:root {
  --border: rgba(0, 0, 0, 0.12);
  --border-strong: rgba(0, 0, 0, 0.28);
  --fg: #1a1a1a;
  --fg-muted: rgba(0, 0, 0, 0.5);
  --bg: #ffffff;
  --accent: #1a1a1a;
  --accent-fg: #ffffff;
  --danger: #c0392b;
  --chip-bg: rgba(0, 0, 0, 0.05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--fg);
  background: var(--bg);
  font-size: 15px;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 30;
}
.site-title { font-weight: 700; text-decoration: none; color: var(--fg); margin-right: auto; }
.site-user { font-size: 13px; color: var(--fg-muted); }
.site-logout { font-size: 13px; color: var(--fg-muted); text-decoration: none; }

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 96px;
  position: relative;
}

h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 24px 0 8px; }

a { color: inherit; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-fixed { position: fixed; top: 62px; right: 16px; z-index: 50; }
.btn[disabled] { opacity: 0.5; cursor: default; }

.menu-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.menu-list a {
  display: block;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
}

.card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
}
.card-row { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; padding: 2px 0; }
.card-row .label { color: var(--fg-muted); }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 13px; color: var(--fg-muted); }
input[type=text], input[type=number], input[type=password], select, textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-size: 15px;
  background: var(--bg);
  color: var(--fg);
  width: 100%;
}

.date-select { display: flex; gap: 6px; flex-wrap: wrap; }
.date-select select { width: auto; flex: 1; min-width: 76px; }

.date-range { border: 1px solid var(--border); border-radius: 12px; padding: 12px; margin-bottom: 16px; }
.date-range .field { margin-bottom: 10px; }
.date-range-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--border-strong);
  background: var(--chip-bg);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  cursor: pointer;
}
.chip.excluded { opacity: 0.4; text-decoration: line-through; border-color: var(--border); background: transparent; }

.pager { display: flex; justify-content: space-between; align-items: center; margin: 16px 0; font-size: 14px; }
.pager a, .pager span { text-decoration: none; color: var(--fg); }
.pager .disabled { color: var(--fg-muted); }

.error { color: var(--danger); font-size: 14px; margin: 8px 0; padding: 10px; border: 1px solid var(--danger); border-radius: 8px; }
.hint { color: var(--fg-muted); font-size: 13px; }

.summary-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.summary-table td { padding: 8px 4px; border-bottom: 1px solid var(--border); font-size: 14px; }
.summary-table td:last-child { text-align: right; font-weight: 600; }

.list-actions { display: flex; gap: 8px; margin-top: 8px; }

.login-form { max-width: 320px; margin: 60px auto; display: flex; flex-direction: column; gap: 16px; }