:root {
  --bg: #fffaf3; --fg: #3b2f2a; --muted: #7a6c64; --line: #e8dccd;
  --ok-bg: #e3f4e6; --ok-fg: #1d6b32;
  --ng-bg: #ececec; --ng-fg: #8a8a8a;
  --past-fg: #bdbdbd; --accent: #d9792b; --warn-bg: #fff1d6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d1916; --fg: #f1e8df; --muted: #b3a79d; --line: #3a322c;
    --ok-bg: #1f3a27; --ok-fg: #8fdca3; --ng-bg: #2b2b2b; --ng-fg: #9a9a9a;
    --past-fg: #5d5d5d; --accent: #f0a05d; --warn-bg: #3a2f1a;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; line-height: 1.6; }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.25rem; margin: 8px 0 12px; }
h1 small { display: block; font-size: .9rem; color: var(--muted); font-weight: normal; }
.notice { background: var(--warn-bg); border-radius: 8px; padding: 10px 12px; font-size: .85rem; margin: 0 0 16px; }
.month-nav { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.month-nav h2 { font-size: 1.1rem; margin: 0; text-align: center; flex: 1; }
.month-nav button { min-height: 44px; min-width: 76px; border: 1px solid var(--line); background: transparent;
  color: var(--fg); border-radius: 8px; font-size: .95rem; }
.month-nav button:disabled { opacity: .35; }
.status { padding: 10px 12px; border-radius: 8px; background: var(--warn-bg); margin-bottom: 8px; font-size: .9rem; }
.calendar { width: 100%; border-collapse: separate; border-spacing: 3px; table-layout: fixed; }
.calendar th { font-size: .8rem; font-weight: normal; color: var(--muted); padding: 4px 0; }
.calendar th.sun { color: #d04a4a; } .calendar th.sat { color: #4a7ad0; }
.calendar td { height: 56px; border-radius: 6px; text-align: center; vertical-align: middle; padding: 0; }
.calendar td.empty { background: transparent; }
.calendar td .d { display: block; font-size: .8rem; line-height: 1.1; }
.calendar td .m { display: block; font-size: 1.1rem; font-weight: bold; line-height: 1.2; }
.calendar td.ok { background: var(--ok-bg); color: var(--ok-fg); }
.calendar td.ng { background: var(--ng-bg); color: var(--ng-fg); }
.calendar td.past { background: transparent; color: var(--past-fg); }
.calendar td .n { font-size: .95rem; }
.calendar td.today { outline: 2px solid var(--accent); }
.calendar td.unknown { background: transparent; color: var(--muted); border: 1px dashed var(--line); }
.legend { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; padding: 0; margin: 12px 0 8px; font-size: .85rem; }
.chip { display: inline-block; width: 1.6em; text-align: center; border-radius: 4px; font-weight: bold; }
.chip.ok { background: var(--ok-bg); color: var(--ok-fg); }
.chip.ng { background: var(--ng-bg); color: var(--ng-fg); }
.small { font-size: .8rem; color: var(--muted); margin: 4px 0; }
a { color: var(--accent); }
.cta { display: block; margin: 20px 0 8px; padding: 14px 16px; min-height: 48px; text-align: center;
  background: var(--accent); color: #fff; font-weight: bold; text-decoration: none; border-radius: 10px; }
.cta:active { opacity: .85; }

/* 問い合わせフォーム */
:root { --btn-main: #2f7d46; --btn-main-fg: #fff; }
@media (prefers-color-scheme: dark) { :root { --btn-main: #3f9a5c; } }
.inquiry { margin-top: 24px; padding-top: 8px; border-top: 1px solid var(--line); }
.inquiry h2 { font-size: 1.1rem; margin: 12px 0 4px; }
.inquiry form { display: flex; flex-direction: column; gap: 14px; margin-top: 12px; }
.inquiry label { display: flex; flex-direction: column; gap: 4px; font-size: .9rem; font-weight: bold; }
.inquiry input, .inquiry textarea { font: inherit; font-size: 16px; /* iOSの自動ズーム防止 */ min-height: 44px; padding: 8px 10px;
  border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--fg); width: 100%; }
.inquiry textarea { resize: vertical; }
.req, .opt { align-self: flex-start; margin-top: 2px; font-size: .7rem; font-weight: normal; padding: 1px 6px; border-radius: 4px; }
.req { background: var(--accent); color: #fff; } .opt { background: var(--ng-bg); color: var(--muted); }
.stay-check { padding: 10px 12px; border-radius: 8px; font-size: .88rem; }
.stay-check.ok { background: var(--ok-bg); color: var(--ok-fg); }
.stay-check.blocked, .stay-check.unknown { background: var(--warn-bg); }
.form-errors { padding: 10px 12px; border-radius: 8px; background: var(--warn-bg); font-size: .88rem; }
.form-errors ul { margin: 0; padding-left: 1.2em; }
.actions { display: flex; flex-direction: column; gap: 10px; }
.btn { display: flex; align-items: center; justify-content: center; min-height: 48px; padding: 10px 16px; border-radius: 10px;
  border: 2px solid var(--accent); background: transparent; color: var(--accent); font: inherit; font-weight: bold;
  text-decoration: none; cursor: pointer; }
.btn.primary { background: var(--btn-main); border-color: var(--btn-main); color: var(--btn-main-fg); }
.btn:active { opacity: .85; }
.sms-note { margin-top: 16px; }
.calendar td.pick { cursor: pointer; }
.calendar td.selected { outline: 3px solid var(--btn-main); outline-offset: -1px; }
.sms-note p { margin: 0 0 .6em; }
.sms-note p:last-child { margin: 0; }
#inapp-note p, #sms-help p { margin: 0 0 .5em; }
#inapp-note p:last-child, #sms-help p:last-child { margin: 0; }