:root {
  color-scheme: light dark;
  --bg: #f2f2f5;
  --surface: #ffffff;
  --text: #1a1a1c;
  --muted: #5c5c66;
  --line: #cfd0d8;
  --primary: #0031d8;
  --primary-text: #ffffff;
  --primary-soft: #e8eeff;
  --done: #197a4b;
  --done-soft: #e6f5ec;
  --warn: #b25e00;
  --danger: #c4002b;
  --focus: #ffb800;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101115;
    --surface: #1c1e24;
    --text: #ececf1;
    --muted: #a6a7b3;
    --line: #3b3d47;
    --primary: #7d9bff;
    --primary-text: #0b1233;
    --primary-soft: #232c4d;
    --done: #5fd39a;
    --done-soft: #17301f;
    --warn: #ffb35c;
    --danger: #ff7a92;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.topbar h1 { margin: 0; font-size: 18px; font-weight: 700; white-space: nowrap; }
.sites { display: flex; gap: 8px; }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px max(16px, env(safe-area-inset-left)) calc(40px + env(safe-area-inset-bottom));
  display: grid;
  gap: 16px;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.panel h2 { margin: 0 0 12px; font-size: 17px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  touch-action: manipulation;
}
.btn:hover { border-color: var(--primary); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-quiet { border-color: transparent; background: var(--primary-soft); color: var(--primary); }
.btn-danger { color: var(--danger); margin-left: auto; }
.btn-site { flex-direction: column; gap: 0; line-height: 1.15; padding: 4px 12px; background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-site .sub { font-size: 11px; font-weight: 500; opacity: .85; }
.btn-copy { min-height: 40px; padding: 0 10px; font-size: 13px; }
.btn-copy.copied { background: var(--done-soft); color: var(--done); border-color: var(--done); }
.btn-icon { min-width: 40px; min-height: 40px; padding: 0; font-size: 17px; }
.btn-del:hover { color: var(--danger); border-color: var(--danger); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 120px;
  padding: 16px;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
  cursor: pointer;
}
.drop:hover, .drop.over { border-color: var(--primary); background: var(--primary-soft); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }
.drop-main { font-size: 17px; font-weight: 700; color: var(--primary); }
.drop-sub { font-size: 13px; color: var(--muted); }
.drop-sub span { display: inline-block; }

.paste { margin-top: 12px; }
.paste summary { cursor: pointer; color: var(--primary); font-weight: 600; padding: 6px 0; }
.paste textarea {
  display: block;
  width: 100%;
  margin: 8px 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.status[hidden] { display: none; }
.status { margin-top: 12px; display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.status progress { width: 100%; height: 8px; accent-color: var(--primary); }
.previews { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.previews:empty { display: none; }
.previews a { display: block; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.previews img { display: block; height: 96px; width: auto; max-width: 160px; object-fit: cover; }

.list-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.count { font-size: 14px; color: var(--muted); font-weight: 600; }
.tools { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
#h-out + .tools { margin-bottom: 0; }
.empty { color: var(--muted); text-align: center; padding: 24px 0; margin: 0; }

.songs { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.song {
  display: grid;
  grid-template-columns: 32px minmax(0, 1.3fr) minmax(0, 1fr) 132px 150px 150px;
  grid-template-areas:
    "no title artist org jasrac nextone"
    "no more more more more actions";
  gap: 8px 10px;
  align-items: end;
  padding: 12px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}
.song.is-done { border-left-color: var(--done); background: linear-gradient(90deg, var(--done-soft), transparent 40%); }
.song.is-warn { border-left-color: var(--warn); }
.song-no { grid-area: no; align-self: start; padding-top: 28px; font-weight: 700; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }
.f-title { grid-area: title; }
.f-artist { grid-area: artist; }
.f-org { grid-area: org; }
.f-jasrac { grid-area: jasrac; }
.f-nextone { grid-area: nextone; }
.more { grid-area: more; align-self: center; }
.song-actions { grid-area: actions; display: flex; justify-content: flex-end; gap: 6px; }

.field { display: grid; gap: 2px; min-width: 0; }
.field label { font-size: 12px; color: var(--muted); font-weight: 600; }
.field input, .field select {
  width: 100%;
  min-height: 40px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 16px;
}
.field input:focus, .field select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px var(--primary-soft); }
.with-btn { display: flex; gap: 6px; }
.with-btn input { flex: 1; min-width: 0; }
.more summary { cursor: pointer; font-size: 13px; color: var(--muted); padding: 6px 0; }
.more-grid { display: grid; grid-template-columns: 1fr 1fr 2fr; gap: 8px; margin-top: 4px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translate(-50%, 20px);
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--text);
  color: var(--surface);
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 900px) {
  .song {
    grid-template-columns: 28px minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "no title title"
      "no artist artist"
      "no org org"
      "no jasrac nextone"
      "no more more"
      "no actions actions";
  }
  .song-no { padding-top: 26px; }
  .more-grid { grid-template-columns: 1fr 1fr; }
  .more-grid .field-wide { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .topbar h1 { font-size: 15px; white-space: normal; }
  .btn-site { padding: 4px 10px; font-size: 14px; }
  .panel { padding: 12px; }
  .song { padding: 10px; gap: 8px; }
  .song { grid-template-columns: 22px minmax(0, 1fr) minmax(0, 1fr); }
  .btn-danger { margin-left: 0; }
  .tools .btn { flex: 1 1 calc(50% - 8px); }
}