:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e0e3e8;
  --text: #26282b;
  --muted: #6b7280;
  --primary: #2f6fed;
  --primary-dark: #204fb0;
  --danger: #d9453d;
  --success: #1a9e5c;
  --warn: #b8860b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

header.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

header.topbar .title {
  font-weight: 700;
  font-size: 1.1rem;
}

nav.mainnav a {
  margin-right: 16px;
  color: var(--text);
  font-weight: 500;
}
nav.mainnav a:hover { color: var(--primary); }

.container {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

h1 { font-size: 1.4rem; margin: 0 0 16px; }
h2 { font-size: 1.15rem; margin: 24px 0 12px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th { color: var(--muted); font-weight: 600; background: #fafbfc; }

tr:hover td { background: #f8fafd; }

.btn {
  display: inline-block;
  padding: 8px 16px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.92rem;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn.secondary:hover { background: #f2f3f5; }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #a83530; }
.btn.small { padding: 4px 10px; font-size: 0.82rem; }

form.inline { display: inline; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; margin-bottom: 4px; font-weight: 600; font-size: 0.88rem; }
.form-row input[type=text], .form-row input[type=password], .form-row input[type=date],
.form-row input[type=email], .form-row input[type=tel], .form-row select, .form-row textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
.form-row textarea { min-height: 80px; resize: vertical; }
.form-actions { margin-top: 18px; display: flex; gap: 10px; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}
.badge.status-紹介済み { background: #eef2ff; color: #4338ca; }
.badge.status-面談設定 { background: #fff7e6; color: var(--warn); }
.badge.status-面談済み { background: #e6f4ff; color: #0b6bc2; }
.badge.status-入会 { background: #e7f8ee; color: var(--success); }

.badge.paid { background: #e7f8ee; color: var(--success); }
.badge.unpaid { background: #fdeceb; color: var(--danger); }

.error-box {
  background: #fdeceb;
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.muted { color: var(--muted); font-size: 0.88rem; }

.stat-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.stat-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 22px;
  min-width: 150px;
}
.stat-box .num { font-size: 1.6rem; font-weight: 700; }
.stat-box .label { color: var(--muted); font-size: 0.85rem; }

.filter-bar { display: flex; gap: 10px; margin-bottom: 16px; align-items: center; flex-wrap: wrap; }
.filter-bar select { padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border); }

.login-wrap {
  max-width: 380px;
  margin: 80px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
}
.login-wrap h1 { text-align: center; }

.month-nav { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.month-nav select { padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border); }

/* 面談日ポップアップ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-box {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  max-width: 520px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-box h2 { margin-top: 0; }
.modal-box .close-btn { margin-top: 16px; }