:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #1c2733;
  --ink-soft: #5b6b7b;
  --line: #dde3e9;
  --accent: #1f6feb;
  --accent-ink: #ffffff;
  --shadow: 0 1px 3px rgba(20,40,60,.08), 0 6px 20px rgba(20,40,60,.06);

  --cat-sports:   #2f7de1;
  --cat-festival: #e0632e;
  --cat-academic: #6c48c9;
  --cat-expo:     #1e9e7a;
  --cat-concert:  #d43f8d;
  --cat-mice:     #b58a12;
  --cat-other:    #7b8794;

  --impact-high: #d64545;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.55 "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, system-ui, sans-serif;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 20px;
  background: var(--panel); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 26px; }
.topbar h1 { margin: 0; font-size: 17px; }
.sub { margin: 2px 0 0; font-size: 12px; color: var(--ink-soft); }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.coverage { font-size: 12px; color: var(--ink-soft); }

/* ---------- buttons ---------- */
.btn {
  font: inherit; cursor: pointer; border-radius: 7px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  padding: 7px 12px; transition: background .12s, border-color .12s;
}
.btn:hover { background: #eef2f6; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #1a5fd0; }
.btn-ghost { padding: 6px 10px; }
.btn-seg { border-radius: 0; border-right-width: 0; }
.btn-seg:first-child { border-radius: 7px 0 0 7px; }
.btn-seg:last-child { border-radius: 0 7px 7px 0; border-right-width: 1px; }
.btn-seg.is-active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.loading { padding: 60px; text-align: center; color: var(--ink-soft); }

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px; padding: 16px; align-items: start;
}
.detail:not([hidden]) ~ * {} /* noop */
.layout:has(.detail:not([hidden])) {
  grid-template-columns: 320px 1fr 340px;
}

/* ---------- sidebar ---------- */
.sidebar {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: 12px; position: sticky; top: 72px;
  max-height: calc(100vh - 88px); overflow: auto;
}
.map-wrap { display: flex; justify-content: center; padding: 4px 0 12px; border-bottom: 1px solid var(--line); margin-bottom: 10px; }
.grid-map {
  position: relative;
  width: calc(12 * 23px);
  height: calc(14 * 23px);
}
.gm-cell {
  position: absolute; width: 21px; height: 21px;
  border: 1px solid var(--line); border-radius: 4px;
  background: #eef2f6; cursor: pointer;
  font-size: 9px; color: var(--ink-soft);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.gm-cell:hover { border-color: var(--accent); }
.gm-cell.has-events { background: #dbe8fb; color: var(--ink); }
.gm-cell.is-selected { background: var(--accent); border-color: var(--accent); color: #fff; }
.gm-cell.is-pending { opacity: .55; }

.pref-list { display: flex; flex-direction: column; gap: 10px; }
.region-block h4 {
  margin: 0 0 4px; font-size: 11px; color: var(--ink-soft);
  text-transform: none; letter-spacing: .04em;
}
.pref-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 8px; border-radius: 6px; cursor: pointer; font-size: 13px;
}
.pref-row:hover { background: #eef2f6; }
.pref-row.is-selected { background: var(--accent); color: #fff; }
.pref-row .cnt {
  font-size: 11px; background: #e4e9ef; color: var(--ink-soft);
  border-radius: 10px; padding: 1px 7px; min-width: 22px; text-align: center;
}
.pref-row.is-selected .cnt { background: rgba(255,255,255,.25); color: #fff; }
.pref-row.is-pending { color: var(--ink-soft); }

/* ---------- content ---------- */
.content {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: 14px 16px; min-width: 0;
}
.content-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.ch-left { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ch-left h2 { margin: 0; font-size: 16px; }
.ch-right { display: flex; align-items: center; gap: 12px; }
.pill {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  background: #e4e9ef; color: var(--ink-soft);
}
.pill.seeded { background: #fff3d9; color: #8a6400; }
.pill.done { background: #dcf3e6; color: #1c7a48; }
.yearnav { display: flex; align-items: center; gap: 6px; font-weight: 600; }
.yearnav #yearLabel { min-width: 68px; text-align: center; }

.filters {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 10px 0; margin: 8px 0 4px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.cat-filters { display: flex; gap: 10px; flex-wrap: wrap; }
.cat-chk { display: flex; align-items: center; gap: 5px; font-size: 12px; cursor: pointer; }
.cat-swatch { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.impact-filter { font-size: 12px; display: flex; align-items: center; gap: 6px; }
.impact-filter select { font: inherit; padding: 4px 6px; border-radius: 6px; border: 1px solid var(--line); }

/* ---------- calendar ---------- */
.cal-view {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px; margin-top: 12px;
}
.month {
  border: 1px solid var(--line); border-radius: 8px; padding: 8px;
}
.month h3 { margin: 0 0 6px; font-size: 13px; }
.month-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.dow { font-size: 10px; color: var(--ink-soft); text-align: center; padding: 2px 0; }
.dow.sun { color: #d64545; }
.dow.sat { color: #2f7de1; }
.day {
  min-height: 40px; border: 1px solid #eef1f4; border-radius: 4px; padding: 2px;
  font-size: 10px; cursor: pointer; background: #fcfdfe;
}
.day.empty { background: transparent; border-color: transparent; cursor: default; }
.day:not(.empty):hover { border-color: var(--accent); }
.day .dnum { color: var(--ink-soft); }
.day.sun .dnum { color: #d64545; }
.day.sat .dnum { color: #2f7de1; }
.day.has .dnum { font-weight: 700; color: var(--ink); }
.evbar {
  height: 4px; border-radius: 2px; margin-top: 2px;
}
.evmore { font-size: 8px; color: var(--ink-soft); margin-top: 1px; }
.day.hi { outline: 2px solid var(--impact-high); outline-offset: -2px; }

/* ---------- list view ---------- */
.list-view table { width: 100%; border-collapse: collapse; font-size: 12px; }
.list-view th, .list-view td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
.list-view th { color: var(--ink-soft); font-weight: 600; position: sticky; top: 0; background: var(--panel); }
.tag {
  display: inline-block; font-size: 10px; padding: 1px 6px; border-radius: 4px;
  color: #fff; white-space: nowrap;
}
.impact-badge { font-size: 10px; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); }
.impact-badge.high { background: #fdecec; border-color: #f3b7b7; color: #b52d2d; }
.impact-badge.mid { background: #fff6e5; border-color: #f0d49a; color: #8a6400; }
.impact-badge.low { background: #eef1f4; color: var(--ink-soft); }

/* ---------- detail panel ---------- */
.detail {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: 14px; position: sticky; top: 72px;
  max-height: calc(100vh - 88px); overflow: auto;
}
.detail h3 { margin: 0 24px 10px 0; font-size: 15px; }
.detail-close {
  position: absolute; top: 8px; right: 10px; border: none; background: none;
  font-size: 20px; cursor: pointer; color: var(--ink-soft); line-height: 1;
}
.ev-card { border: 1px solid var(--line); border-radius: 8px; padding: 10px; margin-bottom: 10px; }
.ev-card h4 { margin: 0 0 6px; font-size: 13px; }
.ev-meta { font-size: 12px; color: var(--ink-soft); }
.ev-meta div { margin: 2px 0; }
.ev-note { margin-top: 6px; font-size: 12px; background: #f6f8fa; border-radius: 6px; padding: 6px 8px; }
.ev-card a { color: var(--accent); word-break: break-all; }

/* ---------- modal ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(15,25,35,.45);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 20px;
}
.modal-box {
  background: var(--panel); border-radius: 12px; padding: 20px; max-width: 640px; width: 100%;
  position: relative; box-shadow: var(--shadow);
}
.modal-box h3 { margin: 0 24px 6px 0; }
.modal-desc { color: var(--ink-soft); font-size: 13px; margin: 0 0 10px; }
.modal-box textarea {
  width: 100%; font: 12px/1.5 ui-monospace, "SF Mono", Consolas, monospace;
  border: 1px solid var(--line); border-radius: 8px; padding: 10px; resize: vertical;
}
.modal-actions { margin-top: 10px; }
.modal-hint { font-size: 11px; color: var(--ink-soft); margin: 10px 0 0; }

/* ---------- アジェンダ（スマホの一覧表示） ---------- */
.agenda-month { margin-top: 16px; }
.agenda-month:first-child { margin-top: 2px; }
.agenda-month > h3 {
  margin: 0 0 8px; font-size: 12px; letter-spacing: .04em; color: var(--ink-soft);
  position: sticky; top: 0; background: var(--bg); padding: 4px 0; z-index: 1;
}
.agenda-card {
  display: flex; gap: 10px; align-items: flex-start;
  border: 1px solid var(--line); border-left: 4px solid var(--ac, var(--cat-other));
  border-radius: 8px; padding: 11px 12px; margin-bottom: 8px; cursor: pointer;
  background: var(--panel);
}
.agenda-card .ac-date {
  font-variant-numeric: tabular-nums; font-size: 12px; color: var(--ink-soft);
  white-space: nowrap; min-width: 58px;
}
.agenda-card .ac-body { flex: 1; min-width: 0; }
.agenda-card .ac-name { font-size: 13px; font-weight: 600; }
.agenda-card .ac-sub { font-size: 11px; color: var(--ink-soft); margin-top: 3px; }
.agenda-card .ac-tags { margin-top: 5px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

.mobile-only { display: none; }
.sheet-scrim { display: none; }

@media (max-width: 1100px) {
  .layout, .layout:has(.detail:not([hidden])) { grid-template-columns: 1fr; }
  .sidebar, .detail { position: static; max-height: none; }
}

/* ============ スマホ最適化（〜640px） ============ */
@media (max-width: 640px) {
  .mobile-only { display: inline-flex; }
  select, .btn, .modal-box textarea, .impact-filter select { font-size: 16px; }

  .topbar { position: static; padding: 10px 12px; gap: 8px; }
  .topbar h1 { font-size: 15px; }
  .sub, .coverage { display: none; }
  .brand-mark { font-size: 22px; }
  #btnFuture { padding: 9px 11px; font-size: 13px; }

  .layout, .layout:has(.detail:not([hidden])) { display: block; padding: 8px; gap: 0; }
  .sidebar, .content { border: none; box-shadow: none; background: transparent; padding: 4px; }
  .map-wrap { overflow-x: auto; justify-content: flex-start; }

  /* 一覧画面 ⇔ 県の詳細画面 を切り替え */
  .content { display: none; }
  body.m-detail .sidebar { display: none; }
  body.m-detail .content { display: block; }

  .pref-row { padding: 12px 10px; font-size: 15px; }
  .region-block h4 { font-size: 12px; margin-top: 6px; }

  .content-head { flex-direction: column; align-items: stretch; gap: 10px; }
  .ch-left { gap: 8px; }
  .ch-left h2 { font-size: 17px; flex: 1; }
  #btnBack { padding: 9px 12px; }
  .ch-right { justify-content: space-between; gap: 8px; }
  .yearnav { flex: 1; justify-content: center; }
  .yearnav .btn { padding: 9px 16px; }
  .yearnav #yearLabel { min-width: 76px; }
  .viewtoggle { flex: 1; display: flex; }
  .viewtoggle .btn-seg { flex: 1; padding: 10px 0; }
  #btnRefinePref { width: 100%; }

  .filters { gap: 12px; padding: 12px 2px; overflow-x: auto; }
  .cat-filters { flex-wrap: nowrap; }
  .cat-chk { flex: 0 0 auto; }
  #btnCsv { flex: 0 0 auto; }

  .cal-view { grid-template-columns: 1fr; gap: 10px; margin-top: 10px; }
  .month { padding: 10px; }
  .month h3 { font-size: 14px; }
  .day { min-height: 46px; font-size: 11px; }
  .day .dnum { font-size: 11px; }
  .evbar { height: 5px; }

  /* 詳細＝ボトムシート */
  .sheet-scrim { display: block; position: fixed; inset: 0; background: rgba(10,16,22,.42); z-index: 55; }
  .detail {
    display: block; position: fixed; left: 0; right: 0; bottom: 0; top: auto;
    border: none; border-radius: 16px 16px 0 0; max-height: 84vh; z-index: 60;
    box-shadow: 0 -8px 30px rgba(15,25,35,.3);
    padding: 16px 16px calc(16px + env(safe-area-inset-bottom));
    animation: sheet-up .18s ease-out;
  }
  .detail-close { font-size: 26px; top: 10px; right: 12px; padding: 4px; }

  .modal { padding: 0; align-items: flex-end; }
  .modal-box {
    border-radius: 16px 16px 0 0; max-height: 90vh; overflow: auto;
    padding: 18px 16px calc(18px + env(safe-area-inset-bottom));
  }
}

@keyframes sheet-up { from { transform: translateY(100%); } to { transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) { .detail { animation: none; } }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10151b; --panel: #1a222c; --ink: #e6edf3; --ink-soft: #9aa7b4;
    --line: #2b3642; --shadow: 0 1px 3px rgba(0,0,0,.4);
  }
  .btn:hover { background: #232d38; }
  .pref-row:hover, .gm-cell:hover { background: #232d38; }
  .gm-cell { background: #232d38; }
  .gm-cell.has-events { background: #24374f; }
  .day { background: #1e2732; border-color: #2b3642; }
  .day.empty { background: transparent; }
  .ev-note, .list-view th { background: #222c37; }
  .pill { background: #2b3642; }
  .cnt { background: #2b3642 !important; }
}