:root {
  --bg-top: #eef3ef;
  --bg-bottom: #dce6df;
  --surface: rgba(251, 248, 242, 0.94);
  --surface-muted: rgba(243, 238, 228, 0.9);
  --ink: #182127;
  --ink-soft: #46555f;
  --line: rgba(26, 39, 47, 0.12);
  --brand: #0f5c63;
  --brand-strong: #0a474d;
  --accent: #eb6f45;
  --preview-bg: linear-gradient(180deg, #f6f2ea 0%, #e9efe8 100%);
  --shadow-md: 0 14px 38px rgba(24, 33, 39, 0.08);
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(15, 92, 99, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(235, 111, 69, 0.16), transparent 28%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

button,
input,
select {
  font: inherit;
}

[hidden] {
  display: none !important;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(360px, 430px) minmax(0, 1fr);
  gap: 18px 22px;
  align-items: stretch;
  max-width: 1540px;
  margin: 0 auto;
  padding: 24px;
}

.app-card,
.settings-form,
.action-card,
.preview-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.app-card {
  min-height: 100%;
}

.app-card-upload,
.app-card-support {
  height: 100%;
}

.upload-card,
.support-card,
.settings-form,
.action-card,
.preview-card {
  padding: 18px;
}

.upload-card {
  display: grid;
  gap: 12px;
  min-height: 100%;
  align-content: start;
}

.upload-card__copy {
  display: grid;
  gap: 6px;
}

.upload-card__title,
.support-card__quote {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.upload-card__title {
  font-size: 1.05rem;
}

.upload-card__text,
.helper-text,
.route-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.45;
}

.route-meta {
  min-height: calc(1.45em * 2);
}

.support-card {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  justify-content: flex-start;
  gap: 14px;
  background:
    linear-gradient(135deg, rgba(15, 92, 99, 0.08), rgba(244, 191, 58, 0.12)),
    var(--surface);
}

.support-card__quote {
  font-size: 1.18rem;
}

.support-card__actions {
  display: flex;
  align-items: flex-end;
  align-self: stretch;
  flex-direction: column;
  gap: 14px;
}

.support-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffea57, #ffdd00);
  box-shadow: 0 8px 18px rgba(244, 191, 58, 0.28);
  color: #111111;
  font-family: "Marker Felt", "Bradley Hand", "Segoe Print", "Trebuchet MS", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.support-button:hover {
  background: linear-gradient(180deg, #fff07a, #ffe22b);
}

.support-button-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.support-card__qr {
  display: block;
  order: -1;
  width: 120px;
  height: 120px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.9);
}

.support-card__qr img {
  display: block;
  width: 100%;
  height: 100%;
}

.workspace-nav {
  display: none;
}

.workspace[hidden],
.workspace-nav[hidden] {
  display: none !important;
}

.workspace {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(360px, 430px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.workspace-pane {
  min-width: 0;
}

.workspace-pane--settings,
.workspace-pane--preview {
  display: grid;
  gap: 18px;
}

.settings-form {
  display: grid;
  gap: 0;
  min-width: 0;
  max-width: 100%;
  padding-bottom: 24px;
}

.settings-section,
.settings-subsection {
  display: grid;
  min-width: 0;
  max-width: 100%;
}

.settings-section {
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
  margin-bottom: 5px;
}

.settings-section__header,
.settings-subsection__header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.settings-section__trigger,
.settings-subsection__trigger {
  flex: 1 1 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 24px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--ink);
  text-align: left;
}

.settings-subsection__trigger {
  color: var(--brand);
  font-size: 0.92rem;
}

.settings-section__trigger:hover,
.settings-subsection__trigger:hover {
  background: transparent;
}

.settings-section__title,
.settings-subsection__title {
  font-weight: 700;
}

.settings-section__chevron::before,
.settings-subsection__chevron::before {
  content: "▸";
  display: inline-block;
  color: var(--brand);
  transition: transform 0.16s ease;
}

.settings-section.is-open .settings-section__chevron::before,
.settings-subsection.is-open .settings-subsection__chevron::before {
  transform: rotate(90deg);
}

.settings-section__body,
.settings-subsection__body {
  display: grid;
  gap: 14px;
}

.settings-section__body[hidden],
.settings-subsection__body[hidden] {
  display: none;
}

.settings-subsection {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 14px 14px;
  background: var(--surface-muted);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.settings-grid--compact {
  grid-template-columns: repeat(2, minmax(0, max-content));
}

.settings-cluster {
  display: grid;
  gap: 10px;
}

.settings-cluster--lined {
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.settings-cluster__title {
  margin: 0;
  color: var(--brand);
  font: 700 0.8rem/1.2 "IBM Plex Mono", "SFMono-Regular", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.settings-options {
  display: grid;
  gap: 10px;
}

.field {
  display: grid;
  gap: 6px;
  align-items: start;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 600;
}

.field--wide {
  width: 100%;
}

.field--fill {
  min-width: 0;
}

.field--plain {
  gap: 0;
}

.field--inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.field__label {
  display: block;
}

.field__control--unit {
  display: inline-flex;
  align-items: center;
}

.field__control--unit input {
  width: 128px;
  padding-right: 56px;
}

.field__unit {
  margin-left: -44px;
  margin-right: 2.35em;
  color: rgba(70, 85, 95, 0.72);
  font: 400 0.88rem/1 "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  pointer-events: none;
  white-space: nowrap;
}

input,
select,
button {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 13px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  min-height: 46px;
}

input,
select {
  width: fit-content;
}

input[type="text"],
input[type="time"],
.control-wide {
  width: min(100%, 240px);
}

input[type="number"] {
  width: 82px;
  padding-right: 13px;
}

input[type="color"] {
  width: 64px;
  padding: 6px;
}

.control-compact {
  width: 9ch;
}

.control-fill {
  width: 100% !important;
}

button {
  border-color: transparent;
  background: linear-gradient(180deg, var(--brand), var(--brand-strong));
  color: #fbfaf5;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 18px rgba(15, 92, 99, 0.18);
  cursor: pointer;
}

button:hover {
  background: linear-gradient(180deg, #146b73, #0c4d53);
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
}

.toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle__track {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 20px;
  border: 1px solid rgba(15, 92, 99, 0.16);
  border-radius: 999px;
  background: rgba(70, 85, 95, 0.16);
  box-shadow: inset 0 1px 2px rgba(24, 33, 39, 0.12);
  transition: background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.toggle__track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(24, 33, 39, 0.16);
  transition: left 0.16s ease;
}

.toggle input:checked+.toggle__track {
  border-color: transparent;
  background: linear-gradient(180deg, var(--brand), var(--brand-strong));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 4px 10px rgba(15, 92, 99, 0.18);
}

.toggle input:checked+.toggle__track::after {
  left: 16px;
}

.toggle input:focus-visible+.toggle__track,
input:focus-visible,
select:focus-visible,
button:focus-visible,
.support-card__qr:focus-visible,
.workspace-nav__tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.toggle--section {
  margin-left: auto;
}

.toggle--field {
  justify-self: start;
}

.toggle__label {
  font-size: 0.88rem;
  font-weight: 600;
}

.font-tools {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.font-tools button {
  width: auto;
}

.manual-checkpoint {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-items: end;
}

.manual-checkpoint .field--fill {
  grid-column: 1 / -1;
}

.manual-checkpoint input,
.manual-checkpoint select {
  width: 100%;
  min-width: 0;
}

.manual-distance-field {
  grid-column: span 2;
}

.manual-checkpoint button {
  grid-column: 1 / -1;
}

.checkpoint-list {
  display: grid;
  gap: 3px;
  min-width: 0;
  max-width: 100%;
}

.checkpoint-empty {
  padding: 8px 10px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  color: var(--muted);
  font-size: 0.88rem;
}

.cp-row {
  display: grid;
  grid-template-columns: auto 7ch minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-width: 0;
  max-width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.64);
}

.cp-row--manual {
  background: rgba(240, 253, 250, 0.82);
  border-color: rgba(15, 118, 110, 0.24);
}

.cp-row input:not(.cp-enabled) {
  min-width: 0;
  min-height: 34px;
  padding: 6px 8px;
  font-size: 0.92rem;
}

.cp-row .cp-code {
  width: 7ch;
}

.cp-row .cp-name {
  width: 100%;
}

.cp-row .km {
  color: var(--ink-soft);
  font: 700 0.78rem/1.2 "IBM Plex Mono", "SFMono-Regular", monospace;
}

.toggle--compact .toggle__track {
  width: 28px;
  height: 16px;
}

.toggle--compact .toggle__track::after {
  top: 1px;
  left: 1px;
  width: 12px;
  height: 12px;
}

.toggle--compact input:checked+.toggle__track::after {
  left: 13px;
}

.settings-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}

.app-version {
  color: var(--ink-soft);
  font: 700 0.76rem/1.2 "IBM Plex Mono", "SFMono-Regular", monospace;
}

.action-card,
.preview-card {
  display: grid;
  gap: 12px;
}

.action-card__layout {
  display: grid;
  gap: 12px;
}

.action-card__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 220px);
  gap: 12px;
}

.action-card__divider {
  margin: 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.preview-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(243, 238, 228, 0.94));
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink-soft);
  font-size: 0.86rem;
  white-space: nowrap;
}

.status-pill:empty {
  display: none;
}

.status-pill--overlay {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 1;
}

.preview-stage-shell {
  position: relative;
  display: grid;
  align-items: start;
  justify-items: center;
  min-height: 62vh;
  overflow: auto;
  border: 1px solid rgba(15, 92, 99, 0.08);
  border-radius: var(--radius-lg);
  padding: 18px;
  background: var(--preview-bg);
  contain: layout paint;
}

.preview-stage-shell::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px dashed rgba(15, 92, 99, 0.18);
  border-radius: calc(var(--radius-lg) - 6px);
  pointer-events: none;
}

.preview-stage {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: grid;
  align-items: start;
  justify-items: center;
}

.preview-scale {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 1;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 11px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink-soft);
  font: 700 0.78rem/1.1 "IBM Plex Mono", "SFMono-Regular", monospace;
  box-shadow: none;
  cursor: pointer;
}

.preview-scale:hover {
  background: rgba(255, 255, 255, 0.96);
}

.preview-stage-shell svg {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  display: block;
  object-fit: contain;
}

@media (max-width: 1019px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .workspace-pane--settings,
  .workspace-pane--preview {
    display: none;
  }

  .workspace-pane.is-active {
    display: grid;
  }

  .workspace-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 18px;
  }

  .workspace-pane--preview .preview-card {
    order: 1;
  }

  .workspace-pane--preview .action-card {
    order: 2;
  }

  .workspace-nav__tab {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.82);
    color: var(--ink-soft);
    font-weight: 700;
    box-shadow: none;
  }

  .workspace-nav__tab.is-active {
    background: linear-gradient(180deg, var(--brand), var(--brand-strong));
    color: #fbfaf5;
    border-color: transparent;
  }

  .preview-stage-shell {
    min-height: 56vh;
  }
}

@media (max-width: 760px) {
  .app-shell {
    display: block;
    padding: 16px;
  }

  .app-card-upload,
  .app-card-support,
  .workspace-nav {
    margin-bottom: 14px;
  }

  .upload-card,
  .support-card,
  .settings-form,
  .action-card,
  .preview-card {
    padding: 16px;
  }

  .settings-grid,
  .manual-checkpoint {
    grid-template-columns: 1fr;
  }

  .manual-distance-field {
    grid-column: auto;
  }

  .action-card__row {
    grid-template-columns: 1fr 1fr;
  }

  .cp-row {
    grid-template-columns: auto 86px minmax(0, 1fr);
  }

  .cp-row .km {
    grid-column: 2 / -1;
  }

  .status-pill--overlay {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-pill--overlay {
    position: absolute;
  }

  .support-card__qr {
    display: none;
  }
}