:root {
  --bg: #0c0d18; --bg2: #161827; --card: #1f2236; --line: #2d3149;
  --text: #e6e7ee; --muted: #8c91ad; --accent: #6ea7ff; --accent2: #ffd166;
  --error: #ff7a7a; --ok: #6ee7a7;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  font-size: 15px; line-height: 1.5;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--error); min-height: 1em; margin: 4px 0; font-size: 13px; }
.ok    { color: var(--ok); }

/* ----- auth screens ----- */
.auth-screen { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth-card {
  width: 100%; max-width: 380px; background: var(--card); border-radius: 12px;
  padding: 24px; border: 1px solid var(--line);
}
.auth-card h1 { margin: 0 0 4px; font-size: 22px; letter-spacing: 1px; }
.auth-form { display: grid; gap: 12px; margin-top: 16px; }
.auth-form label { display: grid; gap: 4px; font-size: 13px; }
.auth-form input, .auth-form select, .auth-form textarea, .form input, .form select, .form textarea {
  width: 100%; padding: 10px 12px; background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; font-size: 15px;
}
.btn {
  display: inline-block; padding: 10px 16px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg2); color: var(--text); font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover { background: #1f253c; }
.btn.primary { background: var(--accent); color: #0a1024; border-color: transparent; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { background: #3a1c20; color: var(--error); border-color: #5a2a30; }

/* ----- app shell ----- */
.app-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px; background: var(--bg2); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; letter-spacing: 1px; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  padding: 6px 10px; border-radius: 6px; color: var(--muted); text-decoration: none; font-size: 13px;
}
.nav a:hover, .nav a.active { background: var(--card); color: var(--text); }

main#view { padding: 16px; max-width: 1100px; margin: 0 auto; }

.section-title { margin: 0 0 12px; font-size: 18px; }
.subtitle      { margin: 16px 0 8px; font-size: 14px; color: var(--muted); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; margin-bottom: 12px;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.row.three { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 640px) { .row, .row.three { grid-template-columns: 1fr; } }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--muted); font-weight: 500; }
tbody tr:hover { background: rgba(255,255,255,0.02); }

.form { display: grid; gap: 10px; }
.form label { display: grid; gap: 4px; font-size: 13px; }
.form .row label { gap: 4px; }
.form-actions { display: flex; gap: 8px; margin-top: 8px; }

.tag {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  background: var(--bg2); color: var(--muted); font-size: 11px;
}

/* webkit のカレンダーアイコンをダークテーマで見やすく */
input[type="datetime-local"]::-webkit-calendar-picker-indicator,
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1) brightness(1.5);
  cursor: pointer;
  opacity: 0.8;
}

/* moon view */
.moon-page { max-width: 720px; margin: 0 auto; }
.moon-toolbar { margin-bottom: 16px; display: grid; gap: 8px; }
.moon-toolbar input[type="datetime-local"] {
  width: 100%; padding: 10px 12px;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 16px;
}
.moon-toolbar-row {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.moon-visual { padding: 8px 0 16px; text-align: center; }
.moon-card { text-align: left; }
.moon-block-title {
  margin: 0 0 8px; padding: 6px 10px;
  background: rgba(255,255,255,0.04); border-radius: 6px;
  font-size: 14px; font-weight: 500; color: var(--muted);
}
.kv-grid { grid-template-columns: max-content 1fr max-content 1fr !important; }
.moon-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px;
}
@media (max-width: 600px) {
  .moon-grid { grid-template-columns: 1fr; }
  .kv-grid { grid-template-columns: max-content 1fr !important; }
}
#mn-prev td, #mn-next td {
  padding: 6px 8px; font-size: 13px; font-variant-numeric: tabular-nums;
}
#mn-prev td:first-child, #mn-next td:first-child { white-space: nowrap; }

/* dashboard tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.tile {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 16px; text-decoration: none; color: var(--text); transition: transform 0.06s;
}
.tile:hover { transform: translateY(-1px); border-color: var(--accent); }
.tile h3 { margin: 0 0 4px; font-size: 14px; }
.tile p  { margin: 0; font-size: 12px; color: var(--muted); }