/* css/chords.css — 和弦库面板 / 和弦图样式（theory-chords 所有） */
/* v3 霓虹主题：颜色全部来自 css/base.css 的霓虹变量与 rgba 光效，不硬编码暖色。
   交互强调：左手和弦 = 青（--left-hand / --neon-cyan）；「加入」等次要动作用品红点缀；
   当前和弦用青→品红辉光。布局与尺寸与 v2 保持一致。 */

/* ------------------------------- 面板骨架 -------------------------------- */

.chord-library {
  min-height: 0;
}

.chord-library-body {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1 1 auto;
  padding: 10px 12px 8px;
  gap: 8px;
  overflow: hidden;
}

.chord-library-body.is-collapsed {
  display: none;
}

.chord-collapse-btn {
  line-height: 1;
  padding: 2px 7px;
  color: var(--text-dim);
  background: rgba(34, 245, 255, 0.04);
  border-color: rgba(34, 245, 255, 0.18);
}

.chord-collapse-btn:hover {
  color: var(--neon-cyan);
  background: rgba(34, 245, 255, 0.1);
  border-color: rgba(34, 245, 255, 0.65);
  box-shadow: 0 0 10px rgba(34, 245, 255, 0.22);
}

/* -------------------------------- 筛选区 --------------------------------- */

.chord-filters {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 0 0 auto;
}

.chord-search {
  width: 100%;
  font-size: 12px;
  padding: 6px 9px;
  background: rgba(4, 9, 18, 0.78);
  letter-spacing: 0.2px;
}

.chord-search:focus {
  border-color: rgba(34, 245, 255, 0.8);
  box-shadow: 0 0 0 2px rgba(34, 245, 255, 0.14), 0 0 16px rgba(34, 245, 255, 0.22);
}

.chord-root-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 4px;
}

.root-chip {
  font-family: var(--font);
  font-size: 10.5px;
  color: var(--text-dim);
  background: linear-gradient(180deg, rgba(14, 26, 45, 0.75) 0%, rgba(6, 12, 22, 0.85) 100%);
  border: 1px solid rgba(34, 245, 255, 0.16);
  border-radius: 6px;
  padding: 3px 2px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.14s, border-color 0.14s, color 0.14s, box-shadow 0.14s;
  user-select: none;
  line-height: 1.5;
}

.root-chip:hover {
  color: #d8fdff;
  background: rgba(34, 245, 255, 0.1);
  border-color: rgba(34, 245, 255, 0.55);
  box-shadow: 0 0 10px rgba(34, 245, 255, 0.2);
}

.root-chip.is-active {
  color: #04121b;
  background: linear-gradient(180deg, #9ffcff 0%, var(--neon-cyan) 48%, var(--neon-purple) 100%);
  border-color: rgba(34, 245, 255, 0.9);
  font-weight: 700;
  text-shadow: none;
  box-shadow: 0 0 12px rgba(34, 245, 255, 0.45), 0 0 22px rgba(166, 121, 255, 0.28);
}

.chord-filter-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chord-quality-select {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 12px;
  padding: 4px 6px;
  background: rgba(4, 9, 18, 0.78);
}

.chord-reset-btn {
  flex: 0 0 auto;
  color: var(--text-dim);
  background: rgba(34, 245, 255, 0.04);
  border-color: rgba(34, 245, 255, 0.2);
}

.chord-reset-btn:hover {
  color: #d8fdff;
  border-color: rgba(34, 245, 255, 0.6);
  background: rgba(34, 245, 255, 0.1);
  box-shadow: 0 0 12px rgba(34, 245, 255, 0.22);
}

/* ------------------------------- 结果计数 -------------------------------- */

.chord-list-count {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
  min-height: 15px;
}

/* -------------------------------- 卡片列表 -------------------------------- */

.chord-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: min-content;
  gap: 8px;
  align-content: start;
  padding: 1px 2px 2px 1px;
}

.chord-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 5px;
  border: 1px solid rgba(34, 245, 255, 0.14);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(13, 23, 41, 0.74) 0%, rgba(6, 11, 21, 0.88) 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  cursor: pointer;
  outline: none;
  transition: border-color 0.14s, box-shadow 0.14s, transform 0.1s, background 0.14s;
  min-width: 0;
}

/* 顶部霓虹渐变细线 */
.chord-card::after {
  content: "";
  position: absolute;
  left: 7px;
  right: 7px;
  top: 0;
  height: 1px;
  border-radius: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 245, 255, 0.38), rgba(255, 62, 232, 0.24), transparent);
  opacity: 0.5;
  pointer-events: none;
  transition: opacity 0.15s;
}

.chord-card:hover::after {
  opacity: 1;
}

.chord-card:hover {
  border-color: rgba(34, 245, 255, 0.55);
  background: linear-gradient(180deg, rgba(19, 34, 57, 0.86) 0%, rgba(8, 15, 28, 0.92) 100%);
  box-shadow: 0 0 16px rgba(34, 245, 255, 0.2), inset 0 0 20px rgba(34, 245, 255, 0.05);
}

.chord-card:active {
  transform: translateY(1px);
}

.chord-card:focus-visible {
  border-color: rgba(34, 245, 255, 0.8);
  box-shadow: 0 0 0 2px rgba(34, 245, 255, 0.2), 0 0 18px rgba(34, 245, 255, 0.28);
}

.chord-card.is-current {
  border-color: rgba(34, 245, 255, 0.72);
  background: linear-gradient(
    180deg,
    rgba(34, 245, 255, 0.14) 0%,
    rgba(166, 121, 255, 0.08) 42%,
    rgba(255, 62, 232, 0.05) 68%,
    rgba(8, 15, 28, 0.9) 100%
  );
  box-shadow:
    0 0 18px rgba(34, 245, 255, 0.26),
    0 0 34px rgba(255, 62, 232, 0.12),
    inset 0 0 22px rgba(34, 245, 255, 0.06);
}

.chord-card.is-current::after {
  height: 2px;
  opacity: 1;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta), var(--neon-purple));
  box-shadow: 0 0 8px rgba(34, 245, 255, 0.5), 0 0 12px rgba(255, 62, 232, 0.3);
}

.chord-card-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  pointer-events: none;
}

.chord-card-diagram .chord-diagram {
  display: block;
  width: 100%;
  max-width: 94px;
  height: auto;
  border-radius: 6px;
}

/* 当前和弦的图板加一层青色光晕（单张图，开销可忽略） */
.chord-card.is-current .chord-card-diagram .chord-diagram {
  filter: drop-shadow(0 0 6px rgba(34, 245, 255, 0.3));
}

.chord-card-name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  min-width: 0;
  padding: 0 1px;
}

.chord-card-symbol {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.2px;
  text-shadow: 0 0 10px rgba(34, 245, 255, 0.28);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chord-card.is-current .chord-card-symbol {
  color: #d8fdff;
  text-shadow: 0 0 10px rgba(34, 245, 255, 0.55), 0 0 18px rgba(255, 62, 232, 0.25);
}

.chord-card-current-badge {
  flex: 0 0 auto;
  font-size: 9px;
  font-weight: 800;
  color: #14051b;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
  border-radius: 999px;
  padding: 0 5px;
  line-height: 14px;
  box-shadow: 0 0 10px rgba(255, 62, 232, 0.45);
}

.chord-card-quality {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 1px;
}

.chord-card.is-current .chord-card-quality {
  color: #86c8e8;
}

.chord-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  margin-top: 1px;
}

.voicing-nav {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  min-width: 0;
}

.voicing-btn {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  width: 17px;
  height: 17px;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s, color 0.12s, border-color 0.12s, box-shadow 0.12s;
}

.voicing-btn:hover {
  color: var(--neon-cyan);
  background: rgba(34, 245, 255, 0.1);
  border-color: rgba(34, 245, 255, 0.45);
  box-shadow: 0 0 8px rgba(34, 245, 255, 0.22);
}

.voicing-btn:active {
  transform: translateY(1px);
}

.voicing-label {
  font-family: var(--mono);
  font-size: 9.5px;
  color: #6f8fb8;
  min-width: 22px;
  text-align: center;
  cursor: default;
}

/* 「＋加入」：品红点缀（右手动作色） */
.chord-add-btn {
  flex: 0 0 auto;
  padding: 1px 6px;
  font-size: 10px;
  line-height: 15px;
  color: #ffd7fb;
  background: rgba(255, 62, 232, 0.08);
  border: 1px solid rgba(255, 62, 232, 0.28);
  border-radius: 5px;
  transition: background 0.14s, border-color 0.14s, color 0.14s, box-shadow 0.14s;
}

.chord-add-btn:hover {
  color: #1b0418;
  background: linear-gradient(180deg, #ff9cf1 0%, var(--neon-magenta) 100%);
  border-color: rgba(255, 62, 232, 0.8);
  box-shadow: 0 0 12px rgba(255, 62, 232, 0.45);
}

.chord-add-btn:active {
  transform: translateY(1px);
}

.chord-empty {
  grid-column: 1 / -1;
  padding: 20px 6px;
}

.chord-library-hint {
  flex: 0 0 auto;
  font-size: 10px;
  line-height: 1.5;
  color: var(--muted);
  padding: 2px 1px 0;
}

/* 窄面板时单列，避免卡片挤压 */
@media (max-width: 1366px) {
  .chord-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .chord-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* -------------------------------- 和弦图 --------------------------------- */

.chord-diagram {
  overflow: visible;
  user-select: none;
}

/* 供外部容器（演奏台 / 曲谱识别）复用的尺寸适配 */
.deck-diagram .chord-diagram,
.score-chord-item .chord-diagram {
  max-width: 100%;
  height: auto;
}