:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #1f2937;
  --muted: #64748b;
  --border: #d9e2ec;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --warning: #f59e0b;
  --success: #16a34a;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px clamp(16px, 4vw, 40px);
  color: #fff;
  background: linear-gradient(135deg, #1e3a8a, #2563eb);
}

.app-header-compact {
  padding: 12px clamp(12px, 3vw, 28px);
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
  letter-spacing: 0.02em;
}

.app-header-compact h1 {
  font-size: clamp(1rem, 2.4vw, 1.25rem);
}

.subtitle {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.86);
}

.app-header-compact .subtitle {
  margin-top: 0;
  font-size: 0.82rem;
}

.version-badge {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-weight: 700;
}

.app-header-compact .version-badge {
  padding: 5px 9px;
  font-size: 0.78rem;
}

.app-shell {
  width: min(1120px, calc(100% - 24px));
  margin: 12px auto 40px;
}

.notice-box {
  padding: 14px 16px;
  margin-bottom: 16px;
  border: 1px solid #fde68a;
  border-left: 6px solid var(--warning);
  border-radius: var(--radius);
  background: #fffbeb;
  color: #78350f;
}

.compact-notice {
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 0.92rem;
}

.card {
  margin-bottom: 16px;
  padding: clamp(16px, 3vw, 24px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card h2,
.card h3 {
  margin-top: 0;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 78px;
  padding: 5px 10px;
  border-radius: 999px;
  color: #fff;
  background: var(--success);
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-pill.neutral {
  color: #334155;
  background: #e2e8f0;
}

.status-pill.warning {
  color: #78350f;
  background: #fde68a;
}

.status-pill.danger {
  color: #fff;
  background: var(--danger);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 700;
}

.form-field em {
  color: var(--muted);
  font-size: 0.82rem;
  font-style: normal;
  font-weight: 500;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  border-color: var(--primary);
}

.wide-field {
  grid-column: 1 / -1;
}

.form-help {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.primary-button,
.secondary-button,
.danger-button,
.small-button {
  border: 0;
  border-radius: 12px;
  font-weight: 700;
  transition:
    transform 0.08s ease,
    background-color 0.16s ease,
    box-shadow 0.16s ease;
}

.primary-button,
.secondary-button,
.danger-button {
  padding: 11px 16px;
}

.small-button {
  padding: 7px 10px;
  font-size: 0.88rem;
}

.large-action-button {
  min-height: 52px;
  font-size: 1.05rem;
}

.primary-button {
  color: #fff;
  background: var(--primary);
}

.primary-button:hover {
  background: var(--primary-dark);
}

.secondary-button {
  color: #0f172a;
  border: 1px solid var(--border);
  background: #eef2ff;
}

.secondary-button:hover {
  background: #e0e7ff;
}

.danger-button {
  color: #fff;
  background: var(--danger);
}

.danger-button:hover {
  background: var(--danger-dark);
}

.primary-button:active,
.secondary-button:active,
.danger-button:active,
.small-button:active {
  transform: translateY(1px);
}

.tab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
  padding: 8px 0;
}

.sticky-tab-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 247, 251, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(217, 226, 236, 0.8);
}

.tab-button,
.tab-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  background: #fff;
  text-decoration: none;
  font-weight: 700;
}

.tab-button.active {
  color: #fff;
  border-color: var(--primary);
  background: var(--primary);
}

.tab-link {
  margin-left: auto;
}

.view-panel {
  display: none;
}

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

.current-card {
  border-left: 6px solid var(--primary);
}

.current-display {
  min-height: 66px;
  padding: 16px;
  border-radius: 14px;
  background: var(--surface-soft);
  font-size: 1.08rem;
  font-weight: 700;
}

.current-display .time {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.stop-row {
  margin-top: 14px;
}

.task-start-card {
  border-left: 6px solid #93c5fd;
}

.task-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.task-button {
  min-height: 72px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  color: var(--text);
  text-align: left;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
}

.task-button:hover {
  border-color: var(--primary);
  background: #eff6ff;
}

.task-button strong {
  display: block;
  font-size: 1rem;
}

.task-button span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.86rem;
}

.summary-line {
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--muted);
}

.table-wrap {
  width: 100%;
  margin-top: 14px;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.data-table th,
.data-table td {
  padding: 10px 9px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: #f1f5f9;
  color: #334155;
  white-space: nowrap;
}

.data-table td {
  background: #fff;
}

.data-table tr:hover td {
  background: #f8fafc;
}

.action-cell {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.import-box {
  margin-top: 16px;
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
}

.file-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 12px;
  background: #eef2ff;
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

.file-label input {
  display: none;
}

.check-result {
  margin-top: 10px;
}

.check-list {
  margin: 8px 0 0;
  padding-left: 22px;
}

.check-ok {
  padding: 12px 14px;
  border-radius: 12px;
  background: #ecfdf5;
  color: #166534;
}

.check-warn {
  padding: 12px 14px;
  border-radius: 12px;
  background: #fffbeb;
  color: #78350f;
}

.danger-zone {
  border-color: #fecaca;
}

.app-footer {
  padding: 20px;
  color: var(--muted);
  text-align: center;
}

.admin-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
}

.metric-card .label {
  color: var(--muted);
  font-size: 0.86rem;
}

.metric-card .value {
  margin-top: 4px;
  font-size: 1.4rem;
  font-weight: 800;
}

.subtab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0;
}

.subtab-button {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-weight: 700;
}

.subtab-button.active {
  color: #fff;
  border-color: var(--primary);
  background: var(--primary);
}

.subtab-panel {
  display: none;
}

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

.empty-state {
  padding: 18px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
  color: var(--muted);
  text-align: center;
}

.error-text {
  color: var(--danger);
  font-weight: 700;
}

.success-text {
  color: var(--success);
  font-weight: 700;
}

.muted {
  color: var(--muted);
}

@media (max-width: 820px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .app-header-compact {
    padding: 8px 12px;
  }

  .app-header-compact h1 {
    font-size: 0.98rem;
  }

  .app-header-compact .subtitle {
    font-size: 0.76rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .task-grid {
    grid-template-columns: 1fr;
  }

  .tab-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .tab-button,
  .tab-link {
    min-height: 42px;
    padding: 8px 8px;
    font-size: 0.9rem;
  }

  .tab-link {
    grid-column: 1 / -1;
    margin-left: 0;
  }

  .admin-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .data-table {
    min-width: 760px;
  }
}

@media (max-width: 520px) {
  .app-shell {
    width: min(100% - 16px, 1120px);
    margin-top: 8px;
  }

  .card {
    padding: 14px;
  }

  .primary-button,
  .secondary-button,
  .danger-button {
    width: 100%;
  }

  .button-row {
    flex-direction: column;
  }

  .admin-summary-grid {
    grid-template-columns: 1fr;
  }

  .task-button {
    min-height: 62px;
  }

  .sticky-tab-nav {
    margin-left: -8px;
    margin-right: -8px;
    padding: 7px 8px;
  }
}