/* Maths section */
.view-math .tabs { margin-top: -4px; }
.math-back { display: inline-block; margin-bottom: 8px; }
.math-tables { display: grid; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); gap: 10px; }
.math-table-btn {
  display: flex; flex-direction: column; align-items: center; padding: 12px 6px; border-radius: 14px;
  background: linear-gradient(160deg, #10306e, #0a1a42); border: 1px solid var(--line); color: var(--ink); text-decoration: none;
  transition: transform .15s, border-color .15s;
}
.math-table-btn b { font: 800 30px/1 var(--font-head); color: var(--gold); }
.math-table-btn small { color: var(--muted); font-weight: 700; }
.math-table-btn:hover, .math-table-btn:focus-visible { transform: translateY(-3px); border-color: var(--gold); }

.math-topics { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
.math-topic { display: flex; flex-direction: column; }
.math-icon { font-size: 44px; text-align: center; padding: 18px 0 6px; background: radial-gradient(circle at 50% 60%, rgba(255,199,44,.18), transparent 70%); }
.math-stars { color: var(--gold-2); font-weight: 800; margin: 4px 0 10px; }

.math-tbl { list-style: none; padding: 0; margin: 0 0 16px; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.math-tbl li {
  display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 12px;
  background: #0b1d45; border: 1px solid var(--line); font: 800 22px var(--font-head); transition: background .2s, transform .2s;
}
.math-tbl li.on { background: var(--gold); color: #1b1300; border-color: var(--gold); transform: scale(1.04); }
.math-tbl li.on .speak-btn { color: #1b1300; border-color: #1b1300; }

.math-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.math-progress { flex: 1 1 140px; }
.math-q { margin-top: 16px; word-break: break-word; }
.math-input { max-width: 220px; font-size: 22px; font-weight: 800; text-align: center; }
.math-done { text-align: center; padding: 10px 0; }
.math-done .math-row { justify-content: center; }
.math-big-stars { font-size: 56px; color: var(--gold); letter-spacing: 6px; }