:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #17202a;
  --muted: #667085;
  --line: #d9e0e7;
  --primary: #1f4f7a;
  --primary-hover: #173d5f;
  --danger: #b42318;
  --danger-hover: #8f1d14;
  --success: #176b45;
  --warning: #8a5a00;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP",
    "Hiragino Kaku Gothic ProN", "Yu Gothic UI", sans-serif;
}

a { color: var(--primary); }
button, input, textarea, select { font: inherit; }

.site-header {
  min-height: 64px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px max(20px, calc((100vw - 1180px) / 2));
  gap: 16px;
}

.brand { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.brand-link { color: var(--text); text-decoration: none; font-weight: 700; font-size: 20px; }
.brand-subtitle { color: var(--muted); font-size: 13px; }
.header-actions { display: flex; align-items: center; gap: 8px; }

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 48px;
}

.site-footer {
  color: var(--muted);
  text-align: center;
  font-size: 12px;
  padding: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 18px;
}

.loading-card { text-align: center; color: var(--muted); }

.page-title {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.3;
}

.page-lead { margin: 0 0 20px; color: var(--muted); }

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.toolbar-group { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 9px 14px;
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
}

.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--line); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-soft); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }
.btn-small { padding: 6px 9px; min-height: 32px; font-size: 13px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group.full { grid-column: 1 / -1; }

label { font-weight: 600; font-size: 14px; }
.required::after { content: " *"; color: var(--danger); }

input[type="text"],
input[type="email"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  border: 1px solid #b9c2cc;
  border-radius: 7px;
  padding: 10px 11px;
  background: #fff;
  color: var(--text);
}

textarea { min-height: 100px; resize: vertical; }

input:focus, textarea:focus, select:focus {
  outline: 3px solid rgba(31, 79, 122, .14);
  border-color: var(--primary);
}

.help { color: var(--muted); font-size: 12px; }

.status {
  display: inline-flex;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 700;
  background: #eef2f6;
}
.status-open { color: var(--success); background: #e8f5ef; }
.status-closed { color: var(--warning); background: #fff4d8; }
.status-confirmed { color: #174ea6; background: #e8f0fe; }
.status-canceled { color: var(--danger); background: #fce8e6; }

.alert {
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: 7px;
  background: var(--surface);
  padding: 12px 14px;
  margin-bottom: 16px;
}
.alert-error { border-left-color: var(--danger); }
.alert-success { border-left-color: var(--success); }
.alert-info { border-left-color: var(--primary); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { padding: 10px 9px; border-bottom: 1px solid var(--line); vertical-align: top; text-align: left; }
th { background: var(--surface-soft); font-size: 13px; }
td { font-size: 14px; }

.event-list { display: grid; gap: 12px; }
.event-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fff;
}
.event-item-title { font-weight: 700; font-size: 16px; margin-bottom: 6px; }
.event-meta { color: var(--muted); font-size: 13px; display: flex; gap: 12px; flex-wrap: wrap; }

.candidate-editor { display: grid; gap: 10px; }
.candidate-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  border-radius: 8px;
  padding: 12px;
}

.answer-options { display: flex; gap: 12px; flex-wrap: wrap; }
.answer-option {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 7px 10px;
  background: #fff;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(100px, 1fr));
  gap: 8px;
}
.summary-cell {
  background: var(--surface-soft);
  border-radius: 7px;
  padding: 10px;
  text-align: center;
}
.summary-value { font-size: 20px; font-weight: 700; }
.summary-label { font-size: 12px; color: var(--muted); }

.muted { color: var(--muted); }
.pre-wrap { white-space: pre-wrap; }
.hidden { display: none !important; }

@media (max-width: 720px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .form-grid { grid-template-columns: 1fr; }
  .candidate-row { grid-template-columns: 1fr; }
  .app-shell { width: min(100% - 20px, 1180px); margin-top: 18px; }
  .card { padding: 16px; }
  .page-title { font-size: 23px; }
}