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

html, body {
  min-height: 100%;
  font-family: var(--font-sans);
  background-color: var(--color-page);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.mono, .tabular {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.app-header {
  background: #ffffff;
  color: var(--text-primary);
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--color-line);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sync-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: var(--color-surface-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--color-line);
}

.sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #94a3b8;
}

.sync-dot.cloud {
  background-color: #10b981;
}

.sync-dot.local {
  background-color: #0284c7;
}

.sync-dot.offline {
  background-color: #f59e0b;
}

.desktop-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
  display: flex;
  gap: 6px;
  padding: 0 20px;
  overflow-x: auto;
  scrollbar-width: none;
}

.desktop-nav::-webkit-scrollbar {
  display: none;
}

.nav-item {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 12px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-item:hover {
  color: var(--color-primary);
  background: var(--color-surface-subtle);
}

.nav-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

.nav-lock {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  opacity: 0.6;
  margin-left: 2px;
}

.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-line);
  padding: 6px 4px calc(6px + var(--safe-bottom));
  z-index: 50;
  justify-content: space-around;
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.05);
}

.mobile-nav-item {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 12px;
  cursor: pointer;
  min-width: 58px;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast);
}

.mobile-nav-item svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.mobile-nav-item.active {
  color: var(--color-primary);
  font-weight: 600;
}

.main-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 20px calc(24px + 60px);
}

@media (min-width: 769px) {
  .main-content {
    padding-bottom: 32px;
  }
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.grid-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 22px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-2xs);
  margin-bottom: 20px;
  transition: box-shadow var(--transition-fast);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.card-title {
  font-size: 15px;
  font-weight: 650;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-2xs);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 6px 0 4px;
  letter-spacing: -0.02em;
}

.stat-desc {
  font-size: 11px;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 550;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.2;
}

.btn:hover {
  background: var(--color-surface-subtle);
  border-color: #cbd5e1;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-danger {
  background: var(--status-danger-bg);
  color: var(--status-danger-text);
  border-color: var(--status-danger-border);
}

.btn-danger:hover {
  background: #ffe4e6;
}

.btn-sm {
  padding: 5px 9px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.col-span-2 {
  grid-column: span 2;
}

.form-group.col-span-full {
  grid-column: 1 / -1;
}

label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
}

input, select, textarea {
  font-family: inherit;
  font-size: 13.5px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  border: 1px solid #cbd5e1;
  background-color: var(--color-surface);
  color: var(--text-primary);
  width: 100%;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 92, 54, 0.12);
}

textarea {
  min-height: 76px;
  resize: vertical;
}

.password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.password-wrapper input {
  padding-right: 42px;
}

.password-toggle-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  padding: 6px;
  cursor: pointer;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.password-toggle-btn:hover {
  color: var(--text-primary);
}

.form-hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 3px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  font-size: 11.5px;
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.2;
}

.badge-ok {
  background: var(--status-ok-bg);
  color: var(--status-ok-text);
  border: 1px solid var(--status-ok-border);
}

.badge-warn {
  background: var(--status-warn-bg);
  color: var(--status-warn-text);
  border: 1px solid var(--status-warn-border);
}

.badge-danger {
  background: var(--status-danger-bg);
  color: var(--status-danger-text);
  border: 1px solid var(--status-danger-border);
}

.badge-neutral {
  background: var(--status-neutral-bg);
  color: var(--status-neutral-text);
  border: 1px solid var(--status-neutral-border);
}

.notice {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 18px;
  font-size: 13px;
  color: #064326;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
  white-space: nowrap;
}

th {
  background: var(--color-surface-subtle);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-line);
}

td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--color-line);
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: #fbfcfe;
}

.cell-wrap {
  white-space: normal;
  max-width: 220px;
}

.text-right {
  text-align: right;
}

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

.asset-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 14px;
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.asset-card:hover {
  border-color: #cbd5e1;
}

.asset-title {
  font-size: 14px;
  font-weight: 650;
  color: var(--text-primary);
}

.asset-meta {
  font-size: 11.5px;
  color: var(--text-muted);
}

.calendar-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.calendar-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  margin-bottom: 12px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.cal-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.cal-table {
  border-collapse: separate;
  border-spacing: 2px;
  width: max-content;
  min-width: 100%;
  font-size: 11.5px;
}

.cal-table th, .cal-table td {
  text-align: center;
  padding: 6px 3px;
  border: none;
}

.cal-table thead th {
  position: sticky;
  top: 0;
  background: var(--color-surface-subtle);
  font-weight: 600;
  color: var(--text-secondary);
  z-index: 5;
}

.cal-sticky-col {
  position: sticky;
  left: 0;
  background: var(--color-surface);
  z-index: 6;
  text-align: left !important;
  padding-left: 10px !important;
  min-width: 160px;
  font-weight: 600;
  border-right: 1px solid var(--color-line) !important;
}

.cal-table thead .cal-sticky-col {
  background: var(--color-surface-subtle);
  z-index: 7;
}

.cal-cell {
  width: 32px;
  height: 34px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.cal-cell:hover {
  opacity: 0.85;
  transform: scale(1.05);
}

.cal-free {
  background: var(--status-ok-bg);
  color: var(--status-ok-text);
  border: 1px solid var(--status-ok-border);
}

.cal-booked {
  background: var(--status-warn-bg);
  color: var(--status-warn-text);
  border: 1px solid var(--status-warn-border);
}

.cal-occupied {
  background: var(--status-danger-bg);
  color: var(--status-danger-text);
  border: 1px solid var(--status-danger-border);
}

.cal-today {
  outline: 2px solid var(--text-primary);
  outline-offset: -2px;
}

.cal-weekend {
  filter: contrast(0.95);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(12px) scale(0.98);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 16px;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--color-line);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: var(--color-surface-subtle);
}

#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: #0f172a;
  color: #ffffff;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 380px;
  animation: toastSlideIn 250ms ease forwards;
}

@keyframes toastSlideIn {
  from {
    transform: translateY(16px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 1024px) {
  .grid-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .asset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  .mobile-nav {
    display: flex;
  }

  .app-header {
    padding: 12px 16px;
  }
  .brand-title {
    font-size: 14.5px;
  }
  .brand-subtitle {
    display: none;
  }

  .grid-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .asset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #toast-container {
    left: 16px;
    right: 16px;
    bottom: calc(70px + var(--safe-bottom));
  }
}

@media (max-width: 480px) {
  .grid-stats {
    grid-template-columns: 1fr;
  }
  .asset-grid {
    grid-template-columns: 1fr;
  }
  .stat-value {
    font-size: 19px;
  }
}