* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f4f6f9;
  --sidebar-bg: #1e2a3a;
  --sidebar-text: #cfd8e3;
  --card: #ffffff;
  --border: #dde3ea;
  --text: #1c2733;
  --muted: #67788a;
  --primary: #0f62fe;
  --primary-dark: #0043ce;
  --danger: #d13438;
  --success: #107c41;
  --warn: #b95000;
}

body {
  font-family: "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.app { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  flex-shrink: 0;
  padding: 18px 12px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  color: #fff; font-weight: bold; font-size: 15px;
  padding: 6px 10px 20px;
}
.logo-icon { font-size: 20px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  color: var(--sidebar-text);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 2px;
  font-size: 13.5px;
}
.nav-item:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.nav-item.active { background: rgba(255, 255, 255, 0.14); color: #fff; }
.nav-icon { width: 20px; text-align: center; }

.main { flex: 1; padding: 28px 32px; max-width: 1200px; }

h1.page-title { font-size: 22px; margin-bottom: 4px; }
.page-desc { color: var(--muted); margin-bottom: 22px; font-size: 13px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card h2 { font-size: 15px; margin-bottom: 12px; }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

button, .btn {
  font-family: inherit;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
button:hover, .btn:hover { background: #f0f3f7; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { color: var(--danger); border-color: #f0c4c5; }
.btn-danger:hover { background: #fdf3f3; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

input[type="text"], input[type="password"], input[type="number"], input[type="url"], select, textarea {
  font-family: inherit;
  font-size: 13.5px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
  width: 100%;
}
textarea { line-height: 1.6; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid #a6c8ff; border-color: var(--primary); }

label.field { display: block; margin-bottom: 12px; }
label.field .label { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 5px; color: #38485a; }
label.field .hint { font-size: 11.5px; color: var(--muted); margin-top: 3px; }

table.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left; font-size: 12px; color: var(--muted);
  border-bottom: 2px solid var(--border);
  padding: 8px 10px;
  white-space: nowrap;
}
.table td { border-bottom: 1px solid var(--border); padding: 9px 10px; vertical-align: top; }
.table tr:hover td { background: #f8fafc; }

.badge {
  display: inline-block; padding: 2px 9px; border-radius: 20px;
  font-size: 11.5px; font-weight: 600;
}
.badge-gray { background: #eceff3; color: #55606d; }
.badge-blue { background: #e3ecff; color: #0043ce; }
.badge-green { background: #e2f3e9; color: var(--success); }
.badge-red { background: #fbe4e5; color: var(--danger); }
.badge-orange { background: #fff0e2; color: var(--warn); }

.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 13px; }
.alert-error { background: #fbe4e5; color: #8f2427; }
.alert-success { background: #e2f3e9; color: #0c5c31; }
.alert-info { background: #e8f0fe; color: #174ea6; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
@media (max-width: 900px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 18px;
}
.stat .num { font-size: 26px; font-weight: bold; }
.stat .lbl { font-size: 12px; color: var(--muted); margin-top: 2px; }

.progress-bar { height: 8px; background: #e8ecf1; border-radius: 5px; overflow: hidden; }
.progress-bar > div { height: 100%; background: var(--primary); transition: width 0.4s; }

code.var { background: #eef2f7; border: 1px solid var(--border); padding: 1px 6px; border-radius: 5px; font-size: 12px; }

.preview-img { max-width: 100%; border: 1px solid var(--border); border-radius: 6px; }
.mono { font-family: Consolas, Monaco, monospace; }