/* 在线音频剪辑 — 页面样式。变量沿用 site.css。 */

.ac-page main { max-width: 1000px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover { filter: brightness(1.06); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; filter: none; }

.btn-alt {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.btn-alt:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); filter: none; }

.ac-app {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

/* ---------- 拖放区 ---------- */

.ac-drop {
  padding: 2.2rem 1.25rem;
  text-align: center;
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  transition: border-color 0.15s, background 0.15s;
}

.ac-drop.is-over { border-color: var(--accent); background: var(--accent-pale); }
.ac-drop p { margin: 0.35rem 0; }
.ac-drop-hint { font-size: 0.85rem; color: var(--text-dim); }

.ac-err {
  margin-top: 0.9rem !important;
  padding: 0.55rem 0.75rem;
  border: 1px solid #e8b4b4;
  border-radius: 8px;
  background: #fdf3f3;
  color: #a03030;
  font-size: 0.85rem;
}

/* ---------- 编辑区 ---------- */

.ac-editor {
  display: grid;
  gap: 1rem;
  padding: 1.15rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.ac-meta { font-size: 0.85rem; color: var(--text-dim); display: flex; flex-wrap: wrap; gap: 0.35rem 1rem; }
.ac-meta b { color: var(--text); font-weight: 600; }

.ac-wave-wrap { position: relative; }

#ac-wave {
  display: block;
  width: 100%;
  height: 220px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  cursor: crosshair;
  touch-action: none;
}

.ac-empty {
  position: absolute;
  inset-inline: 0;
  bottom: 0.6rem;
  margin: 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
  pointer-events: none;
}

.ac-transport,
.ac-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.ac-spacer { flex: 1 1 auto; }

.ac-time { font-variant-numeric: tabular-nums; font-size: 0.88rem; color: var(--text-dim); }
.ac-time b { color: var(--text); }
.ac-selinfo { font-size: 0.85rem; color: var(--text-dim); }

.ac-tools {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.ac-toolgroup {
  display: grid;
  gap: 0.55rem;
  align-content: start;
  padding: 0.9rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.ac-toolgroup h2 {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.ac-field { display: grid; gap: 0.3rem; font-size: 0.82rem; color: var(--text-dim); }
.ac-field > span { display: flex; justify-content: space-between; gap: 0.5rem; }
.ac-field b { color: var(--text); font-variant-numeric: tabular-nums; }
.ac-field input[type="range"] { width: 100%; accent-color: var(--accent); }

.ac-field-inline { display: inline-flex; align-items: center; gap: 0.5rem; }
.ac-field-inline select {
  min-height: 40px;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
}

.ac-export { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; }
.ac-status { margin: 0; min-height: 1.2em; font-size: 0.85rem; color: var(--ok); }

@media (max-width: 620px) {
  #ac-wave { height: 170px; }
  .ac-tools { grid-template-columns: minmax(0, 1fr); }
}