:root {
    --fg: #23201c;
    --muted: #7a736a;
    --line: #e2ddd5;
    --bg: #fdfcfa;
    --accent: #1f6f6b;
    --closed: #b9b3aa;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
    line-height: 1.6;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px 64px;
}

h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 32px 0 8px; }
.muted { color: var(--muted); font-size: .9rem; }

.badge {
    font-size: .7rem;
    background: var(--accent);
    color: #fff;
    padding: 2px 8px;
    border-radius: 999px;
    vertical-align: middle;
}

.tenant-list { list-style: none; padding: 0; }
.tenant-list li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.tenant-list code { color: var(--muted); font-size: .8rem; margin-left: 8px; }

.month-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 24px 0 12px;
}

.month-label { font-size: 1.2rem; }

.btn {
    display: inline-block;
    padding: 6px 14px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: var(--fg);
    text-decoration: none;
    font-size: .9rem;
}

.btn:hover { border-color: var(--accent); color: var(--accent); }

table.calendar {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    font-size: .9rem;
}

table.calendar th,
table.calendar td {
    border: 1px solid var(--line);
    padding: 6px 8px;
    vertical-align: top;
}

table.calendar thead th {
    background: #f4f1ec;
    font-weight: 600;
    text-align: left;
    white-space: nowrap;
}

.col-date { width: 84px; white-space: nowrap; }
.col-other { width: 160px; }
.dow { color: var(--muted); font-size: .8rem; }
tr.weekend .col-date { background: #faf6ef; }

.slot-empty { color: var(--closed); }

.slot { border-left: 3px solid var(--line); padding-left: 8px; }
.slot + .slot { margin-top: 6px; }
.slot.is-open { border-left-color: var(--accent); }
.slot.is-unavailable { border-left-color: var(--closed); color: var(--muted); }
.slot.is-event { border-left-color: #c07a2c; }

.slot-course { font-weight: 600; }
.slot-state { font-size: .85rem; color: var(--muted); }
.seats strong { color: var(--accent); }
.slot.is-unavailable .seats strong { color: var(--closed); }

.tag {
    display: inline-block;
    background: #efece6;
    color: var(--muted);
    border-radius: 4px;
    padding: 0 6px;
    font-size: .8rem;
}

.back { margin-top: 24px; font-size: .9rem; }

/* ------------------------------------------------------------------
   予約案内ページ・予約受付ページ
   ------------------------------------------------------------------ */

.container.narrow { max-width: 640px; }

.page-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
}

.page-nav { display: flex; gap: 8px; }
.sub-link { font-size: .8rem; margin-left: 8px; }
.lead { margin: 20px 0 8px; }
.section-title { margin-top: 28px; }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-primary:hover { background: #185855; border-color: #185855; color: #fff; }
.btn-lg { padding: 10px 24px; font-size: 1rem; }

.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px 18px;
    margin: 12px 0 20px;
}

/* 予約の流れ */
.steps { margin: 0; padding-left: 1.2em; }
.steps li { margin-bottom: 12px; }
.steps p { margin: 2px 0 0; color: var(--muted); font-size: .9rem; }

table.info-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    font-size: .95rem;
    margin-bottom: 8px;
}

table.info-table th,
table.info-table td {
    border: 1px solid var(--line);
    padding: 8px 10px;
    text-align: left;
}

table.info-table thead th { background: #f4f1ec; white-space: nowrap; }

.tag-open {
    display: inline-block;
    background: #e6f1f0;
    color: var(--accent);
    border-radius: 4px;
    padding: 0 6px;
    font-size: .85rem;
}

.rules, .faq { margin: 0; }
.rules dt, .faq dt { font-weight: 600; margin-top: 14px; }
.rules dd, .faq dd { margin: 2px 0 0; color: var(--muted); }

/* 直近の空き枠 */
.slot-list { list-style: none; padding: 0; margin: 0; }

.slot-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
}

.slot-list-date { font-weight: 600; }
.slot-list-time { color: var(--muted); margin-left: 8px; font-size: .9rem; }
.slot-list-course { display: block; font-size: .9rem; }
.slot-list-side { display: flex; align-items: center; gap: 12px; }

/* カレンダーの「予約する」 */
.slot-book {
    display: inline-block;
    margin-top: 4px;
    font-size: .8rem;
    color: var(--accent);
    text-decoration: none;
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 0 6px;
}

.slot-book:hover { background: var(--accent); color: #fff; }

/* 申し込む枠の内容 */
.session-card { border-left: 4px solid var(--accent); }
.session-when { display: flex; align-items: baseline; gap: 10px; }
.session-date { font-size: 1.2rem; font-weight: 600; }
.session-time { color: var(--muted); }
.session-course { font-weight: 600; margin-top: 2px; }
.session-title { color: #c07a2c; }
.session-note { margin: 10px 0 0; font-size: .9rem; color: var(--muted); }

.session-meta {
    display: grid;
    grid-template-columns: 6.5em 1fr;
    gap: 4px 12px;
    margin: 12px 0 0;
    font-size: .9rem;
}

.session-meta dt { color: var(--muted); }
.session-meta dd { margin: 0; }
.session-meta strong { color: var(--accent); font-size: 1.05rem; }

/* 通知 */
.alert {
    border-radius: 6px;
    padding: 10px 14px;
    margin: 12px 0;
    font-size: .95rem;
}

.alert-error { background: #fbeeec; border: 1px solid #e0b4ae; color: #8e3b2f; }
.alert-info { background: #f3f0ea; border: 1px solid var(--line); color: var(--fg); }
.alert-done { background: #e6f1f0; border: 1px solid #9dc7c4; color: #14524f; font-weight: 600; }

/* フォーム */
.field { margin-bottom: 18px; }
.field > label { display: block; font-weight: 600; margin-bottom: 4px; }

.required {
    font-size: .7rem;
    background: #8e3b2f;
    color: #fff;
    border-radius: 3px;
    padding: 1px 5px;
    vertical-align: middle;
    font-weight: 400;
}

.field input[type="text"],
.field input[type="email"],
.field textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    background: #fff;
    color: var(--fg);
}

.field input:focus, .field textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    border-color: var(--accent);
}

.field-hint { margin: 4px 0 0; font-size: .8rem; color: var(--muted); }
.field-error { margin: 4px 0 0; font-size: .85rem; color: #8e3b2f; }

/* 席の選択 */
.seats-choice { display: flex; flex-wrap: wrap; gap: 8px; }

.seat {
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 8px 12px;
    background: #fff;
    cursor: pointer;
    font-weight: 400;
}

.seat:has(input:checked) { border-color: var(--accent); background: #e6f1f0; }
.seat.is-taken { color: var(--closed); background: #f6f4f1; cursor: not-allowed; }
.seat-label { font-weight: 600; }
.seat-state { font-size: .75rem; color: var(--muted); }

.form-actions { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.form-foot { margin: 12px 0 0; }

button.btn { font-family: inherit; cursor: pointer; }

@media (max-width: 600px) {
    table.calendar { font-size: .8rem; }
    .col-other { width: auto; }
    .slot-list li { align-items: flex-start; }
    .session-meta { grid-template-columns: 5.5em 1fr; }
}

/* ================= ログイン ================= */
.login-page { max-width: 420px; }
.login-form { display: flex; flex-direction: column; gap: 6px; }
.login-form label { font-size: .9rem; color: var(--muted); margin-top: 8px; }
.login-form input {
    font: inherit;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
}
.login-form button { margin-top: 16px; }

.form-error {
    border-left: 3px solid #b4432f;
    background: #fbf0ee;
    padding: 8px 12px;
    margin: 12px 0;
}
.form-ok {
    border-left: 3px solid var(--accent);
    background: #eaf3f2;
    padding: 8px 12px;
    margin: 12px 0;
}

/* ================= 管理画面（開催枠） ================= */
.inline-form { display: inline-block; margin: 0; }
.page-nav { display: flex; gap: 8px; align-items: center; }

.grid-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px 16px;
    align-items: end;
}
.grid-form label { display: flex; flex-direction: column; gap: 4px; font-size: .85rem; color: var(--muted); }
.grid-form .wide { grid-column: 1 / -1; }
.grid-form input, .grid-form select {
    font: inherit;
    padding: 6px 8px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: var(--fg);
}

table.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 24px;
    font-size: .9rem;
}
table.admin-table th, table.admin-table td {
    border: 1px solid var(--line);
    padding: 6px 8px;
    vertical-align: top;
    text-align: left;
}
table.admin-table th { background: #f6f4f1; font-weight: 600; font-size: .8rem; }
table.admin-table input, table.admin-table select {
    font: inherit;
    padding: 4px 6px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: #fff;
    color: var(--fg);
    max-width: 100%;
}
table.admin-table input.num { width: 5em; }
.custom-times { display: inline-flex; gap: 4px; margin-top: 4px; }
.nowrap { white-space: nowrap; }

.btn-danger { border-color: #c8a49c; color: #8f3826; }
.btn-danger:hover { background: #fbf0ee; }

/* 管理画面は列が多いので、狭い画面では横スクロールに逃がす（縦に潰すと対応が取れなくなる） */
@media (max-width: 800px) {
    .admin table.admin-table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* 部屋（フロア）の見出し。1つのセルに 1F と 2F の枠が縦に並ぶことがある */
.slot-room {
    font-size: .7rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: .04em;
}
.slot + .slot { margin-top: 6px; border-top: 1px dashed var(--line); padding-top: 6px; }

/* 週テンプレートの格子。曜日の境目が分かるように区切る */
table.template-table td { vertical-align: middle; }
table.template-table tr.day-start > td { border-top: 2px solid var(--muted); }
table.template-table select { min-width: 8em; }
table.template-table input.num { width: 4.5em; margin-left: 4px; }

/* キャンセル待ちの案内。予約ボタンと間違えないよう、押せない見た目にする */
.slot-waitlist {
    margin-top: 4px;
    font-size: .75rem;
    color: #8f6b26;
    background: #fdf3dd;
    border-radius: 4px;
    padding: 2px 4px;
    text-align: center;
}

/* チェックボックスつきのラベル。縦積みの入力欄の中で行を作らない */
label.check {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 4px;
    font-size: .8rem;
    color: var(--muted);
    margin-top: 4px;
}
label.check input { width: auto; }

/* キャンセル済みの行。消さずに残すので、生きている予約と見分けが付くようにする */
tr.is-cancelled { color: var(--closed); }
tr.is-cancelled td { background: #f6f4f1; }
tr.is-cancelled a { color: inherit; }