:root {
  --bg: #0b0f14;
  --surface: #141b24;
  --elevated: #1a2430;
  --border: #2a3648;
  --text: #e9f0f7;
  --muted: #8b9cb3;
  --accent: #4db0ff;
  --accent-dim: #2a7cb8;
  --success: #45d695;
  --warn: #e5b84a;
  --danger: #f07178;
  --violet: #b388ff;
  --radius: 12px;
  --font: "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --bg-grad-1: radial-gradient(1200px 600px at 10% -10%, #1a2a40 0%, transparent 55%);
  --bg-grad-2: radial-gradient(900px 500px at 100% 0%, #1a2535 0%, transparent 50%);
}

html[data-theme="light"] {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --elevated: #f0f3f8;
  --border: #d9e1ec;
  --text: #0b1220;
  --muted: #334155;
  --accent: #2563eb;
  --accent-dim: #1d4ed8;
  --success: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --violet: #7c3aed;
  --bg-grad-1: radial-gradient(1200px 600px at 10% -10%, rgba(37, 99, 235, 0.18) 0%, transparent 55%);
  --bg-grad-2: radial-gradient(900px 500px at 100% 0%, rgba(124, 58, 237, 0.12) 0%, transparent 50%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg-grad-1), var(--bg-grad-2), var(--bg);
  color: var(--text);
  line-height: 1.55;
}

.app {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

.header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.header-actions .hint {
  margin: 0;
}

.header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.badge {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.15rem 0.5rem;
  font-size: 0.65rem;
  font-weight: 600;
  vertical-align: middle;
  border-radius: 999px;
  background: rgba(77, 176, 255, 0.15);
  color: var(--accent);
  border: 1px solid rgba(77, 176, 255, 0.35);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 1.25rem 0 1rem;
  padding: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.tab {
  font: inherit;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
}

.tab:hover {
  color: var(--text);
  background: var(--elevated);
}

.tab.active {
  color: var(--text);
  background: var(--elevated);
  border-color: var(--border);
  box-shadow: 0 0 0 1px rgba(77, 176, 255, 0.25);
}

.tab-panel[hidden] {
  display: none !important;
}

.tab-panel.active {
  display: block;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
}

.panel h2 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
}

.controls-inline {
  margin-bottom: 0.75rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.82rem;
  color: var(--muted);
}

label.grow {
  flex: 1;
  min-width: 160px;
}

input,
select,
button {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
}

button {
  cursor: pointer;
  background: var(--accent-dim);
  border-color: var(--accent);
  color: #fff;
}

button:hover {
  filter: brightness(1.06);
}

button.secondary {
  background: var(--elevated);
  border-color: var(--border);
  color: var(--text);
}

button.danger {
  background: #40242a;
  border-color: var(--danger);
}

button.small {
  padding: 0.2rem 0.5rem;
  font-size: 0.78rem;
}

.hint {
  margin: 0.65rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.muted {
  color: var(--muted);
  font-size: 0.82rem;
}

.staff-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.staff-form input {
  flex: 1;
  min-width: 0;
}

.staff-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.staff-list li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.6rem;
  background: var(--bg);
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.65rem;
}

.kpi {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
}

.kpi .label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi .value {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 0.15rem;
}

.mece-list {
  margin: 0 0 0.75rem;
  padding-left: 1.1rem;
  color: var(--text);
  font-size: 0.88rem;
}

.mece-list li {
  margin-bottom: 0.35rem;
}

.outcome-legend {
  margin: 0;
  display: grid;
  gap: 0.35rem 1rem;
}

.outcome-legend dt {
  font-weight: 600;
  color: var(--accent);
  margin: 0;
}

.outcome-legend dd {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.summary-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
}

.summary-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.summary-card dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 0.65rem;
  font-size: 0.82rem;
}

.summary-card dt {
  color: var(--muted);
}

.summary-card dd {
  margin: 0;
  text-align: right;
}

.shift-form,
.bulk-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  align-items: flex-end;
}

.bulk-days {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.75rem;
}

.bulk-days label {
  flex-direction: row;
  align-items: center;
  gap: 0.25rem;
  color: var(--text);
  font-size: 0.85rem;
}

.quick-rows {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.quick-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 2fr auto;
  gap: 0.5rem;
  align-items: end;
  padding: 0.55rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
}

.quick-row .hidden {
  display: none !important;
}

.hidden {
  display: none !important;
}

.month-cal {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  font-size: 0.78rem;
}

.day-summary {
  margin-bottom: 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
}

.day-summary h3 {
  margin: 0 0 0.35rem;
  font-size: 0.86rem;
  color: var(--text);
}

.day-schedule-list {
  margin: 0;
  padding-left: 1rem;
  font-size: 0.8rem;
}

.day-schedule-list li {
  margin-bottom: 0.2rem;
}

.punch-open {
  color: var(--warn);
}

.cal-head {
  text-align: center;
  color: var(--muted);
  padding: 0.25rem;
  font-weight: 600;
}

.cal-cell {
  min-height: 82px;
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
}

.cal-cell.in-month {
  color: var(--text);
}

.cal-cell.weekend {
  opacity: 0.45;
}

.cal-cell.weekday-hot {
  border-color: rgba(77, 176, 255, 0.45);
  cursor: pointer;
}

.cal-cell.weekday-hot:hover {
  background: var(--elevated);
}

.cal-cell .num {
  font-weight: 700;
  font-size: 0.85rem;
}

.cal-cell .sub {
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 2px;
}

.cal-lines {
  margin-top: 3px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cal-line {
  font-size: 0.62rem;
  line-height: 1.2;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cal-line.actual {
  color: var(--accent);
}

.cal-cell.selected-day {
  box-shadow: inset 0 0 0 1px var(--accent);
}

.dialog {
  border: none;
  padding: 0;
  background: transparent;
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.dialog-card {
  width: min(460px, calc(100vw - 2rem));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  color: var(--text);
}

.dialog-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--text);
}

.dialog-card p,
.dialog-card label {
  color: var(--text);
}

.dialog-card .btn-row {
  margin-top: 0.6rem;
}

/* ダークモード時に日付入力の文字を明るく保つ */
input[type="date"],
input[type="month"] {
  color-scheme: dark;
}

/* ライトモード時は日付入力をライト系へ */
html[data-theme="light"] input[type="date"],
html[data-theme="light"] input[type="month"] {
  color-scheme: light;
}

.settings-wrap {
  position: relative;
}

.settings-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: min(520px, calc(100vw - 2rem));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  z-index: 30;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.settings-sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.6rem 0;
}

.settings-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 2px;
  vertical-align: middle;
}

.table-wrap {
  overflow-x: auto;
}

.shift-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.shift-table th,
.shift-table td {
  padding: 0.45rem 0.55rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.shift-table th {
  color: var(--muted);
  font-weight: 500;
}

.oc-present {
  color: var(--success);
}
.oc-late {
  color: var(--warn);
}
.oc-early {
  color: var(--violet);
}
.oc-absent {
  color: var(--danger);
}
.oc-leave {
  color: var(--muted);
}

.empty {
  color: var(--muted);
  padding: 0.5rem 0;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.file-btn {
  display: inline-block;
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 0.9rem;
}

.file-btn:hover {
  filter: brightness(1.06);
}