/*
 * 學生端與積分商店的補充樣式。
 * 設計語言沿用 assets/style.css 的變數與元件，這裡只補它沒有的東西。
 */

/* ---- 班級榜 ---- */

.stu-rank { font-weight: 700; font-variant-numeric: tabular-nums; width: 48px; }
tr.stu-me { background: var(--green-soft); }
tr.stu-me:hover { background: var(--green-soft); }
tr.stu-me td { font-weight: 700; }

.stu-delta { font-weight: 700; font-variant-numeric: tabular-nums; }
.stu-delta.up { color: var(--green); }
.stu-delta.down { color: var(--amber); }
.stu-delta.flat { color: var(--ink-soft); font-weight: 600; }

.stu-note { margin-top: 10px; }

/* ---- 每週正向長條圖 ---- */

.stu-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 170px;
}

.stu-col {
  flex: 1 1 0;
  min-width: 34px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.stu-val { font-size: 12px; font-weight: 700; color: var(--green); font-variant-numeric: tabular-nums; min-height: 18px; }

.stu-bar {
  width: 100%;
  background: var(--green);
  border-radius: 6px 6px 0 0;
  min-height: 3px;
}

/* ---- 學生端商店 ---- */

.stu-rewards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.stu-reward {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stu-reward-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.stu-reward-name { font-weight: 700; font-size: 15px; }
.stu-cost { font-weight: 700; color: var(--green); font-variant-numeric: tabular-nums; white-space: nowrap; }
.stu-reward-meta { font-size: 13px; color: var(--ink-soft); }
.stu-reward .btn { width: 100%; }
.stu-reward .btn:disabled { opacity: .5; cursor: not-allowed; }
.stu-reward .btn:disabled:hover { background: var(--green); }
.stu-lack { font-size: 12px; color: var(--amber); text-align: center; }

/* ---- 老師端商店 ---- */

.stu-gap { margin-top: 28px; }
.stu-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.stu-short { color: var(--red); font-weight: 700; }
tr.stu-off { opacity: .55; }

.stu-form { display: grid; gap: 14px; }
.stu-form h3 { font-size: 15px; }

.stu-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.stu-form-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
}

.stu-form-grid input[type="text"],
.stu-form-grid input[type="number"] {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  min-height: 40px;
}

.stu-check { flex-direction: row !important; align-items: center; align-self: end; min-height: 40px; }

/* ---- 手機 ---- */

@media (max-width: 560px) {
  .stu-rewards { grid-template-columns: 1fr; }
  .stu-chart { height: 140px; gap: 5px; }
  .stu-col { min-width: 0; }
  .tabs { top: 57px; }
  th, td { padding: 8px 6px; font-size: 13px; }
  .stu-rank { width: 34px; }
  .stu-actions .btn { padding: 5px 8px; min-height: 32px; font-size: 13px; }
}