:root {
  color-scheme: light;
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Light Theme - Arctic Precision */
  --color-primary: #0ea5e9;
  --color-primary-hover: #0284c7;
  --color-secondary: #64748b;
  --color-accent: #06b6d4;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-text-primary: #0f172a;
  --color-text-secondary: #64748b;
  --color-text-inverse: #ffffff;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-success-bg: #d1fae5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fef3c7;
  --color-danger: #ef4444;
  --color-danger-bg: #fee2e2;
  --color-info: #3b82f6;
  --color-info-bg: #dbeafe;
  
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px rgba(15, 23, 42, 0.08);
  
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  background: var(--color-background);
  color: var(--color-text-primary);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  
  /* Dark Theme - Midnight Industrial */
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-secondary: #6b7280;
  --color-accent: #8b5cf6;
  --color-background: #0f172a;
  --color-surface: #1e293b;
  --color-surface-alt: #334155;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-inverse: #0f172a;
  --color-border: #334155;
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.15);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.15);
  --color-danger: #ef4444;
  --color-danger-bg: rgba(239, 68, 68, 0.15);
  --color-info: #06b6d4;
  --color-info-bg: rgba(6, 182, 212, 0.15);
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
}

/* Typography */
:root {
  --font-heading: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Roboto Mono', 'Courier New', monospace;
}

/* Spacing Scale */
:root {
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
}

/* Motion System */
:root {
  --duration-instant: 100ms;
  --duration-fast: 200ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-elastic: cubic-bezier(0.68, -0.55, 0.27, 1.55);
  --ease-sharp: cubic-bezier(0.4, 0, 0.6, 1);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-instant: 0ms;
    --duration-fast: 0ms;
    --duration-normal: 0ms;
    --duration-slow: 0ms;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-background);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background var(--duration-normal) var(--ease-smooth),
              color var(--duration-normal) var(--ease-smooth);
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

:focus:not(:focus-visible) {
  outline: none;
}

::selection {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.app-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  min-height: 100vh;
  transition: grid-template-columns var(--duration-normal) var(--ease-smooth);
}

.app-shell.sidebar-collapsed {
  grid-template-columns: 64px minmax(0, 1fr);
}

.sidebar {
  display: flex;
  position: sticky;
  top: 0;
  flex-direction: column;
  gap: 12px;
  height: 100vh;
  border-right: 1px solid var(--color-border);
  padding: 16px;
  background: var(--color-surface);
  overflow: hidden;
  overflow-y: auto;
  transition: background var(--duration-normal) var(--ease-smooth),
              border-color var(--duration-normal) var(--ease-smooth);
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--color-text-inverse);
  background: var(--color-primary);
  font-weight: 700;
  font-size: 16px;
  transition: background var(--duration-fast) var(--ease-smooth);
}

.brand-copy,
.brand-copy strong,
.brand-copy span {
  display: block;
}

.brand-copy {
  min-width: 0;
  white-space: nowrap;
}

.brand-copy strong {
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.brand-copy span {
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
}

.collapse-button {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  background: var(--color-surface-alt);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.collapse-button:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.collapse-button span {
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(135deg);
  transition: transform var(--duration-normal) var(--ease-smooth);
}

.sidebar-collapsed .collapse-button span {
  transform: rotate(-45deg);
}

.nav-list {
  display: grid;
  gap: 4px;
}

.nav-group {
  display: grid;
  gap: 4px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.nav-item,
.subnav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: none;
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--color-text-secondary);
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.nav-icon {
  display: grid;
  flex: 0 0 20px;
  place-items: center;
  width: 20px;
  height: 20px;
}

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

.nav-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.subnav {
  display: grid;
  gap: 2px;
  margin-left: 20px;
  margin-top: 4px;
}

.subnav-item {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 400;
}

.nav-item:hover,
.subnav-item:hover {
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
}

.nav-item.active,
.subnav-item.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.nav-item.active .nav-icon svg,
.subnav-item.active .nav-icon svg {
  color: var(--color-text-inverse);
}

.theme-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding: 12px;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  transition: background var(--duration-fast) var(--ease-smooth);
}

.theme-copy {
  min-width: 0;
  white-space: nowrap;
}

.theme-copy span {
  display: block;
  color: var(--color-text-secondary);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.theme-panel strong {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-top: 2px;
}

.switch {
  position: relative;
  flex: 0 0 auto;
  width: 36px;
  height: 20px;
}

.switch input {
  position: absolute;
  opacity: 0;
}

.switch span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background: var(--color-border);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-smooth);
}

.switch span::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: white;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-fast) var(--ease-elastic);
}

.switch input:checked + span {
  background: var(--color-primary);
}

.switch input:checked + span::after {
  transform: translateX(16px);
}

.sidebar-collapsed .sidebar {
  padding: 12px 8px;
}

.sidebar-collapsed .sidebar-header {
  justify-content: center;
  padding-bottom: 8px;
}

.sidebar-collapsed .brand {
  justify-content: center;
}

.sidebar-collapsed .brand-copy,
.sidebar-collapsed .nav-text,
.sidebar-collapsed .theme-copy {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.sidebar-collapsed .nav-item,
.sidebar-collapsed .subnav-item {
  justify-content: center;
  padding: 8px;
}

.sidebar-collapsed .subnav {
  margin-left: 0;
}

.sidebar-collapsed .theme-panel {
  justify-content: center;
  padding: 8px;
}

.main-panel {
  display: grid;
  align-content: start;
  gap: 20px;
  padding: 24px 32px;
  max-width: 1400px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h2 {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-primary);
}

h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
}

p {
  max-width: 640px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  font-size: 14px;
}

.section-kicker {
  display: block;
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.api-status {
  display: flex;
  align-items: center;
  gap: 12px;
}

.api-status span {
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
}

.api-status button {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 14px;
  color: var(--color-text-primary);
  background: var(--color-surface);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.api-status button:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-primary);
}

.placeholder-card {
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.primary-card {
  display: grid;
  align-content: start;
  gap: 12px;
}

.primary-card span {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: grid;
  gap: 20px;
}

.toolbar,
.inline-form,
.form-actions,
.section-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar {
  justify-content: space-between;
}

.toolbar input,
.inline-form input,
.form-grid input,
.form-grid select,
.form-grid textarea,
.modal-form input,
.modal-form select,
.modal-form textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--color-text-primary);
  background: var(--color-surface);
  font: inherit;
  font-size: 14px;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.toolbar input:focus,
.inline-form input:focus,
.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus,
.modal-form input:focus,
.modal-form select:focus,
.modal-form textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

:root[data-theme="dark"] .toolbar input:focus,
:root[data-theme="dark"] .inline-form input:focus,
:root[data-theme="dark"] .form-grid input:focus,
:root[data-theme="dark"] .form-grid select:focus,
:root[data-theme="dark"] .form-grid textarea:focus,
:root[data-theme="dark"] .modal-form input:focus,
:root[data-theme="dark"] .modal-form select:focus,
:root[data-theme="dark"] .modal-form textarea:focus {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.toolbar input::placeholder,
.inline-form input::placeholder,
.form-grid input::placeholder,
.form-grid textarea::placeholder,
.modal-form input::placeholder,
.modal-form textarea::placeholder {
  color: var(--color-text-secondary);
}

.toolbar input {
  max-width: 320px;
}

.inline-form {
  flex-wrap: wrap;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.inline-form input {
  max-width: 200px;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.form-grid .check-row {
  display: flex;
  flex-direction: row;
  gap: 8px;
}

.check-row input {
  width: auto;
}

.table-wrap {
  overflow: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.table-wrap::-webkit-scrollbar {
  height: 8px;
}

.table-wrap::-webkit-scrollbar-track {
  background: var(--color-surface-alt);
}

.table-wrap::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  border-bottom: 1px solid var(--color-border);
  padding: 12px 16px;
  text-align: left;
  vertical-align: middle;
  font-size: 14px;
}

th {
  position: relative;
  background: var(--color-surface-alt);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  user-select: none;
}

.th-button {
  border: none;
  padding: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  font-weight: inherit;
  text-transform: inherit;
  cursor: pointer;
}

.th-button::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 6px;
  vertical-align: middle;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  opacity: 0.3;
  transition: opacity var(--duration-fast);
}

.th-button:hover::after {
  opacity: 0.6;
  border-bottom: 4px solid currentColor;
}

.th-button[data-sort="asc"]::after {
  border-bottom: 4px solid currentColor;
  opacity: 1;
}

.th-button[data-sort="desc"]::after {
  border-top: 4px solid currentColor;
  opacity: 1;
}

.th-resize {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  cursor: col-resize;
  user-select: none;
  z-index: 2;
}

.th-resize:hover,
.th-resize.active {
  background: var(--color-primary);
  opacity: 0.3;
}

td code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--color-surface-alt);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  white-space: nowrap;
}

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

tbody tr[data-client-open],
tbody tr[data-product-open] {
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-smooth);
}

tbody tr[data-client-open]:hover,
tbody tr[data-product-open]:hover {
  background: var(--color-surface-alt);
}

.empty-row {
  color: var(--color-text-secondary);
  text-align: center;
  padding: 48px 16px;
}

.row-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  opacity: 0;
  transition: opacity var(--duration-fast);
}

tr:hover .row-actions,
.stack-item:hover .row-actions,
.modal-form .row-actions {
  opacity: 1;
}

.toolbar button,
.inline-form button,
.form-actions button,
.section-row button,
.row-actions button,
.file-upload button {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  color: var(--color-text-primary);
  background: var(--color-surface);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-smooth);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.toolbar button:hover,
.inline-form button:hover,
.form-actions button:hover,
.section-row button:hover,
.row-actions button:hover,
.file-upload button:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-primary);
}

.toolbar button#client-new,
.inline-form button[type="submit"],
.form-actions button[type="submit"] {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.toolbar button#client-new:hover,
.inline-form button[type="submit"]:hover,
.form-actions button[type="submit"]:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

.plain-button,
.row-actions .plain-button {
  color: var(--color-text-secondary);
  background: transparent;
}

.plain-button:hover,
.row-actions .plain-button:hover {
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
}

.danger-button,
.row-actions .danger-button {
  color: var(--color-danger);
  background: transparent;
  border-color: var(--color-danger);
}

.danger-button:hover,
.row-actions .danger-button:hover {
  background: var(--color-danger);
  color: var(--color-text-inverse);
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  background: transparent;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.icon-button:hover {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.icon-button.danger:hover {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}

.icon-button svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

.icon-button i {
  font-size: 18px;
  line-height: 1;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
}

.status-badge.active {
  color: var(--color-success);
  background: var(--color-success-bg);
}

.status-badge.inactive {
  color: var(--color-text-secondary);
  background: var(--color-surface-alt);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.form-grid label {
  display: grid;
  gap: 6px;
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
}

.form-grid textarea {
  min-height: 80px;
  resize: vertical;
}

.span-2 {
  grid-column: 1 / -1;
}

dialog {
  width: min(720px, calc(100% - 32px));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0;
  color: var(--color-text-primary);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
}

.modal-form {
  display: grid;
  gap: 20px;
  padding: 24px;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-form header,
.modal-form footer,
.section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-form header h2 {
  font-size: 22px;
}

.detail-block {
  display: grid;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.stack-list {
  display: grid;
  gap: 8px;
}

.stack-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  font-size: 14px;
  transition: background var(--duration-fast);
}

.stack-item:hover {
  background: var(--color-border);
}

.stack-item strong {
  font-weight: 600;
}

.stack-item p {
  font-size: 13px;
  margin-top: 2px;
}

.file-upload {
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-upload input {
  max-width: 240px;
  font-size: 13px;
}

.rename-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.rename-row input {
  min-width: 160px;
}

.logo-row {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

#company-logo-preview {
  display: none;
  max-width: 180px;
  max-height: 120px;
  border-radius: var(--radius-md);
  object-fit: contain;
  border: 1px solid var(--color-border);
}

#company-logo-preview.visible {
  display: block;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 100;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  color: var(--color-text-inverse);
  background: var(--color-text-primary);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-smooth);
  font-size: 14px;
  font-weight: 500;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.confirm-dialog {
  width: min(400px, calc(100% - 32px));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0;
  color: var(--color-text-primary);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
}

.confirm-dialog::backdrop {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
}

.confirm-content {
  padding: 24px;
}

.confirm-content h3 {
  margin: 0 0 12px 0;
  font-size: 18px;
  font-weight: 600;
}

.confirm-content p {
  margin: 0 0 24px 0;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.confirm-actions button {
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.confirm-actions .plain-button {
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
}

.confirm-actions .plain-button:hover {
  background: var(--color-border);
}

.confirm-actions .danger-button {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}

.confirm-actions .danger-button:hover {
  background: #dc2626;
  box-shadow: var(--shadow-md);
}

body.debug-mode [data-debug] {
  position: relative;
}

body.debug-mode [data-debug]::after {
  content: counter(debug);
  counter-increment: debug;
  position: absolute;
  top: 4px;
  left: 4px;
  z-index: 40;
  display: grid;
  place-items: center;
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  padding: 0 5px;
  color: white;
  background: var(--color-danger);
  font-size: 10px;
  font-weight: 700;
  pointer-events: none;
}

body.debug-mode {
  counter-reset: debug;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 100;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  color: var(--color-text-inverse);
  background: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
  transition: top var(--duration-fast);
}

.skip-link:focus {
  top: 16px;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .app-shell.sidebar-collapsed {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .main-panel {
    padding: 20px;
  }

  h1 {
    font-size: 28px;
  }

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

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar input {
    max-width: none;
  }
}