/* ============================================================
   Section 3 — 24 小時時間帶
   ============================================================ */

#availability {
  background: var(--color-bg);
}

/* --- Header row --- */
.avail-grid-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.avail-table {
  min-width: 760px;
  width: 100%;
}

/* --- 時間 header --- */
.avail-header {
  display: grid;
  grid-template-columns: 120px repeat(24, 1fr);
  gap: 0;
  margin-bottom: var(--space-2);
  padding-left: 0;
}

.avail-header__spacer {
  /* name column */
}

.avail-hour-label {
  font-size: var(--text-2xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  text-align: left;
  line-height: 1;
  padding-bottom: var(--space-2);
}

.avail-hour-label--bold {
  font-weight: bold;
  color: var(--color-text-primary);
}

/* --- 每個人的 row --- */
.avail-row {
  display: grid;
  grid-template-columns: 120px repeat(24, 1fr);
  gap: 0;
  margin-bottom: 8px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.avail-row:hover {
  z-index: 10;
}

/* --- 名字欄 --- */
.avail-row__identity {
  display: flex;
  position: relative;
  align-items: center;
  gap: var(--space-2);
  justify-self: start;
  width: 80px;
  transition: transform 0.2s ease;
}

.avail-row__identity:hover {
  transform: translateY(-2px);
}

.avail-row__identity.has-note {
  cursor: default;
}

.avail-row__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  flex-shrink: 0;
}

.avail-row__name {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- 時段格 --- */
.avail-cell {
  height: 28px;
  border-radius: 3px;
}

.avail-cell--night {
  background: #F0EEE8;
}

.avail-cell--day {
  background: #F2F2EE;
}

/* 可回覆時段 — 統一顏色 */
.avail-cell.is-available {
  background: #F05030;
  opacity: 0.7;
}

.avail-cell.is-available:hover {
  opacity: 1;
}

/* --- 補充說明 tooltip（固定於外層，不受 overflow 裁切）--- */
.avail-note-tooltip {
  position: fixed;
  transform: translateY(-50%);
  background: #1a1a1a;
  color: #fff;
  font-size: 11px;
  font-weight: var(--font-weight-medium);
  line-height: 1.6;
  padding: 6px 10px;
  border-radius: 6px;
  max-width: 240px;
  width: max-content;
  white-space: normal;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  z-index: 99999;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.avail-note-tooltip::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 100%;
  transform: translateY(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: transparent #1a1a1a transparent transparent;
}

.avail-note-tooltip.is-visible {
  opacity: 1;
  visibility: visible;
}

/* --- 圖例（已隱藏，保留 DOM 結構）--- */
.avail-legend {
  display: none;
}