── */
.search-empty {
  padding: 48px 24px;
  text-align: center;
}

.search-empty-title {
  font-size: 0.85rem;
  color: var(--text-1);
  margin-bottom: 8px;
}

.search-empty-desc {
  font-size: 0.72rem;
  color: var(--text-2);
  line-height: 1.7;
}

/* ── フッターヒント ── */
.search-hint {
  display: flex;
  gap: 18px;
  padding: 11px 20px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-2);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.search-hint kbd {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  padding: 1px 5px;
  margin-right: 3px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

@media (max-width: 600px) {
  .search-overlay { padding: 6vh 12px 12px; }
  .search-panel { max-height: 84vh; }
  .search-result-badge { width: 62px; font-size: 0.45rem; }
  .search-result-meta { display: none; }
  .search-hint { display: none; }
}