/* MandarinMiles · SRS flashcards */
.mm-srs { max-width: 560px; margin: 2rem auto; text-align: center; }
.mm-srs-stat { color: var(--muted, #6b7280); font-size: .9rem; }
.mm-srs-card {
  background: var(--card, #fff);
  border: 1px solid var(--border, #e5e7eb);
  border-radius: 16px;
  padding: 2rem;
  margin: 1rem 0;
}
.mm-srs-word {
  font-size: 2.4rem;
  font-weight: 700;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text, #111827);
}
.mm-srs-back { margin-top: 1rem; }
.mm-srs-pinyin { color: #5B97F9; font-size: 1.3rem; letter-spacing: .04em; }
.mm-srs-def { color: var(--text, #111827); font-size: 1.1rem; }
.mm-srs-controls { display: flex; gap: .75rem; justify-content: center; margin-top: 1rem; }
.mm-srs-btn {
  border: 1px solid var(--border, #e5e7eb);
  background: var(--card, #fff);
  border-radius: 10px;
  padding: .6rem 1.4rem;
  font-weight: 600;
  cursor: pointer;
}
.mm-srs-btn.again { color: #dc2626; }
.mm-srs-btn.hard { color: #d97706; }
.mm-srs-btn.good { color: #2A9D8F; }
.mm-srs-btn.easy { color: #1166F0; }
.mm-srs-btn:active { transform: translateY(1px); }
.mm-srs-note, .mm-srs-link { color: var(--muted, #6b7280); font-size: .9rem; }

/* Export to Anki */
.mm-srs-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem; text-align: left; }
.mm-srs-head h2 { margin: 0; }
.mm-srs-head p { margin: .25rem 0 0; flex-basis: 100%; }
.mm-srs-export {
  border: 1px solid var(--primary, #1166F0);
  background: var(--card, #fff);
  color: var(--primary, #1166F0);
  border-radius: 10px;
  padding: .5rem 1rem;
  font-weight: 600;
  cursor: pointer;
}
.mm-srs-export:disabled { opacity: .5; cursor: default; }
.mm-srs-export:hover:not(:disabled) { background: var(--primary, #1166F0); color: #fff; }

/* 闪卡背面的语境例句（读物原句或 Tatoeba 例句 + 英译） */
.mm-srs-ex {
	margin-top: 14px;
	padding-top: 12px;
	border-top: 1px solid var(--border, #e5e7eb);
	text-align: left;
}
.mm-srs-ex[hidden] { display: none; }
.mm-srs-ex-zh { font-size: 1.05rem; line-height: 1.7; color: var(--text, #111827); margin: 0 0 5px; }
.mm-srs-ex-en { font-size: 0.95rem; line-height: 1.55; color: var(--muted, #6b7280); font-style: italic; margin: 0 0 5px; }
.mm-srs-ex-en[hidden] { display: none; }
.mm-srs-ex-src { font-size: 0.8rem; margin: 0; }
.mm-srs-ex-src[hidden] { display: none; }
.mm-srs-ex-src a { color: var(--primary, #1166F0); text-decoration: none; }
.mm-srs-ex-src a:hover { text-decoration: underline; }

/* Leech 提示（lapses ≥ 4）：背面琥珀色警示条 */
.mm-srs-leech {
  margin: 10px 0 0;
  padding: 8px 12px;
  border-radius: 8px;
  background: #FFF7E8;
  color: #92600A;
  font-size: .9rem;
  line-height: 1.6;
}
:root[data-theme="dark"] .mm-srs-leech { background: #3A2E14; color: #E8C878; }

/* ---------- 复习测试模式（2.0） ---------- */
.mm-srs-modes { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; margin: 0 0 1rem; }
.mm-srs-mode {
  font: inherit; font-size: .85rem; font-weight: 600; cursor: pointer;
  background: var(--card, #fff); color: var(--muted, #6b7280);
  border: 1.5px solid var(--border, #e5e7eb); border-radius: 999px; padding: .35rem .9rem;
  transition: border-color .12s, background .12s, color .12s;
}
.mm-srs-mode:hover { border-color: var(--primary, #1166F0); color: var(--primary, #1166F0); }
.mm-srs-mode.is-on { border-color: var(--primary, #1166F0); color: #1166F0; background: var(--brand-tint, #EEF4FF); }
.mm-srs-quiz[hidden] { display: none; }
.mm-srs-q-kind { font-size: .8rem; font-weight: 700; color: var(--muted, #6b7280); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 8px; }
.mm-srs-q-stem { font-size: 1.15rem; line-height: 1.65; color: var(--text, #111827); margin: 0 0 14px; }
.mm-srs-q-stem.mm-srs-cloze { text-align: left; }
.mm-srs-cloze-en { display: block; margin-top: 6px; font-size: .9rem; color: var(--muted, #6b7280); font-style: italic; }
.mm-srs-blank { color: var(--primary, #1166F0); font-weight: 700; letter-spacing: .1em; }
.mm-srs-q-play {
  font: inherit; font-weight: 700; cursor: pointer;
  background: var(--primary, #1166F0); color: #fff; border: 0; border-radius: 10px;
  padding: .7rem 1.6rem; margin-bottom: 6px;
}
.mm-srs-q-play:hover { background: var(--primary-dark, #0B57C8); }
.mm-srs-opts { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; }
.mm-srs-opt {
  flex: 1 1 110px; max-width: 160px; font: inherit; font-size: 1.5rem; font-weight: 700; cursor: pointer;
  padding: .7rem .6rem; color: var(--text, #111827);
  background: var(--card, #fff); border: 2px solid var(--border, #e5e7eb); border-radius: 12px;
  transition: border-color .12s, background .12s;
}
.mm-srs-opt:hover:not(:disabled) { border-color: var(--primary, #1166F0); }
.mm-srs-opt:disabled { cursor: default; opacity: .75; }
.mm-srs-opt.is-right { border-color: #2A9D8F; background: var(--teal-tint, #E8F6F3); color: #2A9D8F; opacity: 1; }
.mm-srs-opt.is-pick { box-shadow: 0 0 0 2px #2A9D8F inset; }
.mm-srs-verdict { margin-top: .9rem; font-size: 1rem; }
.mm-srs-verdict b.ok { color: #2A9D8F; }
.mm-srs-verdict b.bad { color: #dc2626; display: block; margin-bottom: .5rem; }
.mm-srs-ans { font-weight: 800; }
.mm-srs-q-next {
  font: inherit; font-weight: 700; cursor: pointer;
  background: var(--action, #1166F0); color: var(--action-ink, #fff); border: 0; border-radius: 10px;
  padding: .55rem 1.4rem;
}
.mm-srs-q-next:hover { background: var(--action-hover, #0D4FC7); }

/* ---------- Spell（听写）模式 ---------- */
.mm-srs-spell {
  font: inherit; font-size: 1.3rem; font-weight: 700; text-align: center;
  background: var(--card, #fff); color: var(--text, #111827);
  border: 2px solid var(--border, #e5e7eb); border-radius: 12px;
  padding: .6rem 1rem; width: min(320px, 100%); margin: 4px 0 10px;
}
.mm-srs-spell:focus { outline: none; border-color: var(--primary, #1166F0); }
.mm-srs-spell-go { margin: 0 auto; display: block; }