:root {
  color-scheme: light;
  --ink: #17323b;
  --muted: #5d7077;
  --primary: #0f6574;
  --primary-dark: #0b4e59;
  --primary-soft: #e5f4f5;
  --hard: #0f6574;
  --soft: #b76e18;
  --soft-bg: #fff2d8;
  --danger: #b42318;
  --danger-bg: #fff0ee;
  --success: #18734d;
  --success-bg: #e9f8f0;
  --border: #cad8db;
  --surface: #ffffff;
  --page: #f3f7f7;
  --sat: #176b9c;
  --sun: #b42318;
  --shadow: 0 10px 30px rgba(19, 51, 59, 0.09);
  font-family: "Yu Gothic UI", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-size: 16px; line-height: 1.65; }
button, input, select, textarea { font: inherit; }
button { touch-action: manipulation; }
.hidden { display: none !important; }
.shell { width: min(100% - 32px, 1120px); margin-inline: auto; }
.staff-shell { width: min(100% - 24px, 620px); padding: 24px 0 56px; }
.site-header { background: linear-gradient(135deg, #0a4957, #147385); color: #fff; padding: 18px 0; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.site-header h1 { margin: 0; font-size: clamp(1.45rem, 5vw, 2rem); line-height: 1.25; }
.eyebrow { margin: 0 0 3px; color: inherit; font-size: .82rem; font-weight: 700; letter-spacing: .08em; }
.privacy-mark { border: 1px solid rgba(255,255,255,.58); border-radius: 999px; padding: 4px 11px; font-size: .85rem; }
.panel { background: var(--surface); border: 1px solid #dbe5e7; border-radius: 18px; padding: clamp(20px, 5vw, 32px); box-shadow: var(--shadow); }
.panel + .panel, .message + .panel { margin-top: 16px; }
.panel h2 { margin: 4px 0 10px; font-size: clamp(1.35rem, 5vw, 1.8rem); line-height: 1.35; }
.lead { margin: 0 0 22px; color: var(--muted); }
.step-label { margin: 0; color: var(--primary); font-weight: 800; font-size: .86rem; }
.field-label { display: block; margin: 18px 0 7px; font-weight: 700; }
.text-input, .select-input, .date-input { width: 100%; min-height: 52px; border: 2px solid var(--border); border-radius: 10px; padding: 10px 13px; background: #fff; color: var(--ink); }
.text-input:focus, .select-input:focus, .date-input:focus { outline: 3px solid rgba(15,101,116,.18); border-color: var(--primary); }
.button { min-height: 52px; border: 2px solid transparent; border-radius: 11px; padding: 11px 18px; font-weight: 800; cursor: pointer; }
.button:disabled { opacity: .58; cursor: wait; }
.button.primary { background: var(--primary); color: #fff; }
.button.primary:hover { background: var(--primary-dark); }
.button.secondary { background: #fff; color: var(--primary); border-color: var(--primary); }
.button.danger { background: var(--danger); color: #fff; }
.button.small { min-height: 40px; padding: 6px 12px; font-size: .9rem; }
.button.full { width: 100%; margin-top: 24px; }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
.help-text { margin: 14px 0 0; color: var(--muted); font-size: .9rem; }
.message { margin-bottom: 16px; padding: 13px 16px; border-radius: 10px; background: var(--danger-bg); border: 1px solid #f1b8b1; color: #7a271a; font-weight: 700; }
.message.success { background: var(--success-bg); border-color: #a9ddc3; color: #0d5a3a; }
.panel-heading-row { display: flex; align-items: start; justify-content: space-between; gap: 14px; }
.text-button { border: 0; background: transparent; color: var(--primary); text-decoration: underline; padding: 8px; cursor: pointer; }
.mode-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 22px 0 10px; }
.mode-button { min-height: 64px; border: 2px solid var(--border); border-radius: 12px; background: #fff; color: var(--ink); cursor: pointer; display: grid; gap: 1px; place-content: center; }
.mode-button span { font-weight: 800; }
.mode-button small { color: var(--muted); }
.mode-button.active { border-color: var(--hard); background: var(--primary-soft); box-shadow: inset 0 0 0 1px var(--hard); }
.mode-button.soft.active { border-color: var(--soft); background: var(--soft-bg); box-shadow: inset 0 0 0 1px var(--soft); }
.selection-help { min-height: 50px; margin: 0 0 10px; color: var(--muted); font-size: .94rem; }
.calendar-wrap { overflow: hidden; border: 1px solid var(--border); border-radius: 13px; background: #fff; }
.weekday-row, .calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); }
.weekday-row { background: #edf2f3; border-bottom: 1px solid var(--border); }
.weekday-row span { padding: 7px 2px; text-align: center; font-size: .84rem; font-weight: 700; }
.weekday-row .sat, .calendar-day.sat { color: var(--sat); }
.weekday-row .sun, .calendar-day.sun, .calendar-day.holiday { color: var(--sun); }
.calendar-blank { min-height: 53px; border-right: 1px solid #e4ebed; border-bottom: 1px solid #e4ebed; background: #fafcfc; }
.calendar-day { position: relative; min-width: 0; min-height: 55px; border: 0; border-right: 1px solid #e4ebed; border-bottom: 1px solid #e4ebed; background: #fff; color: var(--ink); cursor: pointer; font-weight: 800; font-size: 1rem; }
.calendar-day:nth-child(7n), .calendar-blank:nth-child(7n) { border-right: 0; }
.calendar-day.today::after { content: "今日"; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%); font-size: .58rem; color: var(--muted); font-weight: 700; }
.calendar-day.selected-hard { background: var(--hard); color: #fff; }
.calendar-day.selected-soft { background: var(--soft-bg); color: #74420b; box-shadow: inset 0 0 0 3px var(--soft); }
.calendar-day.selected-hard::after, .calendar-day.selected-soft::after { color: inherit; }
.calendar-day:focus-visible { outline: 3px solid #f4b942; outline-offset: -3px; z-index: 2; }
.holiday-name { display: block; width: 100%; padding: 0 2px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: .52rem; font-weight: 600; }
.legend { display: flex; flex-wrap: wrap; gap: 10px 16px; margin: 12px 0 6px; color: var(--muted); font-size: .84rem; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.legend-dot { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.legend-dot.hard { background: var(--hard); }
.legend-dot.soft { background: var(--soft-bg); border: 2px solid var(--soft); }
.legend-dot.holiday { background: #fee2e2; border: 1px solid #ef8f8f; }
.summary-list { display: grid; gap: 14px; margin: 18px 0; }
.summary-block { padding: 15px 17px; border-radius: 11px; background: #f4f8f8; border-left: 5px solid var(--hard); }
.summary-block.soft { background: var(--soft-bg); border-left-color: var(--soft); }
.summary-block h3 { margin: 0 0 6px; font-size: 1rem; }
.summary-block ul { margin: 0; padding-left: 1.25rem; }
.summary-block p { margin: 0; color: var(--muted); }
.confirm-callout { padding: 14px; text-align: center; border-radius: 10px; background: #eaf3f4; font-weight: 800; }
.status-chip { display: inline-flex; padding: 4px 10px; border-radius: 999px; font-size: .86rem; font-weight: 800; }
.status-chip.success { background: var(--success-bg); color: var(--success); }
.status-chip.warning { background: var(--soft-bg); color: #7b460e; }
.complete-icon { display: grid; place-items: center; width: 54px; height: 54px; margin-bottom: 12px; border-radius: 50%; background: var(--success); color: #fff; font-size: 2rem; font-weight: 900; }
.completion { box-shadow: none; }
.submitted-time { padding-top: 14px; border-top: 1px solid var(--border); color: var(--muted); }

/* 管理者 */
.admin-shell { padding: 24px 0 64px; }
.admin-grid { display: grid; gap: 18px; }
.admin-panel { background: #fff; border: 1px solid #dbe5e7; border-radius: 16px; padding: 22px; box-shadow: 0 6px 20px rgba(19,51,59,.06); }
.admin-panel h2 { margin: 0 0 14px; font-size: 1.25rem; }
.admin-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.admin-nav a { color: var(--primary); background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; text-decoration: none; font-weight: 700; }
.kpi-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 12px; }
.kpi { padding: 15px; border-radius: 12px; background: #edf5f6; }
.kpi.warning { background: var(--soft-bg); }
.kpi.danger { background: var(--danger-bg); }
.kpi span { display: block; color: var(--muted); font-size: .84rem; }
.kpi strong { display: block; margin-top: 4px; font-size: 1.75rem; line-height: 1.1; }
.form-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 13px; }
.form-grid .wide { grid-column: span 2; }
.form-grid label { display: grid; align-content: start; gap: 5px; font-weight: 700; font-size: .9rem; }
.check-label { display: flex !important; flex-direction: row; align-items: center; gap: 8px !important; min-height: 52px; padding-top: 25px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
.data-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #e3eaec; vertical-align: top; }
.data-table th { background: #edf3f4; font-size: .86rem; white-space: nowrap; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .number-input { width: 72px; min-height: 40px; border: 1px solid var(--border); border-radius: 7px; padding: 6px 8px; }
.table-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.inline-list { margin: 0; padding-left: 1.1rem; }
.section-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0; }
.muted { color: var(--muted); }
.warning-text { color: var(--danger); font-weight: 800; }
.auth-card { width: min(100%, 520px); margin: 42px auto; }
.modal { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; padding: 16px; background: rgba(11,31,37,.62); }
.modal-card { width: min(100%, 680px); max-height: 92vh; overflow: auto; background: #fff; border-radius: 16px; padding: 22px; }
.modal-header { display: flex; justify-content: space-between; align-items: start; gap: 12px; }
.icon-button { width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 50%; background: #fff; cursor: pointer; font-size: 1.4rem; }
.compact-calendar .calendar-day, .compact-calendar .calendar-blank { min-height: 46px; }
code.inline { background: #edf2f3; border-radius: 4px; padding: 2px 5px; }

@media (max-width: 800px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .shell { width: min(100% - 20px, 1120px); }
  .staff-shell { width: min(100% - 16px, 620px); padding-top: 12px; }
  .panel { border-radius: 14px; padding: 19px 16px; }
  .button-row { grid-template-columns: 1fr; }
  .calendar-day { min-height: 52px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .wide { grid-column: span 1; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .admin-panel { padding: 16px; }
}

@media print {
  body { background: #fff; }
  .site-header, .button, .help-text { display: none !important; }
  .panel { border: 0; box-shadow: none; padding: 0; }
}