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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 8px;
}

body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ─── Layout ─── */
#app { display: flex; flex-direction: column; min-height: 100vh; }

header {
  background: var(--primary);
  color: white;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 4px rgba(0,0,0,.15);
}
header h1 { font-size: 1.1rem; font-weight: 700; }
.header-right { display: flex; align-items: center; gap: 1rem; font-size: .9rem; }
.header-right button { background: rgba(255,255,255,.2); border: none; color: white; padding: .35rem .8rem; border-radius: 4px; cursor: pointer; }
.header-right button:hover { background: rgba(255,255,255,.3); }

nav {
  background: white;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 0;
  padding: 0 1.5rem;
}
nav button {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: .85rem 1.2rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  transition: color .15s;
}
nav button:hover { color: var(--primary); }
nav button.active { color: var(--primary); border-bottom-color: var(--primary); }

main { flex: 1; padding: 1.5rem; max-width: 1000px; margin: 0 auto; width: 100%; }

/* ─── Card ─── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}
.card h2 { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }

/* ─── Forms ─── */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .85rem; font-weight: 500; margin-bottom: .35rem; color: var(--text-muted); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: .55rem .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .95rem;
  transition: border-color .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.1rem;
  border: none;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { opacity: .85; }
.btn-sm { padding: .3rem .7rem; font-size: .8rem; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg); }

/* ─── Table ─── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; padding: .6rem .9rem; background: var(--bg); font-size: .8rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .03em; }
td { padding: .7rem .9rem; border-top: 1px solid var(--border); }
tr:hover td { background: #f8fafc; }

/* ─── Badges ─── */
.badge {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
}
.badge-present { background: #dcfce7; color: var(--success); }
.badge-absent  { background: #fee2e2; color: var(--danger); }
.badge-late    { background: #fef3c7; color: var(--warning); }
.badge-early   { background: #ede9fe; color: #7c3aed; }
.badge-other   { background: #f1f5f9; color: var(--text-muted); }

/* ─── Login ─── */
#login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.login-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
  padding: 2.5rem;
  width: 100%;
  max-width: 380px;
}
.login-card h1 { text-align: center; margin-bottom: .5rem; font-size: 1.4rem; }
.login-card p { text-align: center; color: var(--text-muted); margin-bottom: 1.5rem; font-size: .9rem; }

/* ─── Status row ─── */
.status-select { display: flex; gap: .5rem; flex-wrap: wrap; }
.status-btn {
  padding: .45rem 1rem;
  border: 2px solid var(--border);
  border-radius: 999px;
  background: white;
  cursor: pointer;
  font-size: .88rem;
  font-weight: 500;
  transition: all .15s;
}
.status-btn[data-value="present"].selected { border-color: var(--success); background: #dcfce7; color: var(--success); }
.status-btn[data-value="absent"].selected  { border-color: var(--danger);  background: #fee2e2; color: var(--danger); }
.status-btn[data-value="late"].selected    { border-color: var(--warning); background: #fef3c7; color: var(--warning); }
.status-btn[data-value="early"].selected   { border-color: #7c3aed; background: #ede9fe; color: #7c3aed; }
.status-btn[data-value="other"].selected   { border-color: var(--text-muted); background: #f1f5f9; color: var(--text-muted); }

/* ─── Misc ─── */
.alert { padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: .9rem; }
.alert-error   { background: #fee2e2; color: #991b1b; }
.alert-success { background: #dcfce7; color: #166534; }

.empty { text-align: center; padding: 2.5rem; color: var(--text-muted); font-size: .9rem; }

.flex-end { display: flex; justify-content: flex-end; gap: .5rem; margin-top: 1rem; }
.flex-between { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem; }

/* ─── Report summary ─── */
.report-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.summary-box { background: white; border-radius: var(--radius); padding: 1rem 1.25rem; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.summary-box .label { font-size: .78rem; color: var(--text-muted); font-weight: 500; }
.summary-box .value { font-size: 1.6rem; font-weight: 700; margin-top: .2rem; }
.summary-box.present .value { color: var(--success); }
.summary-box.absent  .value { color: var(--danger); }
.summary-box.late    .value { color: var(--warning); }
.summary-box.early   .value { color: #7c3aed; }
.summary-box.other   .value { color: var(--text-muted); }

/* ─── 出欠リスト（2行表示） ─── */
.att-list { display: flex; flex-direction: column; gap: 0; }
.att-item {
  padding: .65rem 0;
  border-bottom: 1px solid var(--border);
}
.att-item:last-child { border-bottom: none; }
.att-row1 {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: .5rem;
}
.att-date { font-size: .95rem; font-weight: 500; }
.att-actions { display: flex; gap: .4rem; flex-shrink: 0; }
.att-row2 {
  margin-top: .3rem;
  font-size: .85rem;
  color: var(--text-muted);
  padding-left: .1rem;
}

/* ─── カレンダー ─── */
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: .75rem;
}
.cal-dow {
  text-align: center;
  font-size: .78rem;
  font-weight: 700;
  padding: .3rem 0;
  color: var(--text-muted);
}
.cal-dow.sun { color: #dc2626; }
.cal-dow.sat { color: #2563eb; }
.cal-cell {
  min-height: 64px;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 4px;
  background: white;
  vertical-align: top;
}
.cal-cell.empty { background: transparent; border-color: transparent; }
.cal-cell.today { background: #eff6ff; border-color: #93c5fd; }
.cal-cell.sun .cal-day { color: #dc2626; }
.cal-cell.sat .cal-day { color: #2563eb; }
.cal-day { font-size: .82rem; font-weight: 600; margin-bottom: 2px; }
.cal-names { display: flex; flex-direction: column; gap: 2px; }
.cal-name {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 999px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.cal-name-present { background: #dcfce7; color: #15803d; }
.cal-name-late    { background: #fef3c7; color: #b45309; }
.cal-name-early   { background: #ede9fe; color: #7c3aed; }
.cal-legend {
  display: flex;
  gap: .75rem;
  justify-content: flex-end;
  padding-top: .5rem;
  font-size: .82rem;
}

@media (max-width: 600px) {
  .cal-cell { min-height: 52px; padding: 2px 3px; }
  .cal-name { font-size: .65rem; padding: 1px 3px; }
  .cal-day  { font-size: .78rem; }
}

.hidden { display: none !important; }

input[type="date"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  box-sizing: border-box;
  padding-right: .75rem;
}

@media (max-width: 600px) {
  main { padding: 1rem .75rem; }
  .form-row { grid-template-columns: 1fr; }
  header h1 { font-size: 1rem; }
}