:root {
  --color-bg: #faf7f2;
  --color-surface: #ffffff;
  --color-text: #33302b;
  --color-muted: #756f66;
  --color-border: #e7e1d6;
  --color-accent: #c1652f;
  --color-accent-dark: #a24f21;
  --color-danger: #b3392b;
  --color-success: #3f7a4d;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Hiragino Sans", "Yu Gothic", "Segoe UI", sans-serif;
  line-height: 1.7;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  display: flex;
  flex-wrap: wrap;  /* 狭い画面ではメニューを次の行へ（語の途中で折り返さない） */
  gap: 0.4rem 1rem;
  align-items: center;
  justify-content: space-between;
}

.site-header a.brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.site-header nav a {
  color: var(--color-muted);
  text-decoration: none;
  margin-left: 1rem;
  font-size: 0.9rem;
  white-space: nowrap;
}

.site-header nav .logout-form {
  display: inline;
  margin: 0;
  padding: 0;
}

.site-header nav .link-btn {
  background: none;
  border: none;
  padding: 0;
  margin-left: 1rem;
  font: inherit;
  font-size: 0.9rem;
  color: var(--color-muted);
  cursor: pointer;
}
.site-header nav .link-btn:hover {
  color: var(--color-text);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.card a.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.card h2, .card h3 {
  margin-top: 0;
}

h1 { font-size: 1.5rem; }
h1.page-title { margin-bottom: 1.5rem; }

.muted { color: var(--color-muted); font-size: 0.9rem; }

.btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.65rem 1.4rem;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--color-accent-dark); }
.btn.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn.btn-danger { background: var(--color-danger); }
.btn:disabled { background: var(--color-border); color: var(--color-muted); cursor: not-allowed; }

form p { margin: 0 0 1rem; }
label { display: block; font-size: 0.9rem; margin-bottom: 0.3rem; color: var(--color-muted); }
input[type=text], input[type=email], input[type=tel], input[type=number], input[type=password], textarea, select {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  color: var(--color-text);
}

/* 入力欄の見本（placeholder）は、入力済みの文字と見間違えないよう、はっきり薄くする */
input::placeholder, textarea::placeholder {
  color: #c4bdb2;
  opacity: 1;  /* Firefox は既定で半透明にするため揃える */
}

.errorlist { color: var(--color-danger); list-style: none; padding: 0; margin: 0.3rem 0; font-size: 0.85rem; }

.messages { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.messages li { padding: 0.7rem 1rem; border-radius: var(--radius); margin-bottom: 0.5rem; font-size: 0.9rem; }
.messages li.success { background: #e7f3ea; color: var(--color-success); }
.messages li.error { background: #fbeae7; color: var(--color-danger); }
.messages li.warning { background: #fdf3e0; color: #8a5a13; }

.slot-group h3 { margin-bottom: 0.6rem; }
.slot-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.slot-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: normal;
  background: #fff;
  cursor: pointer;
}
.slot-checkbox:has(input:checked) { border-color: var(--color-accent); background: #fdf3ec; }
.slot-checkbox .cap { display: block; font-size: 0.75rem; color: var(--color-muted); }

table.staff-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.staff-table th, table.staff-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 0.55rem 0.5rem;
  text-align: left;
}
table.staff-table th { color: var(--color-muted); font-weight: 600; }

.tabs { display: flex; gap: 0.5rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.tabs a {
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.85rem;
}
.tabs a.active { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

.reservation-code {
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-accent);
}

/* カレンダーのマスの空き人数（_slot_vacancy.html）。「空き」と人数を別の行にする */
.vac { display: block; line-height: 1.15; }
.vac-k { display: block; font-size: 0.85em; opacity: 0.8; }
.vac-n { display: block; white-space: nowrap; font-weight: bold; }
.vac-n.few { color: var(--color-accent-dark); }
.vac-note { font-size: 0.8rem; color: var(--color-muted); margin: 0 0 0.6rem; }