/* ============================================================
   The Mnemonicon — heritage look: ink on cream, classic serif.
   ============================================================ */

:root {
  --cream: #f6f1e3;
  --cream-dark: #ece4d0;
  --ink: #2b2118;
  --ink-soft: #5c4f42;
  --accent: #7a1f1f;      /* deep bookbinding red */
  --gold: #a67c2e;
  --green: #3e5c3a;
  --line: #d8cdb4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.55;
}

main { max-width: 720px; margin: 0 auto; padding: 1rem 1.25rem 4rem; }

/* ---------- masthead ---------- */
.masthead {
  text-align: center;
  padding: 2rem 1rem 0.5rem;
  border-bottom: 3px double var(--ink);
  background: var(--cream);
}
.masthead h1 {
  margin: 0;
  font-size: 2.4rem;
  letter-spacing: 0.06em;
  font-variant: small-caps;
}
.tagline { margin: 0.2rem 0 1rem; font-style: italic; color: var(--ink-soft); }

nav { display: flex; justify-content: center; gap: 0.5rem; }
.nav-btn {
  font: inherit; font-variant: small-caps; letter-spacing: 0.05em;
  background: none; border: none; border-bottom: 3px solid transparent;
  padding: 0.4rem 1rem; cursor: pointer; color: var(--ink-soft);
}
.nav-btn.active { color: var(--ink); border-bottom-color: var(--accent); }

.badge {
  background: var(--accent); color: var(--cream);
  border-radius: 999px; padding: 0 0.5em; font-size: 0.8em;
}

/* ---------- stats ---------- */
.stats-row {
  display: flex; gap: 0.75rem; flex-wrap: wrap;
  justify-content: center; margin: 1.25rem 0;
}
.stat {
  background: var(--cream-dark); border: 1px solid var(--line);
  padding: 0.4rem 0.9rem; text-align: center; min-width: 90px;
}
.stat b { display: block; font-size: 1.3rem; }
.stat span { font-size: 0.75rem; color: var(--ink-soft); font-variant: small-caps; }

/* ---------- toolbar & buttons ---------- */
.toolbar { display: flex; gap: 0.5rem; align-items: center; margin-bottom: 1rem; }
.spacer { flex: 1; }

button { font-family: inherit; cursor: pointer; }
.primary {
  background: var(--ink); color: var(--cream); border: 1px solid var(--ink);
  padding: 0.5rem 1.1rem; font-size: 1rem;
}
.primary:hover { background: var(--accent); border-color: var(--accent); }
.ghost {
  background: none; border: 1px solid var(--line); color: var(--ink-soft);
  padding: 0.45rem 0.9rem;
}
.ghost:hover { border-color: var(--ink-soft); color: var(--ink); }
.danger { color: var(--accent); }

/* ---------- tag bar & collections ---------- */
.tag-bar { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.75rem; }
.tag-chip {
  background: none; border: 1px solid var(--line); border-radius: 999px;
  padding: 0.15rem 0.8rem; font-size: 0.85rem; color: var(--ink-soft);
  font-variant: small-caps; letter-spacing: 0.04em;
}
.tag-chip:hover { border-color: var(--ink-soft); color: var(--ink); }
.tag-chip.active { background: var(--ink); border-color: var(--ink); color: var(--cream); }
.collection-actions { display: flex; gap: 0.5rem; margin-bottom: 1rem; }

/* ---------- piece list ---------- */
.piece-list { list-style: none; margin: 0; padding: 0; }
.piece-list li {
  display: flex; align-items: baseline; gap: 0.6rem;
  padding: 0.7rem 0.4rem; border-bottom: 1px solid var(--line);
  cursor: pointer;
}
.piece-list li:hover { background: var(--cream-dark); }
.piece-list .p-title { font-weight: bold; flex: 1; }
.piece-list .p-source { color: var(--ink-soft); font-style: italic; font-size: 0.9rem; }
.piece-list .p-due { font-size: 0.8rem; color: var(--ink-soft); white-space: nowrap; }
.piece-list .p-due.overdue { color: var(--accent); font-weight: bold; }

.chip {
  font-size: 0.7rem; font-variant: small-caps; letter-spacing: 0.05em;
  border: 1px solid; border-radius: 999px; padding: 0.05rem 0.6rem; white-space: nowrap;
}
.chip.learning  { color: var(--gold);  border-color: var(--gold); }
.chip.memorized { color: var(--green); border-color: var(--green); }
.chip.maintained{ color: var(--ink);   border-color: var(--ink); }

.empty-note { text-align: center; color: var(--ink-soft); font-style: italic; margin-top: 2.5rem; }

/* ---------- forms ---------- */
form label { display: block; margin-bottom: 0.9rem; font-variant: small-caps; letter-spacing: 0.03em; }
form small { font-variant: normal; color: var(--ink-soft); }
input[type="text"], select, textarea {
  display: block; width: 100%; margin-top: 0.25rem;
  font-family: inherit; font-size: 1rem; color: var(--ink);
  background: #fffdf6; border: 1px solid var(--line); padding: 0.5rem;
}
textarea { resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.form-actions { display: flex; gap: 0.5rem; margin-top: 1.25rem; }

/* ---------- detail & recitation ---------- */
.meta { color: var(--ink-soft); font-style: italic; margin: 0.2rem 0 1rem; }
.notes { color: var(--ink-soft); border-left: 3px solid var(--line); padding-left: 0.8rem; }

.piece-text {
  font-family: inherit; font-size: 1.05rem; line-height: 1.8;
  background: #fffdf6; border: 1px solid var(--line);
  padding: 1.25rem 1.5rem; white-space: pre-wrap; overflow-x: auto;
}
.recite { min-height: 8rem; }
.hidden-line { color: transparent; text-shadow: 0 0 8px var(--ink-soft); cursor: pointer; }
.hidden-line:hover { text-shadow: 0 0 6px var(--ink); }

/* ---------- record & loop ---------- */
.audio-panel {
  border: 1px solid var(--line); background: var(--cream-dark);
  padding: 1rem 1.25rem; margin: 1.25rem 0;
}
.audio-panel h3 {
  margin: 0 0 0.25rem; font-variant: small-caps; letter-spacing: 0.05em;
  font-size: 1rem;
}
.audio-panel .form-actions { margin-top: 0.75rem; }
.rec-live {
  background: var(--accent); border-color: var(--accent);
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.65; } }

#r-loop { display: block; margin: 0.75rem auto 0; }

/* ---------- review ---------- */
.mode-row { display: flex; gap: 0.4rem; margin: 0.75rem 0; }
.mode-btn {
  background: none; border: 1px solid var(--line); padding: 0.35rem 0.8rem;
  font-size: 0.85rem; color: var(--ink-soft); font-variant: small-caps;
}
.mode-btn.active { border-color: var(--ink); color: var(--ink); background: var(--cream-dark); }

.grade-hint { text-align: center; font-style: italic; color: var(--ink-soft); margin: 1.25rem 0 0.5rem; }
.grade-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; }
.grade-btn {
  padding: 0.6rem 0.25rem; font-size: 1rem; font-variant: small-caps;
  border: 1px solid var(--line); background: #fffdf6;
}
.grade-btn small { display: block; font-variant: normal; font-size: 0.7re