/* The flashcards page. Tokens come from site.css. */

.cards-app {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  width: min(100%, 34rem);
}

.cards-app section { display: flex; flex-direction: column; gap: 1rem; }
.cards-app section[hidden] { display: none; }
.cards-app h2 { margin: 0; font-size: 1.3rem; }

/* --- buttons: <button>, and links or labels that look like one ------------ */

.actions { display: flex; flex-wrap: wrap; gap: .5rem; }

.actions button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 8rem;
  padding: .75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.actions button:hover:not(:disabled),
.button:hover { border-color: var(--accent); }

.actions button:disabled { opacity: .45; cursor: default; }

.actions .primary,
.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
  font-weight: 600;
}

.actions .danger { color: var(--warn); }
.actions .danger:hover { border-color: var(--warn); background: var(--warn-soft); }

.button.file:focus-within { box-shadow: 0 0 0 3px var(--accent-soft); border-color: var(--accent); }

@media (prefers-color-scheme: dark) {
  .actions .primary,
  .button.primary { color: #10201b; }
}

/* --- the list of sets ---------------------------------------------------- */

.sets { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }

.set {
  padding: 1rem 1.15rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.set h2 { font-size: 1.15rem; overflow-wrap: anywhere; }
.set p { margin: .15rem 0 .8rem; color: var(--ink-soft); font-size: .95rem; }
.set-actions { display: flex; gap: .5rem; }
.set-actions .button { flex: 0 1 8rem; padding: .55rem .9rem; }

.empty {
  margin: 0;
  padding: 1.15rem 1.25rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--ink-faint);
}

.empty[hidden] { display: none; }

.message { margin: 0; min-height: 1.4em; color: var(--ink-soft); }

/* --- the edit form ------------------------------------------------------- */

.edit-form { display: flex; flex-direction: column; gap: .45rem; }
.edit-form label { font-weight: 600; margin-top: .4rem; }

.edit-form input,
.edit-form textarea,
.setup select {
  width: 100%;
  padding: .7rem .85rem;
  font: inherit;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.edit-form textarea { resize: vertical; line-height: 1.5; }

.edit-form input:focus,
.edit-form textarea:focus,
.setup select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.edit-form .actions { margin-top: .6rem; }
.edit-form .actions [hidden] { display: none; }

.hint { margin: 0; color: var(--ink-faint); font-size: .9rem; }

/* --- study setup --------------------------------------------------------- */

.setup { display: flex; flex-direction: column; gap: .8rem; }
.setup[hidden] { display: none; }
.setup label { display: flex; flex-direction: column; gap: .3rem; }
.setup label.check { flex-direction: row; align-items: center; gap: .55rem; }
.setup .check input { width: 1.15rem; height: 1.15rem; accent-color: var(--accent); }
.setup .check:has(input:disabled) { color: var(--ink-faint); }

/* --- studying ------------------------------------------------------------ */

.run, .done { display: flex; flex-direction: column; gap: .9rem; }
.run[hidden], .done[hidden] { display: none; }

.progress { margin: 0; color: var(--ink-soft); }

.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  min-height: 13rem;
  padding: 1.5rem;
  font: inherit;
  color: var(--ink);
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: calc(var(--radius) * 1.4);
  cursor: pointer;
  text-align: center;
}

.card:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.card.is-back { background: var(--accent-soft); border-color: var(--accent); }

.card-side {
  font-size: .8rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.card-text {
  font-size: clamp(1.3rem, 5vw, 1.75rem);
  line-height: 1.35;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.rate { display: flex; gap: .5rem; }

.rate button {
  flex: 1;
  padding: .7rem .5rem;
  font: inherit;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.rate button:hover { border-color: var(--accent); }

.rate button[aria-pressed="true"] { border-width: 2px; font-weight: 600; }
.rate [data-rate="easy"][aria-pressed="true"]   { border-color: var(--accent); background: var(--accent-soft); }
.rate [data-rate="medium"][aria-pressed="true"] { border-color: var(--focus); background: var(--focus-soft); }
.rate [data-rate="hard"][aria-pressed="true"]   { border-color: var(--warn); background: var(--warn-soft); }

.done h3 { margin: 0; font-size: 1.2rem; }
.done p { margin: 0; }
.done .actions [hidden] { display: none; }

.help { color: var(--ink-soft); font-size: .93rem; }
.help summary { cursor: pointer; color: var(--ink); }
.help ol { padding-left: 1.2rem; }