:root {
  --bg: #f7f6f3;
  --card: #ffffff;
  --ink: #1f2430;
  --muted: #6b7280;
  --accent: #6d4aff;
  --line: #e6e4df;
  --ok: #1f9d55;
  --link: #2563eb;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, "Hiragino Sans", "Noto Sans JP", sans-serif;
  color: var(--ink);
  background: var(--bg);
}
button, input, select { min-height: 44px; }
input, select { font-size: 16px; }
.topbar {
  padding: 18px 24px;
  background: linear-gradient(120deg, #2b2350, #4a3aa8);
  color: #fff;
}
.topbar h1 { margin: 0; font-size: 1.4rem; }
.tagline { margin: 4px 0 0; opacity: 0.8; font-size: 0.85rem; }

.topbar-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.auth { display: flex; align-items: center; gap: 10px; }
#auth-user { color: #fff; font-size: 0.85rem; opacity: 0.9; }
.auth-btn { background: rgba(255,255,255,0.16); color: #fff; border: 1px solid rgba(255,255,255,0.3); padding: 6px 14px; border-radius: 8px; font-size: 0.82rem; }
.auth-btn:hover { background: rgba(255,255,255,0.28); }
.modal-card.small { max-width: 380px; }
.auth-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.auth-tab { flex: 1; padding: 8px; border: 1px solid var(--line); background: #fff; border-radius: 8px; color: var(--muted); }
.auth-tab.active { border-color: var(--accent); color: var(--accent); font-weight: 600; }
.auth-error { color: #c0392b; font-size: 0.8rem; min-height: 1em; margin: 8px 0 0; }
.unread-badge { font-size: 0.72rem; color: #c0392b; font-weight: 600; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #c0392b; margin-right: 4px; }
.unread strong { font-weight: 700; }
.read-mark { color: var(--muted); font-size: 0.72rem; }
.read-btn { color: var(--accent) !important; }
.rec-list { list-style: none; padding: 0; margin: 0; }
.rec-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 0.85rem; }

.tabs { margin-top: 12px; display: flex; gap: 6px; }
.tab { background: rgba(255,255,255,0.12); color: #fff; border: none; padding: 10px 18px; border-radius: 8px 8px 0 0; font-size: 0.95rem; opacity: 0.7; }
.tab.active { background: var(--bg); color: var(--ink); opacity: 1; font-weight: 600; }

.layout { display: grid; grid-template-columns: 280px 1fr; gap: 20px; padding: 20px; align-items: start; }
.filter-toggle, .filter-head, .filter-overlay { display: none; }

/* 配布パネル */
.distribute { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 20px; align-items: start; }
.dist-col { display: grid; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.card h2 { margin: 0 0 12px; font-size: 1.05rem; }
.card .row { display: flex; gap: 8px; margin-bottom: 8px; }
.card input, .card select { padding: 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; flex: 1; background: #fff; min-width: 0; }
.card button { padding: 10px 14px; border: 1px solid var(--accent); background: #fff; color: var(--accent); border-radius: 8px; }
.card button.primary, .card button:hover { background: var(--accent); color: #fff; }
.primary { width: 100%; margin-top: 6px; }

.members { list-style: none; padding: 0; margin: 0 0 12px; }
.members li { display: flex; align-items: center; gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 0.88rem; }
.m-name { font-weight: 600; }
.m-inst { color: var(--muted); font-size: 0.78rem; }
.role { font-size: 0.68rem; padding: 2px 7px; border-radius: 999px; white-space: nowrap; }
.role-conductor { background: #fde8e8; color: #c0392b; }
.role-part_leader { background: #fdf3e0; color: #b8860b; }
.role-member { background: #eef0f3; color: var(--muted); }
.link-btn { margin-left: auto; border: none !important; background: none !important; color: var(--muted) !important; font-size: 0.75rem; cursor: pointer; }
.member-form { display: grid; grid-template-columns: 1fr 1fr auto auto; gap: 6px; }
.member-hint { color: var(--muted); font-size: 0.78rem; margin: 8px 0 0; }

.recipients { display: flex; flex-wrap: wrap; gap: 8px; max-height: 140px; overflow: auto; }
.rec { display: flex; align-items: center; gap: 6px; font-size: 0.9rem; border: 1px solid var(--line); padding: 8px 10px; border-radius: 8px; min-height: 44px; }
.share-hint { display: block; margin-top: 6px; font-size: 0.78rem; color: var(--muted); }
#d-work { width: 100%; }

.dist-log { list-style: none; padding: 0; margin: 0; }
.dist-log li { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 0.85rem; }
.dist-meta { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 0.76rem; margin-top: 3px; flex-wrap: wrap; }
.dist-msg { margin-top: 4px; color: var(--ink); font-size: 0.82rem; background: #f4f3fb; padding: 5px 8px; border-radius: 6px; }
.when { margin-left: auto; }

@media (max-width: 720px) {
  .distribute { grid-template-columns: 1fr; }
  .member-form { grid-template-columns: 1fr 1fr; }
}
.sidebar { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; position: sticky; top: 20px; }
.field { margin-bottom: 12px; display: flex; flex-direction: column; gap: 4px; }
.field.checkbox { flex-direction: row; align-items: center; gap: 8px; }
.field label { font-size: 0.78rem; color: var(--muted); }
.field input[type="search"], .field input, .field select {
  padding: 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 16px; background: #fff;
}
button { cursor: pointer; font: inherit; }
.ghost { width: 100%; padding: 10px; background: transparent; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); }

.sync-box { margin-top: 18px; border-top: 1px dashed var(--line); padding-top: 14px; }
.sync-box h3 { margin: 0 0 4px; font-size: 0.95rem; }
.hint { margin: 0 0 8px; font-size: 0.75rem; color: var(--muted); }
.sync-btn { display: block; width: 100%; margin-bottom: 6px; padding: 10px; border: 1px solid var(--accent); color: var(--accent); background: #fff; border-radius: 8px; }
.sync-btn:hover { background: var(--accent); color: #fff; }
.sync-status { font-size: 0.75rem; color: var(--muted); min-height: 1em; margin: 6px 0 0; }

.results-head { margin-bottom: 10px; color: var(--muted); font-size: 0.85rem; }
.works { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.work-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px;
  display: flex; justify-content: space-between; gap: 12px; cursor: pointer; transition: box-shadow 0.15s, transform 0.1s;
}
.work-card:hover { box-shadow: 0 4px 14px rgba(0,0,0,0.07); transform: translateY(-1px); }
.work-card h3 { margin: 0 0 2px; font-size: 1.02rem; }
.original-title { margin: 0 0 3px; color: var(--muted); font-size: 0.76rem; line-height: 1.25; }
.composer { margin: 0; color: var(--ink); font-size: 0.85rem; }
.meta { margin: 4px 0; color: var(--muted); font-size: 0.8rem; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.tag { background: #efeefb; color: #4a3aa8; font-size: 0.7rem; padding: 2px 8px; border-radius: 999px; }
.work-side { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; white-space: nowrap; }
.src { font-size: 0.72rem; color: var(--muted); }
.badge { font-size: 0.7rem; padding: 2px 8px; border-radius: 999px; font-weight: 600; }
.badge.ok { background: #e3f5ea; color: var(--ok); }
.badge.link { background: #eef2ff; color: var(--link); }
.local-status {
  font-size: 0.7rem; padding: 2px 8px; border-radius: 999px;
  background: #f0eff5; color: var(--muted); font-weight: 600;
}
.local-status.saved { background: #e3f5ea; color: var(--ok); }
.local-status.practicing { background: #fdf3e0; color: #9a6700; }
.local-status.opened { background: #eef2ff; color: var(--link); }
.quick-actions { display: flex; flex-direction: column; gap: 5px; align-items: flex-end; }
.quick-actions button,
.sheet-tools button {
  min-height: 36px; border: 1px solid var(--line); background: #fff; color: var(--muted);
  border-radius: 8px; padding: 6px 9px; font-size: 0.76rem;
}
.quick-actions button.active,
.sheet-tools button.active { border-color: var(--accent); color: var(--accent); background: #f0efff; font-weight: 700; }

.empty { color: var(--muted); text-align: center; padding: 40px; }
.hidden { display: none !important; }

.modal { position: fixed; inset: 0; background: rgba(20,18,40,0.45); display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal-card { background: #fff; border-radius: 14px; padding: 24px; max-width: 560px; width: 100%; max-height: 85vh; overflow: auto; position: relative; }
.close { position: absolute; top: 12px; right: 14px; border: none; background: transparent; font-size: 1.5rem; color: var(--muted); }
.modal-card h2 { margin: 0 0 4px; }
.license-text { font-size: 0.8rem; color: var(--muted); }
.sheet-tools {
  border: 1px solid var(--line); background: #fafafa; border-radius: 10px;
  padding: 12px; margin: 14px 0;
}
.tool-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.memo-label { display: block; color: var(--muted); font-size: 0.78rem; margin-bottom: 4px; }
.memo {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 10px;
  font: inherit; resize: vertical; background: #fff;
}
.memo-save { margin-top: 8px; width: 100%; }
.upload-label { display: block; color: var(--muted); font-size: 0.78rem; margin: 12px 0 4px; }
.pdf-upload {
  width: 100%; border: 1px dashed var(--line); border-radius: 8px; padding: 10px;
  background: #fff;
}
.upload-status { margin: 6px 0 0; color: var(--muted); font-size: 0.76rem; }
.tool-hint { margin: 8px 0 0; color: var(--muted); font-size: 0.74rem; line-height: 1.5; }
.files { list-style: none; padding: 0; }
.files li { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.file-main { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-width: 0; }
.file-label { font-weight: 600; font-size: 0.9rem; }
.file-kind { color: var(--muted); font-size: 0.72rem; }
.file-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.viewer-open {
  border: 1px solid var(--accent); background: #fff; color: var(--accent);
  border-radius: 8px; padding: 8px 10px;
}
.files a { color: var(--link); text-decoration: none; }
.files a:hover { text-decoration: underline; }

.viewer {
  position: fixed; inset: 0; z-index: 80; background: #111827; color: #fff;
  display: grid; grid-template-rows: auto 1fr;
}
.viewer.hidden { display: none !important; }
.viewer-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 14px; background: #1f2937; border-bottom: 1px solid rgba(255,255,255,0.12);
}
#viewer-subtitle { display: block; color: #cbd5e1; font-size: 0.76rem; margin-top: 2px; }
#viewer-close {
  border: 1px solid rgba(255,255,255,0.25); background: transparent; color: #fff;
  border-radius: 8px; padding: 8px 12px;
}
.viewer-body { min-height: 0; }
.viewer-body iframe { width: 100%; height: 100%; border: 0; background: #fff; }
.viewer-fallback {
  max-width: 520px; margin: 12vh auto 0; padding: 20px; color: #e5e7eb;
  line-height: 1.7;
}
.viewer-fallback h2 { margin: 0 0 8px; color: #fff; }
.viewer-fallback a {
  display: inline-block; margin-top: 10px; color: #fff; border: 1px solid rgba(255,255,255,0.3);
  border-radius: 8px; padding: 10px 14px; text-decoration: none;
}

@media (max-width: 720px) {
  body { padding-bottom: 74px; }
  .topbar { padding: 14px 16px 10px; }
  .topbar-row { flex-direction: column; gap: 10px; }
  .topbar h1 { font-size: 1.08rem; line-height: 1.25; }
  .tagline { font-size: 0.76rem; }
  .auth { width: 100%; justify-content: space-between; }
  .auth-btn { padding: 8px 12px; }
  .tabs {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
    margin: 0; padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    background: rgba(255,255,255,0.96); border-top: 1px solid var(--line);
    box-shadow: 0 -8px 24px rgba(20,18,40,0.08);
  }
  .tab { flex: 1; border-radius: 10px; color: var(--muted); background: #f0eff5; opacity: 1; }
  .tab.active { background: var(--accent); color: #fff; }

  .layout { display: block; padding: 12px; }
  .filter-toggle {
    display: block; position: sticky; top: 0; z-index: 10;
    width: 100%; margin: 0 0 10px; padding: 11px 14px;
    border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
    box-shadow: 0 3px 12px rgba(20,18,40,0.06);
  }
  .filter-overlay {
    display: block; position: fixed; inset: 0; z-index: 40; background: rgba(20,18,40,0.38);
  }
  .sidebar {
    position: fixed; z-index: 41; inset: 0 auto 0 0; top: 0;
    width: min(88vw, 360px); border-radius: 0; border-width: 0 1px 0 0;
    padding: 16px; overflow: auto; transform: translateX(-104%);
    transition: transform 0.18s ease; box-shadow: 18px 0 36px rgba(20,18,40,0.16);
  }
  .filters-open .sidebar { transform: translateX(0); }
  .filter-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
  .close-filter {
    border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 6px 10px; color: var(--muted);
  }
  .results-head { margin: 4px 0 8px; }
  .work-card { display: block; padding: 14px; border-radius: 10px; }
  .work-card h3 { font-size: 1rem; line-height: 1.35; }
  .work-side { align-items: stretch; margin-top: 10px; white-space: normal; }
  .quick-actions { flex-direction: row; align-items: center; justify-content: stretch; }
  .quick-actions button { flex: 1; min-width: 0; }
  .src { order: -1; }
  .modal { align-items: flex-end; padding: 0; }
  .modal-card {
    max-width: none; max-height: 88vh; border-radius: 16px 16px 0 0;
    padding: 22px 18px calc(22px + env(safe-area-inset-bottom));
  }
  .files li { align-items: stretch; flex-direction: column; }
  .file-actions { display: grid; grid-template-columns: 1fr; justify-content: stretch; }
  .viewer-open, .files a { width: 100%; text-align: center; padding: 10px; }
  .viewer-bar { padding: 8px 10px; }
  .viewer-fallback { margin: 8vh 12px 0; padding: 16px; }
  .tool-row { display: grid; grid-template-columns: 1fr; }
  .sheet-tools button { width: 100%; }
  .distribute { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 12px; }
  .card { border-radius: 10px; padding: 14px; }
  .card .row { flex-direction: column; }
  .member-form { grid-template-columns: 1fr; }
  .members li { flex-wrap: wrap; }
  .link-btn { min-height: 36px; padding: 4px 0; }
  .recipients { display: grid; grid-template-columns: 1fr; max-height: 220px; }
  .when { margin-left: 0; }
  #d-work { min-height: 180px; }
}

@media (min-width: 721px) and (max-width: 1024px) {
  .layout { grid-template-columns: 260px 1fr; gap: 14px; padding: 16px; }
  .distribute { gap: 14px; padding: 16px; }
  .sidebar { top: 16px; padding: 14px; }
  .work-card { padding: 14px; }
  .member-form { grid-template-columns: 1fr 1fr; }
}