:root {
  color-scheme: dark;
  --ink: #f4f7f6;
  --muted: #aab7b4;
  --line: #31403d;
  --surface: #18211f;
  --surface-2: #202b28;
  --panel: #111917;
  --accent: #12a394;
  --accent-dark: #0b766c;
  --amber: #ffbf2f;
  --danger: #c8463a;
  --danger-dark: #90251e;
  --sign-bg: #111412;
  --sign-led: #ffd45a;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.32);
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background: linear-gradient(180deg, #0f1715 0%, #17211f 100%);
}

.login-screen {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 1.25rem;
}

.login-card {
  display: grid;
  width: min(100%, 420px);
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 25, 23, 0.96);
  box-shadow: var(--shadow);
}

.version-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.login-card label {
  display: grid;
  gap: 0.35rem;
}

.checkbox-field {
  display: flex !important;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.55rem;
}

.checkbox-field input {
  width: auto;
}

.login-card button {
  color: white;
  border-color: var(--accent);
  background: var(--accent);
}

.password-field {
  position: relative;
  display: block;
}

.password-field input {
  width: 100%;
  padding-right: 3rem;
}

.login-card .password-toggle {
  position: absolute;
  top: 50%;
  right: 0.35rem;
  transform: translateY(-50%);
  display: grid;
  width: 36px;
  height: 36px;
  min-height: 0;
  padding: 0;
  place-items: center;
  color: var(--muted);
  border-color: transparent;
  background: transparent;
}

.login-card .password-toggle:hover,
.login-card .password-toggle:focus-visible {
  color: var(--ink);
  border-color: var(--accent);
  background: rgba(18, 163, 148, 0.14);
}

.password-toggle svg {
  width: 21px;
  height: 21px;
}


.snackbar {
  position: fixed;
  z-index: 80;
  top: 1rem;
  left: 50%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  width: min(460px, calc(100vw - 2rem));
  padding: 0.72rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: #f8fffc;
  background: rgba(19, 82, 70, 0.98);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.38);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -10px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.snackbar.show {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.snackbar[hidden] {
  display: grid !important;
  visibility: hidden;
}

.snackbar.error {
  background: rgba(104, 35, 30, 0.98);
}

.snackbar.warning {
  background: rgba(105, 74, 24, 0.98);
}

.snackbar-icon {
  position: relative;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.snackbar-icon::before {
  display: block;
  width: 10px;
  height: 6px;
  border-bottom: 2px solid currentColor;
  border-left: 2px solid currentColor;
  content: "";
  transform: translateY(-1px) rotate(-45deg);
}

.snackbar.error .snackbar-icon::before,
.snackbar.warning .snackbar-icon::before {
  width: auto;
  height: auto;
  border: 0;
  content: "!";
  font-weight: 900;
  transform: none;
}

.snackbar-copy {
  display: grid;
  min-width: 0;
  gap: 0.1rem;
}

.snackbar-copy strong,
.snackbar-copy span {
  overflow-wrap: anywhere;
  white-space: normal;
}

.snackbar .snackbar-close {
  width: 28px;
  height: 28px;
  min-width: 28px;
  padding: 0;
  color: #f8fffc;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  font-size: 1.25rem;
  line-height: 1;
}

.snackbar .snackbar-close:hover {
  background: rgba(255, 255, 255, 0.28);
}
@media (max-width: 620px) {
  .snackbar {
    top: 0.75rem;
    width: calc(100vw - 1.5rem);
    grid-template-columns: auto minmax(0, 1fr);
  }
  .snackbar .snackbar-close {
    grid-column: auto;
  }
}
.management-dialog {
  width: min(620px, calc(100vw - 2rem));
  padding: 0;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.management-dialog::backdrop {
  background: rgba(0, 0, 0, 0.58);
}

.dialog-card {
  display: grid;
  gap: 0.85rem;
  padding: 1rem;
}

.dialog-header,
.dialog-actions {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.dialog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.dialog-grid label,
.customer-select-field,
.dialog-fieldset {
  display: grid;
  gap: 0.35rem;
}

.user-management-grid {
  grid-template-columns: 1fr;
}

.dialog-picker-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px 42px;
  gap: 0.5rem;
  align-items: end;
}

.dialog-picker-row label {
  min-width: 0;
}
.dialog-fieldset {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-column: 1 / -1;
  align-items: end;
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.dialog-fieldset legend {
  padding: 0 0.35rem;
}

.dialog-result {
  padding: 0.75rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--ink);
  background: rgba(18, 163, 148, 0.16);
}

.temporary-password-panel {
  display: grid;
  gap: 0.65rem;
  padding: 0.85rem;
  border: 1px solid rgba(255, 191, 47, 0.55);
  border-radius: 6px;
  background: rgba(255, 191, 47, 0.1);
}

.temporary-password-panel strong,
.temporary-password-panel span {
  display: block;
}

.temporary-password-panel span {
  color: var(--muted);
}

.copy-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.55rem;
}

.copy-field input {
  font-family: Consolas, "Courier New", monospace;
  font-weight: 700;
}

@media (max-width: 680px) {
  .dialog-grid,
  .dialog-fieldset,
  .dialog-picker-row,
  .copy-field {
    grid-template-columns: 1fr;
  }

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

[hidden] {
  display: none !important;
}

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

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.66rem 0.85rem;
  color: var(--ink);
  background: var(--surface);
  cursor: pointer;
}

button:hover,
.file-button:hover {
  border-color: var(--accent);
}

button.primary,
.file-button.primary {
  color: var(--ink);
  border-color: var(--line);
  background: var(--surface);
}

button.primary:hover,
.file-button.primary:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--surface);
}

button.danger {
  color: var(--ink);
  border-color: var(--line);
  background: var(--surface);
}

button.danger:hover {
  color: var(--ink);
  border-color: var(--danger);
  background: var(--surface);
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
}

.app-shell.sidebar-collapsed {
  grid-template-columns: 68px 1fr;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 0;
  height: 100vh;
  padding: 1.25rem;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: rgba(12, 18, 17, 0.96);
}

.sidebar-header {
  display: grid;
  gap: 0.15rem;
}

.sidebar-header h1 {
  font-size: 1.25rem;
}

.sidebar-header p {
  color: var(--muted);
}

.app-shell.sidebar-collapsed .sidebar {
  padding: 0.75rem 0.5rem;
}

.app-shell.sidebar-collapsed .sidebar-header {
  display: none;
}

.sidebar-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px;
  gap: 0.75rem;
  align-items: end;
}

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

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.app-shell.sidebar-collapsed .search,
.app-shell.sidebar-collapsed .destination-section-title,
.app-shell.sidebar-collapsed .destination-list {
  display: none;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 1.22rem;
  line-height: 1.2;
}

h2 {
  font-size: 1rem;
  line-height: 1.25;
}

p,
small,
label span,
legend {
  color: var(--muted);
}

.application-controls {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(180px, 1fr) auto;
  gap: 0.75rem;
  align-items: end;
  margin-top: 0.85rem;
}

.application-controls label {
  display: grid;
  gap: 0.35rem;
}

.application-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.icon-button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  padding: 0;
  font-size: 1.55rem;
  line-height: 1;
  color: var(--ink);
  border-color: var(--line);
  background: var(--surface);
}

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

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

.icon-button svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.file-button.icon-button {
  display: grid;
  position: relative;
  padding: 0;
}

.customer-details {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.035);
}

.destination-panel .customer-details {
  grid-template-columns: 42px minmax(0, 1fr) auto;
  margin-top: 0.75rem;
}

.account-avatar {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: rgba(18, 163, 148, 0.22);
}
.account-avatar svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.customer-summary {
  display: grid;
  min-width: 0;
  gap: 0.08rem;
  margin: 0;
}

.customer-summary div {
  min-width: 0;
}

.customer-summary dt {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.customer-summary dd {
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.customer-summary div:first-child dd {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.customer-summary div:nth-child(2) dd {
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 800;
}

.customer-summary div:nth-child(3) dd {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 500;
}

.customer-actions {
  display: flex;
  align-self: start;
  justify-content: flex-end;
  gap: 0.5rem;
}

.file-button.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.icon-button[data-tooltip]::after,
button[data-tooltip]::after,
.file-button[data-tooltip]::after {
  position: absolute;
  z-index: 20;
  left: 50%;
  bottom: calc(100% + 8px);
  max-width: 220px;
  padding: 0.34rem 0.5rem;
  border: 1px solid var(--accent);
  border-radius: 5px;
  color: var(--ink);
  background: #0b2b27;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.32);
  content: attr(data-tooltip);
  font-size: 0.78rem;
  line-height: 1.2;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 4px);
  transition: opacity 140ms ease, transform 140ms ease;
  white-space: nowrap;
}

.danger[data-tooltip]::after {
  border-color: var(--danger);
  background: #341512;
}

.icon-button[data-tooltip]::before,
button[data-tooltip]::before,
.file-button[data-tooltip]::before {
  position: absolute;
  z-index: 21;
  left: 50%;
  bottom: calc(100% + 3px);
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  background: #0b2b27;
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 4px) rotate(45deg);
  transition: opacity 140ms ease, transform 140ms ease;
}

.danger[data-tooltip]::before {
  border-right-color: var(--danger);
  border-bottom-color: var(--danger);
  background: #341512;
}

.icon-button[data-tooltip]:hover::after,
button[data-tooltip]:hover::after,
.file-button[data-tooltip]:hover::after,
.icon-button[data-tooltip]:focus-visible::after,
button[data-tooltip]:focus-visible::after,
.file-button[data-tooltip]:focus-within::after,
.icon-button[data-tooltip]:hover::before,
button[data-tooltip]:hover::before,
.file-button[data-tooltip]:hover::before,
.icon-button[data-tooltip]:focus-visible::before,
button[data-tooltip]:focus-visible::before,
.file-button[data-tooltip]:focus-within::before {
  opacity: 1;
  transform: translate(-50%, 0);
}


.management-dialog .icon-button[data-tooltip]::after,
.management-dialog button[data-tooltip]::after {
  right: 0;
  left: auto;
  transform: translate(0, 4px);
}

.management-dialog .icon-button[data-tooltip]::before,
.management-dialog button[data-tooltip]::before {
  right: 16px;
  left: auto;
  transform: translate(0, 4px) rotate(45deg);
}

.management-dialog .icon-button[data-tooltip]:hover::after,
.management-dialog button[data-tooltip]:hover::after,
.management-dialog .icon-button[data-tooltip]:focus-visible::after,
.management-dialog button[data-tooltip]:focus-visible::after {
  transform: translate(0, 0);
}

.management-dialog .icon-button[data-tooltip]:hover::before,
.management-dialog button[data-tooltip]:hover::before,
.management-dialog .icon-button[data-tooltip]:focus-visible::before,
.management-dialog button[data-tooltip]:focus-visible::before {
  transform: translate(0, 0) rotate(45deg);
}
.management-dialog button[data-tooltip-placement="right"]::after,
.management-dialog .icon-button[data-tooltip-placement="right"]::after {
  top: 50%;
  right: auto;
  bottom: auto;
  left: calc(100% + 8px);
  transform: translate(4px, -50%);
}

.management-dialog button[data-tooltip-placement="right"]::before,
.management-dialog .icon-button[data-tooltip-placement="right"]::before {
  top: 50%;
  right: auto;
  bottom: auto;
  left: calc(100% + 4px);
  border-top: 1px solid var(--accent);
  border-right: 0;
  border-bottom: 0;
  border-left: 1px solid var(--accent);
  transform: translate(4px, -50%) rotate(-45deg);
}

.management-dialog button[data-tooltip-placement="right"]:hover::after,
.management-dialog .icon-button[data-tooltip-placement="right"]:hover::after,
.management-dialog button[data-tooltip-placement="right"]:focus-visible::after,
.management-dialog .icon-button[data-tooltip-placement="right"]:focus-visible::after {
  transform: translate(0, -50%);
}

.management-dialog button[data-tooltip-placement="right"]:hover::before,
.management-dialog .icon-button[data-tooltip-placement="right"]:hover::before,
.management-dialog button[data-tooltip-placement="right"]:focus-visible::before,
.management-dialog .icon-button[data-tooltip-placement="right"]:focus-visible::before {
  transform: translate(0, -50%) rotate(-45deg);
}
.search {
  display: grid;
  gap: 0.35rem;
}

.destination-section-title {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: -0.65rem;
}

.destination-section-title span,
.destination-section-title small {
  color: var(--muted);
  font-size: 1rem;
}

.destination-section-title small {
  font-size: 0.82rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.72rem 0.78rem;
  color: var(--ink);
  background: var(--surface);
}

.field-hint {
  display: block;
  min-height: 1rem;
  font-size: 0.78rem;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible,
.file-button:focus-within {
  outline: 3px solid rgba(15, 118, 110, 0.24);
  border-color: var(--accent);
}

.file-button {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.66rem 0.85rem;
  color: var(--ink);
  background: var(--surface);
  cursor: pointer;
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.destination-list {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  gap: 0.35rem;
  overflow: auto;
  padding-right: 0.2rem;
  color: var(--ink);
}

.destination-item {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 48px;
  padding: 0.46rem 0.56rem;
  color: var(--ink);
  text-align: left;
}

.destination-item.active {
  border-color: var(--accent);
  background: rgba(18, 163, 148, 0.18);
}

.item-route {
  min-width: 28px;
  color: var(--muted);
  font-weight: 800;
  font-size: 0.88rem;
  overflow: hidden;
  text-align: left;
}

.item-main {
  min-width: 0;
}

.item-main strong,
.item-main small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.item-main small {
  display: none;
}

.item-code {
  display: none;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(460px, 1fr);
  grid-auto-rows: min-content;
  align-items: stretch;
  height: 100vh;
  overflow: auto;
  gap: 1rem;
  padding: 1.25rem;
}

.editor-panel,
.destination-panel,
.preview-panel,
.sign-editor-panel,
.export-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background: rgba(17, 25, 23, 0.94);
  box-shadow: var(--shadow);
}

.export-panel {
  grid-column: 1 / -1;
}

.destination-panel {
  grid-column: 1;
}

.preview-panel {
  grid-column: 2;
}

.sign-editor-panel {
  grid-column: 1 / -1;
}

.panel-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.5rem;
}

.preview-toolbar {
  display: grid;
  grid-template-columns: minmax(140px, 220px) 1fr;
  gap: 0.75rem;
  align-items: end;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.preview-toolbar .panel-actions {
  justify-content: flex-end;
}

.compact-destination-form {
  grid-template-columns: minmax(130px, 220px) minmax(220px, 420px) 1fr auto;
  align-items: end;
  gap: 0.7rem;
  margin-top: 0.65rem;
}

.destination-actions {
  grid-column: 4;
  justify-content: flex-start;
  align-self: end;
}

.inline-field {
  display: grid;
  min-width: 140px;
  gap: 0.25rem;
}

.inline-field input {
  min-height: 40px;
  padding-block: 0.54rem;
}

.status-line {
  margin-top: 0.2rem;
  font-size: 0.86rem;
}

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

.destination-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-top: 1rem;
}

.destination-form label,
fieldset {
  display: grid;
  gap: 0.35rem;
}

.destination-form label:nth-child(3),
.destination-form label:nth-child(4),
fieldset {
  grid-column: 1 / -1;
}

.destination-form.compact-destination-form {
  grid-template-columns: minmax(130px, 220px) minmax(220px, 420px) 1fr auto;
}

.destination-form.compact-destination-form .destination-name-field {
  grid-column: auto;
}

.editor-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
  color: var(--muted);
}

.editor-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--line);
}

.editor-divider span {
  font-weight: 700;
  color: var(--ink);
}

fieldset {
  margin: 0;
  border: 0;
  padding: 0;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
}

.segmented-control label {
  display: grid;
  min-height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: var(--surface);
  cursor: pointer;
}

.segmented-control input {
  position: absolute;
  opacity: 0;
}

.segmented-control label:has(input:checked) {
  border-color: var(--accent);
  color: white;
  background: var(--accent);
}

.counter-strip {
  display: grid;
  min-width: 96px;
  justify-items: end;
}

.counter-strip span {
  font-size: 1.5rem;
  font-weight: 800;
}

.sign-tabs,
.rotation-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.rotation-toolbar .rotation-tabs {
  margin-top: 0;
}

.sign-tabs button,
.rotation-tabs button {
  min-height: 40px;
}

.sign-tabs button.active,
.rotation-tabs button.active {
  color: white;
  border-color: var(--accent);
  background: var(--accent);
}

.sign-tabs .tab-add-button,
.rotation-tabs .tab-add-button,
.sign-tabs .tab-delete-button,
.rotation-tabs .tab-delete-button {
  min-height: 42px;
}

.sign-tabs .tab-add-button:hover,
.rotation-tabs .tab-add-button:hover {
  border-color: var(--accent);
}

.sign-settings {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(260px, 1.4fr) minmax(90px, 120px);
  gap: 0.75rem;
  align-items: end;
  margin-top: 0.85rem;
}

.sign-settings label {
  display: grid;
  gap: 0.35rem;
}

.matrix-preview {
  margin-top: 1rem;
}

.matrix-header {
  display: block;
  margin-bottom: 0.5rem;
}

.matrix-header strong,
.matrix-header span {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 400;
}

.matrix-header span:empty {
  display: none;
}

.matrix-surface {
  position: relative;
  min-height: 210px;
  overflow: hidden;
  border: 10px solid #283038;
  border-radius: 8px;
  background: var(--sign-bg);
  box-shadow: inset 0 0 0 1px #3c4440;
}

.matrix-canvas {
  display: block;
  height: auto;
  max-width: 100%;
  background: var(--sign-bg);
}

.rotation-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 0;
  width: 100%;
  justify-self: end;
  align-items: end;
}

.rotation-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  align-items: end;
  gap: 0.85rem;
  margin-top: 0.65rem;
}

.rotation-form label:first-child {
  grid-column: 3;
}

.rotation-form label:nth-child(2) {
  grid-column: 4;
}

.rotation-form label,
.box-form label {
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.box-workspace {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1rem;
  min-width: 0;
  align-items: start;
}

.box-list-panel {
  display: grid;
  align-content: start;
  gap: 0.35rem;
}

.box-list-actions {
  display: flex;
  justify-content: flex-start;
  gap: 0.4rem;
  margin-top: 0.1rem;
}

.box-list-actions .icon-button {
  width: 42px;
  height: 42px;
  min-height: 42px;
}

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

.box-list {
  display: grid;
  align-content: start;
  gap: 0.5rem;
}

.box-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.6rem;
  text-align: left;
}

.box-item.active {
  border-color: var(--accent);
  background: rgba(18, 163, 148, 0.18);
}

.box-item small {
  grid-column: 1 / -1;
}

.box-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  align-items: start;
  min-width: 0;
}

.box-form .wide {
  grid-column: 1;
}

.graphic-editor {
  --graphic-pixel-size: 14px;
  display: grid;
  gap: 0.75rem;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.85rem;
  overflow: hidden;
}

.graphic-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 0.75rem;
  align-items: end;
}

.graphic-upload {
  min-height: 44px;
}

.graphic-grid-scroll {
  max-width: 100%;
  overflow: auto;
}

.graphic-grid {
  display: grid;
  width: max-content;
  min-width: max-content;
  justify-self: start;
  gap: 1px;
  padding: 0.5rem;
  border: 8px solid #283038;
  border-radius: 6px;
  background: var(--sign-bg);
}

.graphic-pixel {
  width: var(--graphic-pixel-size);
  height: var(--graphic-pixel-size);
  min-width: var(--graphic-pixel-size);
  min-height: var(--graphic-pixel-size);
  border: 0;
  border-radius: 2px;
  padding: 0;
  background: rgba(255, 212, 90, 0.2);
}

.graphic-pixel.on {
  background: #ffffff;
}

.field-hint {
  display: none;
}

.bus-sign {
  display: grid;
  grid-template-columns: minmax(84px, 22%) 1fr;
  gap: 1rem;
  align-items: stretch;
  min-height: 190px;
  margin-top: 1rem;
  border: 10px solid #283038;
  border-radius: 8px;
  padding: 1rem;
  background: var(--sign-bg);
  box-shadow: inset 0 0 0 1px #3c4440;
}

.sign-route,
.sign-copy {
  display: grid;
  align-items: center;
}

.sign-route {
  justify-items: center;
  color: var(--sign-led);
  font-size: clamp(2.4rem, 7vw, 5.25rem);
  font-weight: 900;
  line-height: 1;
  text-align: center;
}

.sign-copy {
  gap: 0.35rem;
  min-width: 0;
  color: var(--sign-led);
  text-transform: uppercase;
}

.sign-destination,
.sign-via,
.sign-note {
  overflow-wrap: anywhere;
}

.sign-destination {
  font-size: clamp(1.7rem, 4.7vw, 4rem);
  font-weight: 900;
  line-height: 1.02;
}

.sign-via {
  color: #ffe9a3;
  font-size: clamp(1rem, 2.1vw, 1.55rem);
  font-weight: 700;
}

.sign-note {
  color: #f7f0c5;
  font-size: clamp(0.92rem, 1.7vw, 1.2rem);
}

.validation-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
  margin-top: 1rem;
}

.validation-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.7rem;
  background: var(--surface-2);
}

.validation-card strong {
  display: block;
  margin-bottom: 0.2rem;
}

.validation-card.warning {
  border-color: #dfa000;
  background: rgba(223, 160, 0, 0.14);
}

textarea {
  min-height: 190px;
  margin-top: 1rem;
  resize: vertical;
  font-family: Consolas, "Courier New", monospace;
  line-height: 1.45;
}

@media (min-width: 760px) {
  .box-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .box-form > label:nth-child(1),
  .box-form > label:nth-child(2) {
    grid-column: 1 / -1;
  }

  .box-form .wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1280px) {
  .box-form {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .box-form > label:nth-child(1),
  .box-form > label:nth-child(2) {
    grid-column: span 2;
  }

  .box-form .wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1851px) {
  .application-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .application-actions {
    grid-column: 1 / -1;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }
}

@media (max-width: 1500px) {
  .sign-settings {
    grid-template-columns: minmax(0, 1fr) minmax(90px, 130px);
  }

  .sign-settings label:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1280px) {
  .workspace {
    grid-template-columns: 1fr;
    grid-auto-rows: min-content;
  }

  .destination-panel,
  .preview-panel,
  .sign-editor-panel {
    grid-column: 1;
  }

  .sign-settings {
    grid-template-columns: minmax(160px, 1fr) minmax(260px, 1.4fr) minmax(90px, 120px);
  }

  .sign-settings label:first-child {
    grid-column: auto;
  }

  .box-workspace {
    grid-template-columns: 1fr;
  }

  .box-list-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .box-list-panel > .field-label,
  .box-list {
    grid-column: 1 / -1;
  }

  .box-list-actions {
    justify-content: flex-end;
  }
}

@media (max-width: 760px) {
  .application-controls,
  .sign-settings {
    grid-template-columns: 1fr;
  }

  .application-actions {
    grid-column: auto;
    overflow-x: auto;
  }
}

@media (max-width: 919px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

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

  .sidebar {
    position: fixed;
    z-index: 70;
    inset: 0 auto 0 0;
    width: min(360px, calc(100vw - 1rem));
    height: 100vh;
    overflow: hidden;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    box-shadow: var(--shadow);
  }

  .app-shell.sidebar-collapsed .sidebar {
    width: 68px;
    height: 100vh;
    overflow: hidden;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    box-shadow: none;
  }

  .app-shell.sidebar-collapsed .workspace {
    padding-left: calc(68px + 0.8rem);
  }

  .app-shell:not(.sidebar-collapsed)::after {
    position: fixed;
    z-index: 60;
    inset: 0;
    content: "";
    background: rgba(0, 0, 0, 0.36);
  }

  .destination-list {
    max-height: 320px;
  }

  .destination-panel,
  .preview-panel {
    grid-column: 1;
  }

  .destination-form.compact-destination-form {
    grid-template-columns: minmax(130px, 220px);
  }

  .destination-actions {
    grid-column: auto;
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .rotation-form label:first-child,
  .rotation-form label:nth-child(2) {
    grid-column: auto;
  }

  .workspace,
  .sidebar {
    padding: 0.8rem;
  }

  .panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .panel-actions,
  .application-controls,
  .preview-toolbar,
  .sign-settings,
  .destination-form,
  .rotation-toolbar,
  .rotation-form,
  .box-workspace,
  .box-form,
  .graphic-controls,
  .segmented-control,
  .validation-grid {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .destination-form label:nth-child(3),
  .destination-form label:nth-child(4),
  fieldset {
    grid-column: auto;
  }

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

  .destination-actions {
    grid-column: auto;
  }

  .bus-sign {
    grid-template-columns: 1fr;
    min-height: 260px;
  }

  .graphic-editor {
    --graphic-pixel-size: 10px;
  }
}


.destination-panel .customer-details {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: start;
  margin-top: 0.75rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.destination-panel .customer-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.65rem;
  margin: 0;
}

.destination-panel .customer-summary dt {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  color: var(--muted);
  font-size: 0.92rem;
  white-space: normal;
}

.destination-panel .customer-summary dd,
.destination-panel .customer-summary div:first-child dd,
.destination-panel .customer-summary div:nth-child(2) dd,
.destination-panel .customer-summary div:nth-child(3) dd {
  margin: 0.22rem 0 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
}

.rotation-tab-panel {
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.preview-panel > .field-label {
  display: block;
  margin-top: 0.85rem;
}


@media (max-width: 620px) {
  .destination-panel .customer-details,
  .destination-panel .customer-summary {
    grid-template-columns: 1fr;
  }
}

.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.72);
  pointer-events: none;
}

.tutorial-highlight {
  position: relative;
  z-index: 1002 !important;
  box-shadow: 0 0 0 3px var(--accent), 0 0 0 9px rgba(20, 184, 166, 0.22);
}

.tutorial-panel {
  position: fixed;
  z-index: 1003;
  width: min(340px, calc(100vw - 2rem));
  padding: 1rem;
  border: 1px solid rgba(45, 212, 191, 0.55);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.42);
  color: var(--ink);
}

.tutorial-close-button {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 0;
  cursor: pointer;
}

.tutorial-close-button:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.tutorial-panel h2 {
  margin: 0 0 0.45rem;
  padding-right: 2.2rem;
  font-size: 1rem;
}

.tutorial-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.tutorial-instruction {
  display: block;
  margin-top: 0.75rem;
  color: var(--accent);
}

.tutorial-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.tutorial-primary-button,
.tutorial-secondary-button {
  min-height: 2.35rem;
  padding: 0 0.9rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

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

.tutorial-secondary-button:hover,
.tutorial-primary-button:hover {
  border-color: var(--accent);
}