:root {
  --bg: #0f1220;
  --card: #1a1f35;
  --panel: #222842;
  --accent: #6c7bff;
  --accent-hover: #8290ff;
  --text: #e8ebf5;
  --muted: #9aa3c0;
  --ok: #3ecf8e;
  --err: #ff6b7a;
}
* { box-sizing: border-box; }
/* The `hidden` attribute must win over class-level `display` rules
   (e.g. .downloads/.download), which otherwise override the UA default. */
[hidden] { display: none !important; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 16px;
  background: radial-gradient(1200px 600px at 50% -10%, #1c2240, var(--bg));
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}
.card {
  width: 100%;
  max-width: 560px;
  background: var(--card);
  border: 1px solid #2a3150;
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.card.wide { max-width: 820px; }
h1 { margin: 0 0 8px; font-size: 1.5rem; }
h2 { margin: 0 0 14px; font-size: 1.05rem; }
.lead { color: var(--muted); margin: 0 0 24px; }
.drop {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  border: 2px dashed #3a4470;
  border-radius: 14px;
  color: var(--muted);
  cursor: pointer;
  text-align: center;
  padding: 16px;
  transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--accent); background: rgba(108,123,255,.08); color: var(--text); }

/* 読み上げ台本（折りたたみ） */
.script {
  background: var(--panel);
  border-radius: 14px;
  margin: 0 0 24px;
}
.script > summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 20px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.script > summary::-webkit-details-marker { display: none; }
.script > summary::before {
  content: "▶";
  font-size: .7rem;
  color: var(--muted);
  transition: transform .15s ease;
}
.script[open] > summary::before { transform: rotate(90deg); }
.script-inner { padding: 0 20px 18px; }
.script-note {
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.6;
  margin: 0 0 14px;
}
.script-body p { margin: 0 0 8px; line-height: 1.7; }
.script-body p:last-child { margin-bottom: 0; }

/* アップロード / 録音 タブ */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  background: var(--panel);
  border-radius: 12px;
  padding: 4px;
}
.tab {
  flex: 1;
  width: auto;
  margin-top: 0;
  padding: 10px 12px;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
}
.tab:hover { background: rgba(108,123,255,.12); }
.tab.active { background: var(--accent); color: #fff; }
.tab.active:hover { background: var(--accent-hover); }

/* 録音：点線領域そのものがクリック可能なコントロール（.drop を継承） */
.rec-drop { font-variant-numeric: tabular-nums; }
/* カウントダウン中は数字を大きく表示 */
.rec-drop[data-state="counting"] {
  font-size: 3.4rem;
  font-weight: 700;
  color: var(--accent-hover);
}
/* 録音中は赤系で「停止できる」ことを示す */
.rec-drop[data-state="recording"] {
  border-color: var(--err);
  background: rgba(255, 107, 122, .08);
  color: var(--err);
  font-weight: 600;
}
.rec-drop[data-state="recording"]:hover {
  border-color: var(--err);
  background: rgba(255, 107, 122, .14);
  color: var(--err);
}
.rec-drop[data-state="done"] { color: var(--ok); }
.rec-playback { display: block; width: 100%; margin-top: 14px; }
button {
  margin-top: 16px;
  width: 100%;
  padding: 13px 18px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: background .15s, opacity .15s;
}
button:hover { background: var(--accent-hover); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.secondary { background: var(--panel); }
.option {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--muted);
  font-size: .9rem;
  cursor: pointer;
}
.option input[type="checkbox"] { width: auto; margin: 0; accent-color: var(--accent); }
.text-row { cursor: default; }
.text-row .text-prefix { white-space: nowrap; }
.text-row input[type="text"] {
  flex: 1;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--panel);
  background: var(--panel);
  color: var(--text);
  font-size: .95rem;
}
.status {
  margin-top: 20px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--panel);
  font-size: .95rem;
}
.status.working { color: var(--text); }
.status.done { color: var(--ok); }
.status.error { color: var(--err); }
.progress {
  margin-top: 12px;
  height: 10px;
  border-radius: 999px;
  background: var(--panel);
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  transition: width .2s ease;
}
.preview {
  margin: 20px 0 0;
}
.preview figcaption { margin-bottom: 8px; }
.preview canvas {
  display: block;
  width: 100%;
  height: auto;
  max-width: 360px;
  border-radius: 10px;
  border: 1px solid var(--panel);
}
.downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}
.download {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--ok);
  color: #06281b;
  font-weight: 700;
  text-decoration: none;
}

/* admin */
.panel {
  background: var(--panel);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 18px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 16px;
}
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
label {
  display: flex;
  gap: 6px;
  font-size: .85rem;
  color: var(--muted);
}
input[type="number"], input[type="file"], select {
  padding: 9px 11px;
  border-radius: 9px;
  border: 1px solid #3a4470;
  background: #161b30;
  color: var(--text);
  font-size: .95rem;
}
input[type="color"] {
  width: 46px;
  height: 34px;
  padding: 2px;
  border-radius: 8px;
  border: 1px solid #3a4470;
  background: #161b30;
  cursor: pointer;
}
.grid label.check { align-items: center; }
.grid label.check input[type="checkbox"] { width: auto; margin: 0; accent-color: var(--accent); }
.subhead { font-size: .95rem; margin: 16px 0 8px; color: var(--text); }
.checkbox-row { display: flex; align-items: center; gap: 6px; margin-top: 6px; font-size: .85rem; color: var(--muted); }
.checkbox-row input[type="checkbox"] { width: auto; margin: 0; accent-color: var(--accent); }
input[type="number"]:disabled { opacity: .5; cursor: not-allowed; }
.actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.actions button { width: auto; margin-top: 0; }
.muted { color: var(--muted); font-size: .9rem; }
a { color: var(--accent-hover); }