:root {
  --bg: #f3f6f4;
  --surface: #ffffff;
  --surface-soft: #eef3ef;
  --text: #152019;
  --muted: #5f6d63;
  --border: #d8e0da;
  --accent: #c94842;
  --accent-dark: #9f3a35;
  --teal: #1f665f;
  --blue: #245f98;
  --amber: #c47d22;
  --green: #35803d;
  --shadow: 0 14px 40px rgba(21, 32, 25, 0.06);
  --math-equation-size: 1.125rem;
  --control-height: 2.35rem;
}

* {
  box-sizing: border-box;
}

body {
  background: radial-gradient(circle at 18% 0%, rgba(35, 106, 98, 0.12), transparent 30rem), var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  margin: 0;
}

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

.app-shell {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  min-height: 100vh;
}

.nav-icon-sprite {
  height: 0;
  overflow: hidden;
  position: absolute;
  width: 0;
}

.sidebar {
  background: #eaf0ec;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0.95rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  align-items: center;
  display: flex;
  gap: 0.8rem;
}

.brand-mark {
  align-items: center;
  background: var(--teal);
  border-radius: 8px;
  color: #fff;
  display: flex;
  font-weight: 850;
  height: 2.6rem;
  justify-content: center;
  width: 2.6rem;
}

.brand-title {
  font-weight: 850;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.78rem;
}

.nav {
  display: grid;
  gap: 0.95rem;
}

.nav-group {
  display: grid;
  gap: 0.35rem;
}

.nav-heading {
  color: var(--muted);
  font-size: 0.69rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  padding: 0 0.75rem;
  text-transform: uppercase;
}

.nav-item {
  align-items: center;
  border-radius: 8px;
  color: var(--text);
  display: flex;
  font-size: 0.88rem;
  font-weight: 720;
  gap: 0.55rem;
  line-height: 1.25;
  padding: 0.58rem 0.75rem;
  text-decoration: none;
}

.nav-icon {
  color: var(--muted);
  flex-shrink: 0;
  height: 1.15rem;
  width: 1.15rem;
}

.nav-label {
  min-width: 0;
}

.nav-item:hover .nav-icon,
.nav-item.active .nav-icon {
  color: var(--teal);
}

.nav-item:hover,
.nav-item.active {
  background: #fff;
  box-shadow: 0 8px 20px rgba(23, 32, 25, 0.06);
}

.nav-item.planned {
  color: var(--muted);
}

.nav-item.planned .nav-icon {
  opacity: 0.65;
}

.side-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: auto;
  padding: 0.85rem;
}

.side-label,
.eyebrow {
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  margin: 0 0 0.25rem;
  text-transform: uppercase;
}

.side-panel p,
.subtitle,
.muted-card p {
  color: var(--muted);
  line-height: 1.45;
  margin: 0;
}

.workspace {
  padding: 0.75rem clamp(0.85rem, 2vw, 1.5rem) 1.5rem;
}

.workspace.mode-results {
  padding-top: 0.55rem;
}

.workspace.mode-toolbar-only .topbar {
  align-items: center;
  margin-bottom: 0.55rem;
  padding: 0.55rem 0.85rem;
}

.workspace.mode-toolbar-only .topbar-copy {
  display: none;
}

.workspace.mode-toolbar-only .top-actions {
  flex: 1;
  justify-content: flex-end;
}

.workspace.mode-workflow .workspace-nav {
  margin-bottom: 0.65rem;
}

.workspace.mode-workflow .view-context {
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  box-shadow: none;
  margin-bottom: 0;
}

.workspace.mode-workflow .workflow-strip {
  background: var(--surface-soft);
  border-radius: 0;
  margin-bottom: 0;
  padding: 0.45rem;
}

.workspace:not(.mode-workflow) .workflow-strip {
  display: none;
}

.workspace:not(.mode-workflow) .workspace-nav {
  background: transparent;
  border: 0;
  box-shadow: none;
}

.workspace:not(.mode-workflow) .workspace-nav .view-context {
  margin-bottom: 0.65rem;
}

.workspace.mode-workflow .view-context .subtitle {
  display: none;
}

.workspace.mode-results .view-context .subtitle {
  display: none;
}

.workspace.mode-results .view-context h2 {
  font-size: 1rem;
}

.topbar,
.card,
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.topbar {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  margin-bottom: 0.65rem;
  padding: 0.75rem 1rem;
}

.topbar-leading {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  min-width: 0;
}

.topbar-project {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  min-width: 0;
}

.topbar-project-label {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#topbar-project-name {
  font-size: 0.95rem;
  font-weight: 820;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.workspace-nav {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.topbar-copy h1 {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
}

.topbar-copy .subtitle {
  font-size: 0.88rem;
  max-width: 38rem;
}

.top-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.toolbar-group {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.toolbar-divider {
  align-self: stretch;
  background: var(--border);
  flex-shrink: 0;
  margin: 0.15rem 0;
  width: 1px;
}

.project-switcher {
  align-items: center;
  display: flex;
  gap: 0.45rem;
  min-width: 0;
}

.project-switcher span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
  white-space: nowrap;
}

.project-switcher select {
  background: #fff;
  border: 1px solid #cfd8d1;
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-weight: 760;
  min-height: var(--control-height);
  min-width: 10rem;
  padding: 0.4rem 0.65rem;
}

.context-pill.project-pill {
  background: rgba(31, 102, 95, 0.08);
  border-color: rgba(31, 102, 95, 0.22);
  color: var(--teal);
  font-weight: 850;
  max-width: 14rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.compact-control {
  min-height: var(--control-height);
  padding: 0 0.8rem;
}

.button {
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 800;
  min-height: var(--control-height);
  padding: 0 0.95rem;
}

h1,
h2 {
  letter-spacing: 0;
  margin: 0;
}

h1 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.04;
}

h2 {
  font-size: 1.1rem;
}

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

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

.layout-grid {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.view-panel:not(.active-view),
.result-view:not(.active-result-view) {
  display: none !important;
}

.view-context {
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-bottom: 0.65rem;
  padding: 0.65rem 0.85rem;
}

.view-context-main {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
}

.view-context-titles {
  display: grid;
  gap: 0.12rem;
}

.view-context h2 {
  font-size: 1.05rem;
}

.view-context .subtitle {
  font-size: 0.84rem;
  line-height: 1.35;
}

.context-pills {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: flex-end;
}

.context-pill {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 820;
  padding: 0.25rem 0.55rem;
}

.context-pill.done {
  background: rgba(61, 140, 69, 0.12);
  border-color: rgba(61, 140, 69, 0.24);
  color: var(--green);
}

.context-pill.stale {
  background: rgba(196, 125, 34, 0.12);
  border-color: rgba(196, 125, 34, 0.28);
  color: var(--amber);
}

.result-empty.active-view {
  display: grid;
  min-height: 18rem;
  place-items: center;
}

.calc-empty-card {
  max-width: 36rem;
  text-align: center;
}

.calc-empty-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: center;
  margin-top: 1rem;
}

.calc-stage-toolbar {
  display: none;
}

.calc-results {
  display: grid;
  gap: 0.65rem;
}

.result-dock {
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 28px rgba(21, 32, 25, 0.08);
  display: grid;
  gap: 0.4rem;
  padding: 0.5rem 0.65rem;
  position: sticky;
  top: 0.45rem;
  z-index: 20;
}

.result-dock-header {
  align-items: center;
  display: flex;
  gap: 0.65rem;
  justify-content: space-between;
}

.result-dock-header .dock-step {
  color: var(--teal);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  margin: 0;
  text-transform: uppercase;
}

.result-dock-header h2 {
  font-size: 0.95rem;
  margin: 0.1rem 0 0;
}

.result-dock-header .subtitle {
  display: none;
}

.result-dock-header-actions {
  align-items: center;
  display: flex;
  flex-shrink: 0;
  gap: 0.45rem;
}

.result-dock-explorer {
  min-width: 0;
}

.dock-main-row {
  align-items: end;
  display: grid;
  gap: 0.45rem 0.65rem;
  grid-template-columns: auto minmax(10rem, 1.4fr) minmax(7rem, 0.55fr) minmax(9rem, 0.65fr);
}

.dock-q-head {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-bottom: 0.15rem;
}

.dock-slider-grow {
  min-width: 0;
}

.dock-slider-grow input[type="range"] {
  width: 100%;
}

.dock-direct-q,
.dock-section {
  font-size: 0.72rem;
  gap: 0.22rem;
  margin: 0;
  min-width: 0;
}

.dock-direct-q input,
.dock-section select {
  min-height: 2rem;
  padding: 0.32rem 0.5rem;
}

.dock-direct-q .input-unit span {
  font-size: 0.68rem;
}

.q-direct-unit {
  grid-template-columns: minmax(0, 1fr) auto;
}

.q-direct-field {
  border: 1px solid #cfd8d1;
  border-radius: 8px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1.35rem;
  min-height: 2rem;
  overflow: hidden;
}

.q-direct-field input {
  border: 0;
  border-radius: 0;
  min-height: 0;
  padding: 0.32rem 0.45rem;
}

.q-direct-steppers {
  border-left: 1px solid #cfd8d1;
  display: flex;
  flex-direction: column;
}

.q-direct-step {
  background: #f4f7f5;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  flex: 1;
  font-size: 0.52rem;
  line-height: 1;
  min-height: 0;
  padding: 0;
  width: 100%;
}

.q-direct-step:hover {
  background: #e8efea;
  color: var(--text);
}

.q-direct-step:active {
  background: #dce6e0;
}

.q-direct-step + .q-direct-step {
  border-top: 1px solid #cfd8d1;
}

.dock-label {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 820;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.dock-q-value {
  background: linear-gradient(135deg, var(--teal), #2a857b);
  border-radius: 999px;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 850;
  min-width: 5.5rem;
  padding: 0.22rem 0.55rem;
  text-align: center;
  white-space: nowrap;
}

.dock-slider {
  gap: 0.55rem;
}

.dock-slider span {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 760;
  min-width: 3.2rem;
}

.dock-slider span:last-child {
  text-align: right;
}

.result-details {
  border-top: 1px solid #edf1ed;
  padding-top: 0.35rem;
}

.result-details summary {
  color: var(--muted);
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 820;
  list-style: none;
  user-select: none;
}

.result-details summary::-webkit-details-marker {
  display: none;
}

.result-details summary::after {
  content: "▾";
  float: right;
  font-size: 0.72rem;
}

.result-details[open] summary::after {
  content: "▴";
}

.result-details-body {
  display: grid;
  gap: 0.55rem;
  padding-top: 0.55rem;
}

.status-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.status-strip .status-card {
  background: #f8faf8;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
}

.status-strip .status-card span {
  display: inline;
  font-size: 0.65rem;
  margin-right: 0.25rem;
}

.status-strip .status-card strong {
  display: inline;
  font-size: 0.72rem;
  margin-top: 0;
}

.compact-details {
  gap: 0.45rem;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  margin-bottom: 0;
}

.compact-details .detail-panel {
  padding: 0.65rem;
}

.compact-details .detail-panel h3 {
  font-size: 0.82rem;
  margin: 0 0 0.35rem;
}

.compact-details .detail-row {
  padding: 0.28rem 0;
}

.compact-details .detail-row span,
.compact-details .detail-row strong {
  font-size: 0.72rem;
}

.calc-figures {
  display: grid;
  gap: 0.65rem;
  min-width: 0;
}

.compact-chart {
  padding: 0.65rem 0.75rem 0.75rem;
}

.chart-title {
  font-size: 0.88rem;
  font-weight: 820;
  margin: 0 0 0.55rem;
}

.chart-card-header {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  margin-bottom: 0.55rem;
}

.chart-card-header .chart-title {
  margin: 0;
}

#bedload-equal-axis.is-active {
  background: #e3efeb;
  border-color: #9fc5bc;
  color: var(--teal);
}

.compact-header {
  margin-bottom: 0.55rem;
}

.compact-button {
  min-height: 2rem;
  padding: 0 0.75rem;
}

.compact-table-card {
  padding: 0.75rem;
}

.calc-reporting {
  margin-top: 0;
}

.project-workspace-grid {
  grid-template-columns: minmax(20rem, 0.95fr) minmax(24rem, 1.25fr) minmax(18rem, 0.8fr);
}

.two-col {
  grid-template-columns: minmax(0, 1.25fr) minmax(22rem, 0.75fr);
}

.friction-grid {
  align-items: stretch;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  max-width: 44rem;
}

.q-range-card,
.friction-method-card {
  display: flex;
  flex-direction: column;
}

.q-range-card .q-range-fields {
  flex: 1;
}

.q-range-fields {
  gap: 0.55rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.friction-method-fields {
  gap: 0.55rem;
  max-width: 22rem;
}

.card-title-with-info {
  align-items: center;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.equation-info-slot {
  display: inline-flex;
}

.equation-info {
  display: inline-flex;
  position: relative;
  vertical-align: middle;
}

.equation-info-btn {
  align-items: center;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--teal);
  cursor: help;
  display: inline-flex;
  flex-shrink: 0;
  font-size: 0.68rem;
  font-weight: 850;
  height: 1.2rem;
  justify-content: center;
  line-height: 1;
  min-height: 0;
  padding: 0;
  width: 1.2rem;
}

.equation-info-btn:hover,
.equation-info-btn:focus-visible {
  background: #fff;
  border-color: rgba(31, 102, 95, 0.35);
  box-shadow: 0 0 0 2px rgba(31, 102, 95, 0.12);
  outline: none;
}

.equation-popover {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  left: 50%;
  max-width: min(36rem, calc(100vw - 2rem));
  min-width: 16rem;
  opacity: 0;
  padding: 0.65rem 0.75rem;
  pointer-events: none;
  position: absolute;
  top: calc(100% + 0.4rem);
  transform: translateX(-50%) translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
  visibility: hidden;
  z-index: 40;
}

.equation-popover-inner {
  font-size: var(--math-equation-size);
  overflow-x: auto;
}

.equation-info:hover .equation-popover,
.equation-info:focus-within .equation-popover {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  visibility: visible;
}

.equation-popover-inner strong {
  display: block;
  font-size: 0.78rem;
  margin-bottom: 0.35rem;
}

.equation-popover-inner .formula-equation {
  margin-top: 0.35rem;
}

.formula-row .equation-info {
  margin-left: 0.15rem;
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.section-workbench {
  grid-template-columns: minmax(18rem, 0.8fr) minmax(28rem, 1.4fr) minmax(18rem, 0.8fr);
}

.card,
.chart-card {
  padding: 0.85rem;
}

.card.compact {
  align-self: start;
}

.card-header,
.section-title {
  align-items: flex-start;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 0.9rem;
}

.badge {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.55rem;
}

.badge.done {
  background: rgba(61, 140, 69, 0.12);
  border-color: rgba(61, 140, 69, 0.24);
  color: var(--green);
}

.badge.planned {
  background: rgba(216, 80, 74, 0.1);
  border-color: rgba(216, 80, 74, 0.25);
  color: var(--accent-dark);
}

.workflow-strip {
  display: grid;
  gap: 0.35rem;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0 0 0.65rem;
}

.workflow-step {
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  display: grid;
  gap: 0.08rem;
  grid-template-columns: auto minmax(0, 1fr);
  padding: 0.5rem 0.65rem;
  text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.workflow-step span {
  align-items: center;
  background: var(--surface-soft);
  border-radius: 999px;
  color: var(--teal);
  display: flex;
  font-weight: 850;
  grid-row: span 2;
  height: 1.55rem;
  justify-content: center;
  width: 1.55rem;
}

.workflow-step strong {
  display: block;
  font-size: 0.78rem;
}

.workflow-step em {
  color: var(--muted);
  font-size: 0.68rem;
  font-style: normal;
  font-weight: 720;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.workflow-step:hover,
.workflow-step.active {
  background: #fafcfb;
  border-color: rgba(31, 102, 95, 0.35);
  box-shadow: var(--shadow);
}

.workflow-step.active {
  border-color: rgba(31, 102, 95, 0.45);
  box-shadow: inset 3px 0 0 var(--teal);
}

.workflow-step.done em {
  color: var(--green);
}

.workflow-step.locked {
  opacity: 0.72;
}

.form-grid {
  display: grid;
  gap: 0.8rem;
}

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

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

label {
  color: var(--muted);
  display: grid;
  font-size: 0.82rem;
  font-weight: 760;
  gap: 0.3rem;
}

input,
select,
textarea {
  background: #fff;
  border: 1px solid #cfd8d1;
  border-radius: 8px;
  color: var(--text);
  min-height: var(--control-height);
  padding: 0.4rem 0.62rem;
  width: 100%;
}

textarea {
  min-height: 5.3rem;
  resize: vertical;
}

.input-unit {
  align-items: center;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.35rem;
}

.input-unit span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.status-grid,
.kpi-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  margin-bottom: 1rem;
}

.status-card,
.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem;
}

.status-card span,
.kpi-card span {
  color: var(--muted);
  display: block;
  font-size: 0.75rem;
  font-weight: 790;
}

.status-card strong,
.kpi-card strong {
  display: block;
  font-size: 1.35rem;
  line-height: 1.1;
  margin-top: 0.25rem;
}

.explorer-card {
  background: linear-gradient(135deg, #ffffff 0%, #f4f8f5 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
  padding: 1rem;
}

.explorer-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.explorer-header output {
  background: var(--text);
  border-radius: 8px;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 850;
  min-width: 8.5rem;
  padding: 0.55rem 0.8rem;
  text-align: center;
}

.slider-row {
  align-items: center;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: auto minmax(0, 1fr) auto;
}

.direct-q-control {
  margin-top: 0.75rem;
  max-width: 15rem;
}

.result-section-control {
  margin-top: 0.85rem;
}

.slider-row span,
.slider-hint,
.table-caption {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 760;
}

.slider-hint {
  margin: 0.55rem 0 0;
}

input[type="range"] {
  accent-color: var(--accent);
  cursor: pointer;
  min-height: 1.8rem;
  padding: 0;
}

.cross-section-list {
  display: grid;
  gap: 0.55rem;
}

.project-list {
  display: grid;
  gap: 0.55rem;
}

.project-row,
.cross-section-row {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  display: grid;
  gap: 0.55rem;
  padding: 0.75rem;
  text-align: left;
}

.project-row {
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
}

.project-row:hover,
.project-row.active,
.cross-section-row:hover,
.cross-section-row.active {
  border-color: rgba(35, 106, 98, 0.45);
  box-shadow: 0 10px 24px rgba(23, 32, 25, 0.07);
}

.project-row.active,
.cross-section-row.active {
  background: #f4faf6;
}

.project-row-main strong,
.section-row-main strong {
  display: block;
  font-size: 0.95rem;
}

.project-row-main span,
.project-row-meta,
.section-row-main span,
.section-row-values span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.project-row-meta {
  align-items: center;
  display: flex;
  gap: 0.45rem;
}

.section-row-values {
  display: grid;
  gap: 0.35rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.section-actions {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 0.85rem;
}

.project-actions {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.85rem;
}

.button.danger {
  color: var(--accent-dark);
}

.detail-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  margin-bottom: 1rem;
}

.detail-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.95rem;
}

.detail-panel h3 {
  font-size: 0.98rem;
  margin: 0 0 0.6rem;
}

.detail-row {
  align-items: baseline;
  border-top: 1px solid #edf0ed;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.45rem 0;
}

.detail-row:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.detail-row span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 720;
}

.detail-row strong {
  font-size: 0.88rem;
  text-align: right;
  white-space: nowrap;
}

.module-list {
  display: grid;
  gap: 0.55rem;
}

.formula-list {
  display: grid;
  gap: 0.45rem;
  overflow: visible;
}

.module-row,
.formula-row {
  align-items: center;
  border-top: 1px solid #edf0ed;
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  padding-top: 0.55rem;
}

.module-row:first-child,
.formula-row:first-child {
  border-top: 0;
  padding-top: 0;
}

.module-row strong,
.formula-row strong {
  display: block;
}

.module-row span,
.formula-row span {
  color: var(--muted);
  font-size: 0.78rem;
}

.formula-row {
  align-items: start;
  display: grid;
  gap: 0.55rem;
  grid-template-columns: auto minmax(0, 1fr) auto;
  padding: 0.55rem 0 0;
}

.formula-row:first-child {
  padding-top: 0;
}

.formula-copy {
  min-width: 0;
}

.formula-copy strong {
  align-items: center;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}

.formula-equation {
  background: #f7faf7;
  border: 1px solid #e1e8e1;
  border-radius: 8px;
  color: #213026;
  font-size: var(--math-equation-size);
  line-height: 1.5;
  margin-top: 0.55rem;
  overflow-x: auto;
  padding: 0.55rem 0.65rem;
}

.formula-equation.math-display {
  text-align: center;
}

.formula-equation mjx-container[jax="SVG"],
.equation-popover-inner mjx-container[jax="SVG"] {
  display: block !important;
  font-size: 1em;
  margin: 0.15rem 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.formula-equation mjx-container[jax="SVG"] svg,
.equation-popover-inner mjx-container[jax="SVG"] svg {
  display: inline-block;
  height: auto;
  max-width: none;
  vertical-align: middle;
}

.formula-equations-preview {
  border-top: 1px solid #e1e8e1;
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
  padding-top: 1rem;
}

.formula-preview-header h3 {
  font-size: 1rem;
  margin: 0.15rem 0 0;
}

.formula-preview-card {
  background: #f7faf7;
  border: 1px solid #e1e8e1;
  border-radius: 10px;
  padding: 0.75rem 0.85rem;
}

.formula-preview-title {
  display: grid;
  gap: 0.15rem;
  margin-bottom: 0.45rem;
}

.formula-preview-title span {
  color: var(--muted);
  font-size: 0.85rem;
}

.formula-preview-empty {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.method-equation {
  margin-top: 0.85rem;
}

.method-equation strong {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.45rem;
}

.method-equation .formula-equation,
.method-equation div:not(.formula-equation) {
  overflow-x: auto;
  text-align: center;
}

label.is-disabled {
  opacity: 0.55;
}

label.is-disabled input {
  background: #f2f5f2;
  cursor: not-allowed;
}

.formula-row input {
  min-height: auto;
  width: auto;
}

.results.hidden,
.toast.hidden,
.login-overlay.hidden,
.hidden {
  display: none !important;
}

.login-overlay {
  align-items: center;
  background: radial-gradient(circle at 18% 0%, rgba(35, 106, 98, 0.12), transparent 30rem), var(--bg);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: 1.5rem;
  position: fixed;
  z-index: 1000;
}

.login-card {
  max-width: 420px;
  width: 100%;
}

.compact-brand {
  margin-bottom: 1rem;
}

.login-hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 1rem 0 0;
}

.login-error {
  background: #fff1f0;
  border: 1px solid #f0c8c4;
  border-radius: 8px;
  color: #9b2c24;
  font-size: 0.9rem;
  margin: 0;
  padding: 0.55rem 0.65rem;
}

.login-error.hidden {
  display: none;
}

.toolbar-auth .auth-user {
  color: var(--muted);
  font-size: 0.82rem;
  max-width: 8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-shell.is-locked {
  display: none;
}

.section-title {
  margin: 0 0 0.85rem;
}

.chart-card {
  margin-bottom: 0;
}

.chart-stack {
  display: grid;
  gap: 0.55rem;
}

.chart-grid {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.hydraulic-charts-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.plot {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 15rem;
  overflow: hidden;
}

.hydraulic-plot {
  min-height: 24rem;
}

.transport-charts-stack {
  display: grid;
  gap: 0.75rem;
}

.transport-chart-grid .plot {
  min-height: 24rem;
}

.custom-charts-intro {
  display: grid;
  gap: 0.25rem;
}

.custom-charts-intro-header {
  align-items: flex-start;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  justify-content: space-between;
}

.custom-charts-intro-header > div {
  flex: 1 1 14rem;
  min-width: 0;
}

.custom-charts-intro .eyebrow {
  margin: 0;
}

.custom-charts-copy {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
  margin: 0;
  max-width: 52rem;
}

.custom-chart-hint {
  background: #fff8e8;
  border: 1px solid #ead7a8;
  border-radius: 8px;
  color: #6a4f12;
  font-size: 0.78rem;
  margin: 0;
  padding: 0.45rem 0.6rem;
}

.custom-chart-hint.hidden {
  display: none;
}

.custom-chart-grid {
  align-items: stretch;
}

.custom-chart-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  gap: 0.45rem;
  min-width: 0;
  padding: 0.55rem 0.55rem 0.65rem;
}

.custom-chart-toolbar {
  display: grid;
  gap: 0.45rem;
}

.custom-chart-toolbar h4 {
  font-size: 0.82rem;
  font-weight: 820;
  margin: 0;
}

.custom-chart-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.custom-chart-fields {
  display: grid;
  gap: 0.35rem;
  grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr));
}

.custom-chart-fields label {
  display: grid;
  font-size: 0.72rem;
  font-weight: 760;
  gap: 0.18rem;
}

.custom-chart-fields select {
  font-size: 0.78rem;
  min-height: 2rem;
  padding: 0.28rem 0.4rem;
}

.custom-chart-panel .plot.custom-plot {
  min-height: 22rem;
}

.muted-card {
  background: #f7f9f7;
  box-shadow: none;
}

.table-wrap {
  max-height: 20rem;
  overflow: auto;
}

.table-caption {
  margin: 0 0 0.55rem;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid #edf0ed;
  padding: 0.55rem 0.65rem;
  text-align: right;
}

th:first-child,
td:first-child {
  text-align: left;
}

th {
  color: var(--muted);
  font-size: 0.76rem;
  position: sticky;
  top: 0;
  background: #fff;
}

tr.selected-row td {
  background: rgba(216, 80, 74, 0.08);
  color: var(--accent-dark);
  font-weight: 850;
}

.toast {
  background: var(--text);
  border-radius: 8px;
  bottom: 1rem;
  color: #fff;
  font-weight: 760;
  left: 50%;
  padding: 0.75rem 1rem;
  position: fixed;
  transform: translateX(-50%);
  z-index: 1000;
}

@media (min-width: 1101px) {
  .hydraulic-plot,
  .transport-chart-grid .plot {
    min-height: 26rem;
  }
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

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

  .nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .two-col,
  .three-col,
  .project-workspace-grid,
  .section-workbench,
  .friction-grid,
  .chart-grid,
  .workflow-strip {
    grid-template-columns: 1fr;
  }

  .detail-grid,
  .compact-details {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dock-main-row {
    grid-template-columns: 1fr;
  }

  .hydraulic-plot,
  .transport-chart-grid .plot,
  .custom-chart-panel .plot.custom-plot {
    min-height: 18rem;
  }

  .custom-chart-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .topbar,
  .card-header,
  .section-title,
  .view-context,
  .workspace-nav {
    display: grid;
  }

  .context-pills {
    justify-content: flex-start;
  }

  .form-grid.two,
  .q-range-fields,
  .nav,
  .section-actions,
  .project-actions {
    grid-template-columns: 1fr;
  }

  .top-actions {
    align-items: stretch;
    display: grid;
    gap: 0.55rem;
    white-space: normal;
  }

  .toolbar-divider {
    display: none;
  }

  .project-switcher {
    min-width: 0;
    width: 100%;
  }

  .project-switcher select {
    flex: 1;
    min-width: 0;
  }

  .status-grid,
  .kpi-grid,
  .detail-grid,
  .compact-details {
    grid-template-columns: 1fr;
  }

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

  .dock-slider {
    grid-template-columns: 1fr;
  }
}