:root {
  --bg: #0b0b0d;
  --panel: #16161a;
  --fg: #f2f2f2;
  --muted: #8b8b93;
  --accent: #35d07f;
  --accent-2: #ffd400;
  --danger: #ff5d5d;
  --line: #26262c;
  --hud-color: #ffffff;
  --hud-size: 12vw;
  --topbar-h: 48px;
  --player-h: 56.25vw;
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Segoe UI", Roboto, sans-serif;
  font-size: 16px; line-height: 1.4; overscroll-behavior: none;
  padding-top: calc(var(--topbar-h) + var(--sat));
}
button { font: inherit; color: var(--fg); background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; min-height: 44px; cursor: pointer; }
button:active { filter: brightness(1.3); }
button.primary { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 700; }
button.small { min-height: 36px; padding: 6px 10px; font-size: 14px; }
input, select, textarea { font: inherit; color: var(--fg); background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-height: 44px; width: 100%; }
textarea { min-height: 200px; resize: vertical; }
label { display: block; margin: 8px 0; }
label input { margin-top: 4px; }
.muted { color: var(--muted); font-size: 14px; }
.mono { font-variant-numeric: tabular-nums; min-width: 4.5em; text-align: center; }
.row { display: flex; gap: 8px; align-items: center; margin: 10px 0; }
.spacer { flex: 1; }
h2.list-title { font-size: 15px; color: var(--muted); font-weight: 600; margin: 18px 0 6px; display: flex; align-items: center; gap: 8px; }
.export-link { margin-left: auto; font-size: 12px; font-weight: 400; color: var(--accent); text-decoration: none; border: 1px solid var(--line); border-radius: 8px; padding: 4px 8px; }
main { padding: 0 16px calc(24px + var(--sab)); max-width: 900px; margin: 0 auto; }
.view { display: none; }
body.mode-library #view-library { display: block; }
body.mode-player #view-player { display: block; }
body.mode-login #view-login { display: block; }
body.mode-login #topbar, body.mode-login #player-wrap { display: none; }
.login-view { text-align: center; padding-top: 18vh; }
.login-view h1 { font-size: 26px; margin: 0 0 12px; }
.login-view p { max-width: 520px; margin: 0 auto 16px; }
button.big { font-size: 18px; padding: 14px 28px; }

/* ---- top bar */
#topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  height: calc(var(--topbar-h) + var(--sat)); padding-top: var(--sat);
  display: flex; background: rgba(11,11,13,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
}
#topbar .tab { flex: 1; border: 0; border-radius: 0; background: transparent; color: var(--muted); font-weight: 600; }
#topbar .tab.active { color: var(--fg); box-shadow: inset 0 -3px 0 var(--accent); }
#topbar .hud-btn { flex: 0 0 104px; color: var(--accent-2); white-space: nowrap; padding-left: 8px; padding-right: 8px; }

/* ---- player (fixed, size varies by mode) */
#player-wrap { position: fixed; z-index: 25; background: #000; overflow: hidden; border-radius: 10px; transition: width .2s, height .2s, top .2s, right .2s, bottom .2s; }
#player-wrap iframe, #player-wrap #yt { width: 100%; height: 100%; display: block; }
body.mode-player #player-wrap { top: calc(var(--topbar-h) + var(--sat)); left: 0; right: 0; width: 100%; height: var(--player-h); max-height: 42vh; border-radius: 0; }
body.mode-library #player-wrap { right: 12px; bottom: calc(12px + var(--sab)); width: 176px; height: 99px; box-shadow: 0 6px 20px rgba(0,0,0,.6); }
body.mode-library #player-wrap.mini.idle { display: none; }
/* HUD 中は既定で動画を出さない (音声だけ)。再生を止めないため DOM からは外さず、極小・ほぼ透明にする */
body.mode-hud #player-wrap { left: 0; bottom: 0; width: 4px; height: 4px; opacity: .02; border-radius: 0; pointer-events: none; }
body.mode-hud.hud-show-video #player-wrap { left: 8px; bottom: calc(8px + var(--sab)); width: 200px; height: 113px; opacity: .6; pointer-events: auto; }
@media (orientation: landscape) {
  body.mode-player #player-wrap { width: 46vw; max-height: none; height: calc(46vw * 9 / 16); left: 0; right: auto; }
  body.mode-player #view-player { margin-left: 46vw; padding-left: 12px; }
  body.mode-player #view-player #now-playing { margin-top: 0; }
}
#player-cover { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.6); }
#player-cover[hidden] { display: none; }
#btn-big-play { font-size: 20px; padding: 14px 28px; background: var(--accent); color: #000; border: 0; }

/* ---- library layout (スマホ: 縦積み) */
.lib-side .panel { margin: 10px 0; }
.lib-side .panel-title { display: none; }
.lib-side .playlist-row { display: block; }
.lib-side .pl-actions { margin: 8px 0 0; }
.lib-side .pl-actions button { flex: 1; }
#google-box .acct-actions { flex-wrap: wrap; }
#google-section { margin: 8px 0; }
#google-playlists button.small { white-space: nowrap; }

/* ---- playlist nav (PC ではクリック式の一覧、スマホでは select を使う) */
.pl-nav { display: none; list-style: none; margin: 0; padding: 0; flex: 0 0 100%; }
.pl-nav li { display: flex; align-items: center; gap: 8px; padding: 9px 10px; border-radius: 10px; cursor: pointer; color: var(--muted); }
.pl-nav li:hover { background: rgba(255,255,255,.05); color: var(--fg); }
.pl-nav li.active { background: rgba(53,208,127,.12); color: var(--fg); font-weight: 600; }
.pl-nav .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pl-nav .count { font-size: 12px; color: var(--muted); }
#add-target { font-size: 12px; margin: -4px 0 8px; }
.menu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 8px 0 12px; }
button.danger { color: var(--danger); border-color: rgba(255,93,93,.4); }

/* ---- library lists */
.list { list-style: none; margin: 0; padding: 0; }
.list li { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }
.list img { width: 72px; height: 40px; object-fit: cover; border-radius: 6px; background: #222; flex: none; }
.list .info { flex: 1; min-width: 0; }
.list .title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.list .sub { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.list button.icon { min-height: 40px; min-width: 40px; padding: 0 10px; }
.list li.playing .title { color: var(--accent); }
.badge { display: inline-block; font-size: 11px; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--line); color: var(--muted); margin-right: 4px; }
.badge.ready { color: var(--accent); border-color: var(--accent); }
.badge.fetching, .badge.pending { color: var(--accent-2); border-color: var(--accent-2); }
.badge.error, .badge.none { color: var(--danger); border-color: var(--danger); }
.badge.noembed { color: var(--danger); }
#search-form button { white-space: nowrap; flex: none; }
#search-results:empty { display: none; }
#search-results li { background: rgba(53,208,127,.05); }

/* ---- player view */
body.mode-player #view-player { padding-top: calc(var(--player-h) + 8px); }
@media (min-width: 900px) { :root { --player-h: 380px; } }
@media (max-height: 700px) and (orientation: portrait) { :root { --player-h: 42vh; } }
@media (orientation: landscape) { body.mode-player #view-player { padding-top: 8px; } }
.np-title { font-weight: 700; font-size: 17px; margin-top: 6px; }
#lyrics-panel { position: relative; height: 46vh; overflow: hidden; margin: 8px 0; mask-image: linear-gradient(transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(transparent, #000 12%, #000 88%, transparent); }
@media (orientation: landscape) { #lyrics-panel { height: calc(100vh - var(--topbar-h) - var(--sat) - 200px); } }
#lyrics-lines { transition: transform .25s ease-out; will-change: transform; padding-top: 0; }
#lyrics-lines.jump { transition: none; }
.lyric-line { padding: 6px 0; font-size: 20px; color: var(--muted); text-align: center; min-height: 1.4em; transition: color .15s, transform .15s; }
.lyric-line.cur { color: var(--fg); font-weight: 700; font-size: 26px; }
.lyric-line.near { color: #c8c8cf; }
.lyric-line.empty { opacity: .3; }
.lyric-line { cursor: pointer; }
.lyrics-hint { font-size: 12px; text-align: center; margin: 2px 0 6px; }
#lyrics-empty { text-align: center; padding-top: 30px; }
#lyrics-empty button { margin-top: 8px; }
.song-actions { flex-wrap: wrap; }

/* =====================================================================
   スマホ (幅 899px 以下): 縦・横それぞれ専用レイアウト
   ===================================================================== */
.only-phone { display: none; }
@media (max-width: 899px) {
  :root { --ctl-h: 64px; }
  .only-phone { display: inline-block; }
  main { padding-left: 12px; padding-right: 12px; }

  /* 操作バーは画面下に固定 (再生・前後・オフセット・その他) */
  body.mode-player #controls {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 28; margin: 0;
    height: calc(var(--ctl-h) + var(--sab)); padding: 8px 10px calc(8px + var(--sab));
    background: rgba(11,11,13,.96); border-top: 1px solid var(--line); backdrop-filter: blur(8px); gap: 6px;
  }
  body.mode-player #controls button { min-width: 44px; padding: 8px 10px; }
  body.mode-player #controls .spacer { flex: 1; }
  body.mode-player #controls .mono { min-width: 3.6em; font-size: 14px; }
  /* その他の操作: 下からせり上がるパネル */
  #more-panel { display: none; position: fixed; left: 0; right: 0; bottom: calc(var(--ctl-h) + var(--sab)); z-index: 27; margin: 0;
    background: var(--panel); border-top: 1px solid var(--line); padding: 10px 12px 12px; box-shadow: 0 -10px 30px rgba(0,0,0,.5); }
  #more-panel.open { display: block; }
  #more-panel .row { margin: 6px 0; }
  #more-panel .song-actions button { flex: 1 1 auto; }
  body.mode-player #view-player { padding-bottom: calc(var(--ctl-h) + var(--sab) + 8px); }

  /* --- 縦: 動画 → 曲名 → 歌詞 (残り全部) */
  @media (orientation: portrait) {
    body.mode-player #player-wrap { top: calc(var(--topbar-h) + var(--sat)); left: 0; right: 0; width: 100%; height: var(--player-h); max-height: 38vh; }
    body.mode-player #view-player { padding-top: calc(min(var(--player-h), 38vh) + 6px); }
    #now-playing { display: flex; align-items: baseline; gap: 8px; min-height: 28px; }
    .np-title { font-size: 16px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    #np-sub { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: none; max-width: 40%; }
    #lyrics-panel { height: calc(100vh - var(--topbar-h) - var(--sat) - min(var(--player-h), 38vh) - 34px - var(--ctl-h) - var(--sab) - 40px); margin: 4px 0 0; }
    .lyric-line { font-size: 19px; }
    .lyric-line.cur { font-size: 25px; }
  }

  /* --- 横: 左に動画、右に曲名 + 歌詞 */
  @media (orientation: landscape) {
    :root { --topbar-h: 40px; }
    #topbar .tab { font-size: 14px; }
    body.mode-player #player-wrap { top: calc(var(--topbar-h) + var(--sat) + 8px); left: 8px; right: auto; width: 42vw; height: calc(42vw * 9 / 16); max-height: none; border-radius: 8px; }
    body.mode-player #view-player { margin-left: calc(42vw + 8px); padding: 8px 0 calc(var(--ctl-h) + var(--sab)) 12px; }
    #now-playing { display: flex; align-items: baseline; gap: 8px; }
    .np-title { font-size: 15px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    #np-sub { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: none; max-width: 40%; }
    #lyrics-panel { height: calc(100vh - var(--topbar-h) - var(--sat) - 30px - var(--ctl-h) - var(--sab) - 34px); margin: 2px 0 0; }
    .lyric-line { font-size: 17px; padding: 4px 0; }
    .lyric-line.cur { font-size: 22px; }
    /* ライブラリは左右 2 分割 */
    body.mode-library #view-library { display: flex; gap: 14px; align-items: flex-start; padding-top: 8px; }
    .lib-side { flex: 0 0 38%; }
    .lib-main { flex: 1 1 auto; min-width: 0; }
    .lib-side .panel { margin: 0 0 10px; }
    body.mode-library #player-wrap { width: 150px; height: 84px; }
    .list img { width: 60px; height: 34px; }
    /* ログイン画面 */
    .login-view { padding-top: 8vh; }
  }
}

/* ---- HUD */
#hud { position: fixed; inset: 0; z-index: 40; background: #000; display: none; }
body.mode-hud #hud { display: block; }
body.mode-hud #topbar, body.mode-hud main { display: none; }
#hud-lines { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 4vh 3vw; gap: 3vh; text-align: center; }
#hud-lines.flip-v { transform: scaleY(-1); }
#hud-lines.flip-h { transform: scaleX(-1); }
#hud-lines.flip-rot { transform: rotate(180deg); }
#hud-lines.flip-none { transform: none; }
.hud-line { color: var(--hud-color); font-weight: 800; line-height: 1.15; letter-spacing: .02em; word-break: break-word; text-shadow: 0 0 2px #000; }
.hud-line.now { font-size: var(--hud-size); }
.hud-line.next { font-size: calc(var(--hud-size) * .55); opacity: .55; }
@media (orientation: landscape) { :root { --hud-size: 8vw; } }
#hud-controls { position: absolute; left: 0; right: 0; top: 0; display: flex; flex-wrap: wrap; gap: 6px; padding: calc(8px + var(--sat)) 8px 8px; background: rgba(0,0,0,.85); transition: opacity .2s; z-index: 2; }
#hud-controls.hidden-ctl { opacity: 0; pointer-events: none; }
#hud-controls button { min-height: 44px; }
.hud-hint { position: absolute; bottom: calc(10px + var(--sab)); left: 0; right: 0; text-align: center; color: #555; font-size: 12px; pointer-events: none; padding: 0 12px; z-index: 3; }
.hud-hint.warn { color: var(--accent-2); font-size: 15px; font-weight: 700; background: rgba(0,0,0,.8); padding: 10px 12px; }

/* ---- misc */
dialog { background: var(--panel); color: var(--fg); border: 1px solid var(--line); border-radius: 14px; width: min(92vw, 560px); padding: 16px; }
dialog::backdrop { background: rgba(0,0,0,.7); }
dialog h3 { margin: 0 0 8px; }
#toast { position: fixed; left: 50%; bottom: calc(24px + var(--sab)); transform: translateX(-50%); background: #222; color: #fff; padding: 10px 16px; border-radius: 10px; z-index: 60; max-width: 90vw; font-size: 14px; box-shadow: 0 6px 20px rgba(0,0,0,.6); }
#toast[hidden] { display: none; }
#debug-log { position: fixed; left: 0; right: 0; bottom: 0; max-height: 30vh; overflow: auto; background: rgba(0,0,0,.85); color: #9f9; font-size: 11px; margin: 0; padding: 6px; z-index: 70; white-space: pre-wrap; }
#debug-log[hidden] { display: none; }

/* =====================================================================
   PC (幅 900px 以上): サイドバー + メインの 2 カラム。スマホ用の指定を上書き
   ===================================================================== */
@media (min-width: 900px) {
  :root { --topbar-h: 56px; --pc-video-w: 560px; --pc-video-h: 315px; --pc-gap: 24px; }
  body { font-size: 15px; }
  main { max-width: 1320px; padding: 0 var(--pc-gap) 40px; }

  /* ヘッダー: 左にアプリ名、中央にタブ、右に歌詞画面 */
  #topbar { padding-left: var(--pc-gap); padding-right: var(--pc-gap); gap: 4px; align-items: stretch; }
  #topbar::before { content: "Car Karaoke HUD"; align-self: center; font-weight: 800; letter-spacing: .02em; color: var(--fg); margin-right: 28px; font-size: 16px; white-space: nowrap; }
  #topbar .tab { flex: 0 0 auto; padding: 0 22px; font-size: 15px; }
  #topbar .tab.active { box-shadow: inset 0 -3px 0 var(--accent); }
  #topbar .hud-btn { margin-left: auto; flex: 0 0 auto; align-self: center; height: 38px; min-height: 0; border: 1px solid rgba(255,212,0,.35); border-radius: 10px; padding: 0 16px; background: rgba(255,212,0,.06); }

  /* ---- ライブラリ: 左サイドバー (リスト選択 / Google) + 右メイン (検索 / 曲一覧) */
  body.mode-library #view-library { display: flex; gap: 32px; align-items: flex-start; padding-top: 20px; }
  .lib-side { flex: 0 0 300px; position: sticky; top: calc(var(--topbar-h) + 20px); display: flex; flex-direction: column; gap: 16px; }
  .lib-main { flex: 1 1 auto; min-width: 0; }
  .lib-side .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
  .lib-side .panel-title { font-size: 12px; color: var(--muted); font-weight: 600; letter-spacing: .04em; margin-bottom: 8px; }
  .lib-side .playlist-row select { display: none; }
  .lib-side .playlist-row .pl-nav { display: block; max-height: 42vh; overflow: auto; margin: 0 0 10px; }
  .lib-side .pl-actions { margin: 0; }
  .lib-side .pl-actions button { flex: 1; min-height: 40px; }
  .lib-side .pl-actions button:first-child { flex: 2; }
  #google-box #google-email { font-size: 13px; word-break: break-all; margin-bottom: 8px; }
  #google-box .acct-actions { flex-wrap: wrap; margin: 0; }
  #google-box .acct-actions button { flex: 1 1 45%; }
  #google-box #google-login-row { margin: 0; }
  #google-box #google-login-row button { flex: 1; white-space: normal; text-align: center; }
  #search-form { margin: 0 0 6px; }
  #search-form input { font-size: 16px; min-height: 48px; }
  #search-form button { min-height: 48px; padding: 0 22px; white-space: nowrap; }
  #search-results { margin-bottom: 12px; }
  #google-section { margin: 8px 0 16px; padding: 12px 14px; border: 1px solid rgba(53,208,127,.3); border-radius: 14px; background: rgba(53,208,127,.04); }
  #google-playlists { max-height: 56vh; overflow: auto; }
  #google-playlists button.small { white-space: nowrap; }
  h2.list-title { margin-top: 12px; }
  .list li { padding: 10px 12px; border: 1px solid var(--line); border-bottom: 1px solid var(--line); border-radius: 12px; margin-bottom: 8px; background: rgba(255,255,255,.015); transition: background .12s, border-color .12s; }
  .list li:hover { background: rgba(255,255,255,.04); border-color: #34343c; }
  .list img { width: 104px; height: 58px; border-radius: 8px; }
  .list .title { font-size: 16px; white-space: normal; }
  .list .sub { font-size: 13px; }
  .list button.icon { min-height: 40px; min-width: 44px; }
  .list li.playing { border-color: rgba(53,208,127,.5); background: rgba(53,208,127,.06); }
  body.mode-library #player-wrap { width: 320px; height: 180px; right: var(--pc-gap); bottom: var(--pc-gap); border-radius: 12px; }

  /* ---- プレイヤー: 左 (動画 + 曲情報 + 操作) / 右 (歌詞) */
  body.mode-player main { max-width: 1320px; }
  body.mode-player #player-wrap { top: calc(var(--topbar-h) + var(--sat) + 20px); left: max(var(--pc-gap), calc((100vw - 1320px) / 2 + var(--pc-gap))); right: auto; width: var(--pc-video-w); height: var(--pc-video-h); max-height: none; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.5); }
  body.mode-player #view-player {
    display: grid; grid-template-columns: var(--pc-video-w) minmax(0, 1fr); grid-template-rows: auto auto auto 1fr; column-gap: 40px; align-items: start;
    margin: 0; padding: calc(20px + var(--pc-video-h) + 16px) 0 0 0;
    grid-template-areas:
      "np     lyrics"
      "ctl    lyrics"
      "modes  lyrics"
      "rest   lyrics";
  }
  body.mode-player #view-player > #now-playing { grid-area: np; margin: 0 0 4px; }
  body.mode-player #view-player > #lyrics-panel { grid-area: lyrics; margin: 0; margin-top: calc(-1 * var(--pc-video-h) - 16px); height: calc(100vh - var(--topbar-h) - var(--sat) - 40px); }
  body.mode-player #view-player > #controls { grid-area: ctl; margin: 6px 0; flex-wrap: wrap; }
  body.mode-player #view-player > #more-panel { grid-area: modes; margin: 0; }
  #more-panel .row { margin: 6px 0; }
  body.mode-player #controls button { min-width: 52px; }
  body.mode-player #controls .spacer { flex: 0 0 8px; }
  .np-title { font-size: 20px; }
  body.mode-player .lyric-line { font-size: 22px; padding: 8px 0; }
  body.mode-player .lyric-line.cur { font-size: 32px; }
  body.mode-player .lyric-line.near { font-size: 24px; }
  #lyrics-empty { padding-top: 26vh; font-size: 16px; }

  /* ---- ログイン画面 */
  .login-view h1 { font-size: 34px; }
  .login-view p { font-size: 16px; }

  /* ---- HUD */
  :root { --hud-size: 7vw; }
  #hud-controls { padding: 12px var(--pc-gap); gap: 8px; }
}