/* ---- Warm-up Repository ---- */
.wu-wrap { max-width: 960px; margin: 0 auto; }

.wu-piano-scroll { overflow-x: auto; padding: 6px 2px 10px; -webkit-overflow-scrolling: touch; }
.wu-piano { display: flex; width: -moz-fit-content; width: fit-content; margin: 0 auto; user-select: none; touch-action: manipulation; }

.wu-key { cursor: pointer; }
.wu-white {
  position: relative; flex: none; width: 36px; height: 128px;
  background: #ffffff; border: 1px solid #b5b5b5; border-radius: 0 0 5px 5px;
  box-shadow: inset 0 -6px 8px rgba(0,0,0,0.06);
}
.wu-white:active { background: #f0f0f0; }
.wu-black {
  position: absolute; top: -1px; right: -12px; width: 24px; height: 78px; z-index: 2;
  background: #2b2b2b; border: 1px solid #111; border-radius: 0 0 4px 4px;
  box-shadow: inset 0 -5px 6px rgba(255,255,255,0.12);
}
.wu-black:active { background: #444; }

.wu-keylabel {
  position: absolute; bottom: 4px; left: 0; right: 0; text-align: center;
  font-size: 0.62em; color: #999; pointer-events: none;
}

/* melody markers */
.wu-white.wu-mark { background: #dcecfb; }
.wu-black.wu-mark { background: #3d6c9e; }
.wu-key.wu-startkey::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  width: 9px; height: 9px; border-radius: 50%; background: #27ae60; pointer-events: none;
}
.wu-white.wu-startkey::after { bottom: 20px; }
.wu-black.wu-startkey::after { bottom: 8px; }
/* red lines: keys outside the warm-up's healthy range */
.wu-white.wu-red { background: #f6dddd; border-color: #d9a7a7; }
.wu-black.wu-red { background: #6e3131; border-color: #4a1f1f; }
.wu-white.wu-playing { background: #ffe9a8; }
.wu-black.wu-playing { background: #b8860b; }

/* controls */
.wu-controls {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 8px; margin: 10px 0 4px;
}
.wu-btn {
  border: 1px solid rgba(0,0,0,0.25); border-radius: 18px; background: #fff;
  padding: 4px 14px; font-size: 0.9em; cursor: pointer; transition: background 0.15s;
}
.wu-btn:hover { background: #ecf0f1; }
.wu-tr-label { font-size: 0.9em; color: #555; min-width: 100px; text-align: center; }
.wu-tr-label.wu-tr-blocked { color: #c0392b; font-weight: bold; }
.wu-start-label { font-size: 0.9em; font-weight: bold; color: #27ae60; }

.wu-nowline { text-align: center; margin: 8px 0 16px; color: #555; min-height: 1.5em; }
.wu-nowline .wu-syl { display: inline-block; padding: 0 3px; }
.wu-nowline .wu-syl.wu-syl-on { color: #000; font-weight: bold; background: #ffe9a8; border-radius: 4px; }
.wu-nowline .wu-now-title { font-weight: bold; margin-right: 10px; }

/* cards */
.wu-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; align-items: start; }
.wu-card {
  border: 1px solid rgba(0,0,0,0.12); border-radius: 10px; padding: 12px 14px;
  box-shadow: 2px 3px 6px rgba(0,0,0,0.08); cursor: pointer; background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.wu-card:hover { border-color: rgba(0,0,0,0.3); }
.wu-card.wu-selected { border: 2px solid #3d6c9e; box-shadow: 2px 3px 8px rgba(61,108,158,0.25); padding: 11px 13px; }
.wu-card-title { font-weight: bold; margin-bottom: 4px; }
.wu-card-tempo { font-weight: normal; font-size: 0.8em; color: #888; float: right; }
.wu-card-desc { font-size: 0.85em; color: #666; margin-bottom: 8px; }
.wu-card-lyrics { font-size: 0.9em; font-style: italic; color: #444; margin-bottom: 10px; }
.wu-play-btn {
  border: 1px solid #27ae60; color: #27ae60; background: #fff; border-radius: 18px;
  padding: 3px 16px; font-size: 0.9em; cursor: pointer; transition: all 0.15s;
}
.wu-play-btn:hover { background: #eafaf1; }
.wu-play-btn.wu-playing-btn { border-color: #c0392b; color: #c0392b; }

/* admin editing */
.wu-edit-btn {
  border: 1px solid rgba(0,0,0,0.25); color: #555; background: #fff; border-radius: 18px;
  padding: 3px 14px; font-size: 0.9em; cursor: pointer; margin-left: 8px; transition: all 0.15s;
}
.wu-edit-btn:hover { background: #ecf0f1; }
.wu-add-btn { display: block; margin: 0 auto 14px; }
.wu-modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 2000;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.wu-modal {
  background: #fff; border-radius: 10px; padding: 18px 20px; width: 100%; max-width: 460px;
  max-height: 90vh; overflow-y: auto; box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}
.wu-modal h4 { margin: 0 0 12px; }
.wu-field { margin-bottom: 10px; }
.wu-field label { display: block; font-size: 0.8em; color: #666; margin-bottom: 2px; }
.wu-input { width: 100%; border: 1px solid #ccc; border-radius: 6px; padding: 6px 8px; font-size: 0.95em; }
.wu-modal-err { color: #c0392b; font-size: 0.85em; min-height: 1.2em; margin: 6px 0; }
.wu-modal-btns { display: flex; gap: 10px; justify-content: flex-end; }
.wu-save-btn { border-color: #27ae60; color: #27ae60; }
.wu-save-btn:hover { background: #eafaf1; }

@media (max-width: 767px) {
  .wu-white { width: 30px; height: 110px; }
  .wu-black { width: 20px; right: -10px; height: 66px; }
}