/* Mad Minute Flashcards + Circuit Lab. Uses the app's own color tokens (--panel, --amber, --teal…),
   so it follows System / Light / Dark automatically. */

/* home: Vocab button under each topic card */
.mmf-cell { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.mmf-cell > .topic-card { flex: 1; }
.topics-grid > .mmf-cell:last-child:nth-child(odd) { grid-column: 1 / -1; }
.mmf-vocab {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  background: transparent; border: 1px solid var(--line); border-radius: 10px;
  color: var(--teal); font: inherit; font-size: 12px; font-weight: 600; padding: 8px 10px; cursor: pointer;
}
.mmf-vocab .mmf-n { color: var(--text-dim); font-weight: 500; }
.mmf-vocab:active { transform: scale(0.98); }
.mmf-vocab:focus-visible, .mmf-pill:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

.mmf-homebar { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.mmf-homebar > :only-child { grid-column: 1 / -1; }
.mmf-pill {
  display: flex; flex-direction: column; gap: 3px; text-align: left; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; color: var(--text);
  font: inherit; padding: 11px 12px;
}
.mmf-pill b { font-size: 13px; }
.mmf-pill span { font-size: 12px; color: var(--text-dim); }
.mmf-pill:disabled { opacity: 0.55; cursor: default; }
.mmf-lab-pill b { color: var(--teal); }

/* full-screen layer */
body.mmf-lock { overflow: hidden; }
.mmf-overlay {
  position: fixed; inset: 0; z-index: 9000; background: var(--bg); color: var(--text);
  display: flex; flex-direction: column; overflow-y: auto;
  padding: calc(env(safe-area-inset-top, 0px) + 10px) 16px calc(env(safe-area-inset-bottom, 0px) + 16px);
}
.mmf-top { display: flex; align-items: center; gap: 12px; max-width: 560px; width: 100%; margin: 0 auto; }
.mmf-x {
  width: 40px; height: 40px; flex: none; border-radius: 50%; border: 1px solid var(--line);
  background: var(--panel); color: var(--text); font-size: 16px; cursor: pointer;
}
.mmf-title { display: flex; flex-direction: column; min-width: 0; }
.mmf-title b { font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mmf-title span { font-size: 12px; color: var(--text-dim); }
.mmf-bar { height: 4px; background: var(--panel-2); border-radius: 2px; max-width: 560px; width: 100%; margin: 12px auto 0; overflow: hidden; }
.mmf-bar i { display: block; height: 100%; width: 0; background: var(--amber); transition: width .25s ease; }
.mmf-stage { flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 16px; max-width: 560px; width: 100%; margin: 0 auto; padding: 18px 0; }
.mmf-note { font-size: 12px; color: var(--text-dim); text-align: center; }

/* the card */
.mmf-card { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; perspective: 1200px; width: 100%; }
.mmf-inner {
  display: grid; position: relative; min-height: 300px;
  transform-style: preserve-3d; transition: transform .45s cubic-bezier(.2,.7,.2,1);
}
.mmf-card.flipped .mmf-inner { transform: rotateY(180deg); }
.mmf-face {
  grid-area: 1 / 1; display: flex; flex-direction: column; justify-content: center; gap: 14px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 26px 22px;
  backface-visibility: hidden; -webkit-backface-visibility: hidden; text-align: center;
}
.mmf-back { transform: rotateY(180deg); text-align: left; border-color: var(--teal); }
.mmf-topic { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }
.mmf-back .mmf-topic { color: var(--teal); font-size: 13px; letter-spacing: 0; text-transform: none; font-weight: 700; }
.mmf-term { font-size: 30px; font-weight: 700; line-height: 1.15; overflow-wrap: anywhere; }
.mmf-hint { font-size: 12px; color: var(--text-dim); }
.mmf-meaning { font-size: 18px; line-height: 1.45; }
.mmf-tip { font-size: 14px; line-height: 1.45; color: var(--text-dim); border-top: 1px solid var(--line); padding-top: 12px; }
.mmf-tip b { color: var(--amber); }
@media (prefers-reduced-motion: reduce) { .mmf-inner { transition: none; } }

.mmf-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mmf-actions .btn { padding-top: 14px; padding-bottom: 14px; font-size: 15px; }
.mmf-actions .btn:disabled { opacity: .4; }
.mmf-again { color: var(--red); }

.mmf-done { text-align: center; display: flex; flex-direction: column; gap: 12px; align-items: center; }
.mmf-big { font-size: 26px; font-weight: 700; }
.mmf-done p { color: var(--text-dim); margin: 0; max-width: 34ch; line-height: 1.45; }
.mmf-done-btns { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 6px; }

/* results screen card */
.mmf-res { display: flex; flex-direction: column; gap: 8px; }
.mmf-res p { margin: 0; font-size: 13px; }
.mmf-res-btns { display: flex; flex-wrap: wrap; gap: 8px; }

/* Circuit Lab */
.mmf-lab-body { max-width: 560px; width: 100%; margin: 14px auto 0; display: flex; flex-direction: column; gap: 12px; }
.mmf-status { font-size: 15px; text-align: center; min-height: 22px; }
.mmf-status b { color: var(--amber); }
.mmf-svg-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 6px; }
.lab-svg { width: 100%; height: auto; display: block; }
.lab-wire { fill: none; stroke: var(--text-dim); stroke-width: 3; stroke-linejoin: round; }
.lab-flow { fill: none; stroke: var(--teal); stroke-width: 3; stroke-dasharray: 6 12; animation: mmfFlow 1s linear infinite; }
@keyframes mmfFlow { to { stroke-dashoffset: -36; } }
@media (prefers-reduced-motion: reduce) { .lab-flow { animation: none; } }
.lab-short { fill: none; stroke: var(--red); stroke-width: 3; }
.lab-part { cursor: pointer; outline: none; }
.lab-hit { fill: var(--panel); stroke: transparent; stroke-width: 2; }
.lab-part.sel .lab-hit, .lab-part:focus-visible .lab-hit { stroke: var(--amber); }
.lab-body { fill: var(--panel-2); stroke: var(--text); stroke-width: 2; }
.lab-elem { fill: none; stroke: var(--text); stroke-width: 2.5; stroke-linecap: round; }
.lab-elem.bad { stroke: var(--red); }
.lab-dot { fill: var(--text); }
.lab-bulb { fill: var(--panel-2); stroke: var(--text); stroke-width: 2; }
.lab-glow { fill: var(--amber); }
.lab-rust { fill: #a5562b; }
.lab-sym { font-size: 16px; font-weight: 700; fill: var(--text); text-anchor: middle; }
.lab-small { font-size: 10px; fill: var(--text-dim); text-anchor: middle; }
.mmf-meters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.mmf-meter { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 10px; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.mmf-meter span { font-size: 11px; color: var(--text-dim); }
.mmf-meter b { font-size: 18px; font-variant-numeric: tabular-nums; }
.mmf-meter small { font-size: 11px; color: var(--text-dim); line-height: 1.3; }
.mmf-lab-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mmf-info { background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--teal); border-radius: 12px; padding: 12px 14px; font-size: 14px; line-height: 1.5; }
.mmf-foot { font-size: 11px; color: var(--text-dim); margin: 0; text-align: center; }

/* Flashcards button: full width, first thing in the home bar */
.mmf-flash-pill { grid-column: 1 / -1; border-color: var(--amber); }
.mmf-flash-pill b { font-size: 15px; color: var(--amber); }

/* schematic symbols (shared/mm-symbols.js): lines take the color of whatever holds them */
.mms { display: block; fill: none; stroke: currentColor; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; overflow: visible; }
.mms .t { stroke-width: 7; }
.mms .f { fill: currentColor; stroke: none; }
.mms .d { stroke-dasharray: 4 5; stroke-width: 2; }
.mms text { fill: currentColor; stroke: none; font-size: 18px; font-weight: 700; font-family: inherit; }
.mms text.s { font-size: 12px; font-weight: 600; }
.mms text.c { font-size: 18px; text-anchor: middle; }
.mms-big { width: 100%; max-width: 300px; height: auto; margin: 0 auto; }

/* symbol card */
.mmf-symcard .mmf-inner { min-height: 330px; }
.mmf-sym { color: var(--text); padding: 6px 0; }
.mmf-symrow { display: flex; align-items: center; gap: 10px; }
.mmf-sym-sm { width: 64px; flex: none; color: var(--teal); }
.mmf-sym-sm .mms { width: 64px; height: auto; }

/* circuit strip: the whole circuit in a row, "you are here" in amber */
.mmf-strip { display: flex; align-items: center; justify-content: center; flex-wrap: nowrap; color: var(--text-dim); opacity: .9; }
.mmf-strip-part { flex: 1 1 0; max-width: 54px; min-width: 0; padding: 4px 0; border-bottom: 2px solid transparent; }
.mmf-strip-part .mms { width: 100%; height: auto; stroke-width: 4; }
.mmf-strip-part.on { color: var(--amber); border-bottom-color: var(--amber); }
.mmf-strip-part.on .mms { stroke-width: 5; }
.mmf-strip-part.done { color: var(--teal); }

/* hub */
.mmf-hub { max-width: 560px; width: 100%; margin: 14px auto 0; display: flex; flex-direction: column; gap: 10px; }
.mmf-hub-h { display: flex; flex-direction: column; gap: 3px; margin-top: 10px; }
.mmf-hub-h b { font-size: 16px; }
.mmf-hub-h span { font-size: 13px; color: var(--text-dim); line-height: 1.4; }
.mmf-hub-two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mmf-hub-wide { width: 100%; }
.mmf-circ {
  display: flex; flex-direction: column; gap: 8px; text-align: left; cursor: pointer; width: 100%;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; color: var(--text);
  font: inherit; padding: 12px;
}
.mmf-circ:active, .mmf-pill:active { transform: scale(0.99); }
.mmf-circ:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.mmf-circ-t { display: flex; flex-direction: column; gap: 2px; }
.mmf-circ-t b { font-size: 14px; }
.mmf-circ-t span { font-size: 12px; color: var(--text-dim); }
.mmf-circ .mmf-strip { justify-content: flex-start; color: var(--teal); }
.mmf-topicrow { flex-direction: row; justify-content: space-between; align-items: center; }
.mmf-due { font-size: 12px; font-weight: 600; color: var(--amber); white-space: nowrap; }
.mmf-due.none { color: var(--text-dim); font-weight: 500; }
.mmf-hub-g { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--amber); margin-top: 6px; }

/* card sits near the top instead of floating mid-screen */
.mmf-stage { justify-content: flex-start; padding-top: 28px; }
/* Again: a clear red outline button, not gray */
.mmf-actions .mmf-again { background: transparent; border: 1.5px solid var(--red); color: var(--red); }
.mmf-actions .mmf-again:disabled, .mmf-actions .mmf-got:disabled { opacity: .35; }
.mmf-hub-wide.mmf-lab-pill { width: 100%; }

/* subject picker in the hub */
.mmf-subjects { display: flex; gap: 8px; overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 2px 2px 6px; scrollbar-width: none; }
.mmf-subjects::-webkit-scrollbar { display: none; }
.mmf-subj { flex-shrink: 0; padding: 8px 14px; border-radius: 99px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font: 600 14px/1.2 inherit; font-family: inherit; cursor: pointer; }
.mmf-subj.on { background: var(--amber); color: var(--amber-ink); border-color: var(--amber); }
.mmf-due.fresh { color: var(--teal); }