:root {
  --bg: #e8f0fa;
  --panel: rgba(245, 249, 255, 0.88);
  --panel-strong: rgba(248, 251, 255, 0.97);
  --ink: #14263a;
  --muted: #4d6478;
  --accent: #3b82f6;
  --accent-dark: #1d4ed8;
  --line: rgba(20, 38, 58, 0.11);
  --shadow: 0 10px 28px rgba(20, 50, 100, 0.09);
  --radius-lg: 20px;
  --radius-md: 12px;
}

* { box-sizing: border-box; }

html { font-size: 13px; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Avenir Next", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(circle at top left,  rgba(59, 130, 246, 0.13), transparent 34%),
    radial-gradient(circle at 85% 10%,   rgba(30,  80, 160, 0.08), transparent 28%),
    linear-gradient(180deg, #eef4ff 0%, #e2ecfa 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 38, 58, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 38, 58, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.4), transparent);
  pointer-events: none;
}

/* ── Shell ─────────────────────────────────────────────────────── */
.page-shell {
  position: relative;
  width: min(1280px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.2rem 0 2.5rem;
}

.site-header {
  position: sticky;
  top: 0.75rem;
  z-index: 24;
  display: grid;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
}

.site-titlebar {
  display: flex;
  justify-content: center;
  padding: 0.45rem 0.9rem;
  background: rgba(248, 251, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  box-shadow: 0 8px 22px rgba(20, 50, 100, 0.08);
  backdrop-filter: blur(16px);
}

.site-title {
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-decoration: none;
  text-transform: uppercase;
}

.tool-ribbon {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.45rem;
  background: rgba(248, 251, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  box-shadow: 0 8px 22px rgba(20, 50, 100, 0.08);
  backdrop-filter: blur(16px);
}

.tool-ribbon__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 120ms, color 120ms, transform 120ms;
}

.tool-ribbon__link:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.62);
  transform: translateY(-1px);
}

.tool-ribbon__link.is-active {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.14), rgba(255, 255, 255, 0.96));
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(20, 50, 100, 0.12);
}

.tool-ribbon__select-wrap {
  position: relative;
  display: none;
  flex: 0 0 auto;
}

.tool-ribbon__select {
  appearance: none;
  min-height: 2.35rem;
  padding: 0.45rem 2.1rem 0.45rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.tool-ribbon__select:focus {
  outline: none;
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.tool-ribbon__select-wrap::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0.9rem;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
}

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  padding: 0.25rem 0 0.75rem;
  animation: rise-in 0.5s ease both;
}

.eyebrow {
  margin: 0 0 0.3rem;
  color: var(--accent-dark);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  line-height: 1;
  white-space: nowrap;
}

h2 { font-size: 1rem; }
h3 { font-size: 0.85rem; }

.hero-copy {
  max-width: 55rem;
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
}

/* ── Tabs ──────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0.75rem 0 0.65rem;
  padding: 0.25rem;
  background: rgba(20, 38, 58, 0.07);
  border-radius: var(--radius-md);
  width: fit-content;
}

.tab-btn {
  appearance: none;
  border: 0;
  border-radius: calc(var(--radius-md) - 2px);
  padding: 0.4rem 1rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  background: transparent;
  color: var(--muted);
  transition: background 120ms, color 120ms;
}

.tab-btn:hover { color: var(--ink); background: rgba(255,255,255,0.45); }

.tab-btn.is-active {
  background: var(--panel-strong);
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(20, 50, 100, 0.12);
}

.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* ── Layout ────────────────────────────────────────────────────── */
.layout {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.95fr);
}

.panel {
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.inputs-panel,
.results-panel,
.notes-panel,
.grid-panel {
  padding: 0.95rem;
  animation: rise-in 0.6s ease both;
}

.results-panel { animation-delay: 0.06s; }
.notes-panel   { margin-top: 0.9rem; animation-delay: 0.12s; }
.grid-panel    { animation-delay: 0.06s; }

.panel-heading { margin-bottom: 0.75rem; }

.panel-heading p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

/* ── Form ──────────────────────────────────────────────────────── */
fieldset { margin: 0; padding: 0; border: 0; }

.duct-type {
  display: inline-flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.duct-type legend {
  width: 100%;
  margin-bottom: 0.35rem;
  font-weight: 700;
  font-size: 0.78rem;
}

.type-option { position: relative; cursor: pointer; }

.type-option input {
  position: absolute;
  opacity: 0;
  inset: 0;
}

.type-option span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 5.5rem;
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.55);
  font-weight: 700;
  font-size: 0.82rem;
  transition: transform 120ms, background 120ms, border-color 120ms;
}

.type-option input:checked + span {
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(59, 130, 246, 0.13);
  transform: translateY(-1px);
}

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

.input-group { display: grid; gap: 0.25rem; }

.input-group label {
  font-weight: 700;
  font-size: 0.78rem;
}

.field {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 0.45rem;
  padding: 0.12rem 0.28rem 0.12rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel-strong);
}

.field:focus-within {
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.field input {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  padding: 0.48rem 0;
}

.field input:focus { outline: none; }

.field select {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  padding: 0.48rem 0;
  appearance: none;
}

.field select:focus { outline: none; }

.field--select {
  position: relative;
}

.field--select::after {
  content: "";
  width: 0.6rem;
  height: 0.6rem;
  margin-right: 0.2rem;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  flex: 0 0 auto;
  pointer-events: none;
}

.field--readonly {
  background: rgba(226, 236, 250, 0.9);
}

.field--readonly input {
  color: var(--ink);
  font-weight: 700;
}

.field--disabled {
  background: #e6e8ee;
  border-color: #c7ceda;
  box-shadow: none;
}

.field--disabled:focus-within {
  border-color: #c7ceda;
  box-shadow: none;
}

.field--disabled input {
  color: #6b7280;
  cursor: not-allowed;
  opacity: 1;
  -webkit-text-fill-color: #6b7280;
}

.field--disabled span {
  color: #8a94a6;
}

.input-group--disabled label {
  color: #7b8394;
}

.field span {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.actions {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms, background 120ms;
}

.button:hover { transform: translateY(-1px); }

.button-secondary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
}

.button-primary {
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

.button-primary:hover { background: var(--accent-dark); }

.button-ghost {
  color: var(--ink);
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
}

/* ── Status banner ─────────────────────────────────────────────── */
.status-banner {
  padding: 0.55rem 0.8rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.6);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.status-banner.is-ready   { color: var(--ink);    background: rgba(59, 130, 246, 0.09); }
.status-banner.is-warning { color: #7c3300;        background: rgba(251, 146, 60, 0.14); }
.status-banner.is-error   { color: #7f1d1d;        background: rgba(239, 68,  68, 0.13); }

/* ── Result cards ──────────────────────────────────────────────── */
.result-grid {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.65rem;
}

.result-card {
  display: grid;
  gap: 0.18rem;
  padding: 0.65rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.5);
}

.accent-card {
  background:
    linear-gradient(145deg, rgba(59, 130, 246, 0.12), rgba(255,255,255,0.65)),
    rgba(255,255,255,0.6);
}

.result-label,
.result-unit { color: var(--muted); font-size: 0.76rem; }

.result-card strong {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  line-height: 1;
}

/* ── Details list ──────────────────────────────────────────────── */
.details-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0.7rem 0 0;
}

.details-list div {
  padding-top: 0.55rem;
  border-top: 1px solid var(--line);
}

.details-list dt { color: var(--muted); font-size: 0.76rem; }

.details-list dd {
  margin: 0.18rem 0 0;
  font-weight: 700;
  font-size: 0.88rem;
}

/* ── Notes panel ───────────────────────────────────────────────── */
.notes-grid {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.notes-grid article {
  padding: 0.7rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.45);
  border: 1px solid rgba(255,255,255,0.45);
}

.notes-grid p {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

code { font-family: "SFMono-Regular", "Consolas", monospace; font-size: 0.95em; }

/* ── Ko-fi bar ─────────────────────────────────────────────────── */
.support-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(59, 130, 246, 0.07);
  border: 1px solid rgba(59, 130, 246, 0.18);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.9rem;
  margin-top: 0.9rem;
}

.support-bar.is-disabled {
  display: none;
}

.support-bar__text {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}

.kofi-button {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--accent);
  color: #fff;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  white-space: nowrap;
  transition: background 0.15s, transform 0.12s;
}

.kofi-button:hover { background: var(--accent-dark); transform: translateY(-1px); }

/* ── Ductalator grid ───────────────────────────────────────────── */
.grid-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.grid-result-container { margin-top: 0.75rem; }

.grid-export-bar {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

/* ── Weather data ──────────────────────────────────────────────── */
.weather-page {
  display: grid;
  gap: 0.9rem;
  animation: rise-in 0.45s ease both;
}

.weather-station-panel,
.weather-form-panel,
.weather-output-panel,
.weather-reference-panel,
.weather-progress-panel {
  padding: 0.95rem;
}

.weather-station-grid {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.weather-station-grid__select {
  min-width: 0;
}

.weather-workflow-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.12fr) minmax(18rem, 0.88fr);
  align-items: start;
}

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

.weather-notes-grid {
  margin-top: 0.8rem;
}

.weather-output-grid,
.weather-details-list {
  margin-top: 0;
}

.weather-details-list dd {
  margin-top: 0.28rem;
  font-weight: 400;
}

.weather-details-list .field {
  padding-left: 0.55rem;
}

.weather-reference-scroll {
  margin-top: 0.2rem;
}

.weather-progress-track {
  position: relative;
  height: 0.9rem;
  margin-bottom: 0.7rem;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(20, 38, 58, 0.08);
}

.weather-progress-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  transition: width 180ms ease;
  transform: none;
}

.weather-progress-fill.is-busy {
  width: 34%;
  background:
    linear-gradient(
      120deg,
      rgba(29, 78, 216, 0.95) 0%,
      rgba(59, 130, 246, 0.95) 35%,
      rgba(147, 197, 253, 0.85) 50%,
      rgba(59, 130, 246, 0.95) 65%,
      rgba(29, 78, 216, 0.95) 100%
    );
  background-size: 220% 100%;
  animation:
    weather-progress-shift 1.2s linear infinite,
    weather-progress-slide 1.35s ease-in-out infinite;
}

.weather-action-row {
  align-items: center;
}

@keyframes weather-progress-shift {
  from { background-position: 0% 0; }
  to { background-position: 220% 0; }
}

@keyframes weather-progress-slide {
  from { transform: translateX(-120%); }
  to { transform: translateX(310%); }
}

/* ── Psych chart ────────────────────────────────────────────────── */
.psych-page {
  animation: rise-in 0.45s ease both;
}

.psych-intro {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.psych-top-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.78fr);
  align-items: start;
}

.psych-input-panel,
.psych-results-panel,
.psych-states-panel,
.psych-chart-panel {
  padding: 0.95rem;
}

.psych-form,
.psych-results-panel,
.psych-states-panel,
.psych-chart-panel {
  min-width: 0;
}

.psych-form-grid,
.psych-output-grid {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.psych-output-grid {
  grid-template-columns: 1fr;
}

.psych-results-panel .input-group {
  gap: 0.22rem;
  padding: 0.72rem 0.78rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.psych-results-panel .input-group label {
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
}

.psych-results-panel .field {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  align-items: baseline;
  gap: 0.35rem;
}

.psych-results-panel .field--readonly input {
  padding: 0;
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(1.08rem, 1.9vw, 1.42rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.psych-results-panel .field span {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
}

.panel-heading--split {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
}

.panel-heading--split .actions {
  margin-top: 0;
  justify-content: flex-end;
}

.input-group {
  min-width: 0;
}

.input-group--wide {
  grid-column: 1 / -1;
}

.input-group--property {
  align-content: start;
}

.input-group--property .field + .field {
  margin-top: 0.15rem;
}

.helper-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.check-card {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-height: 3rem;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel-strong);
  cursor: pointer;
}

.check-card input {
  width: 1rem;
  height: 1rem;
  margin: 0;
  accent-color: var(--accent-dark);
}

.check-card span {
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.35;
}

.psych-divider {
  height: 1px;
  margin: 0.95rem 0;
  background: var(--line);
}

.pc-status {
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.6);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
  border: 1px solid rgba(255, 255, 255, 0.55);
}

.pc-status--ready {
  color: var(--ink);
  background: rgba(59, 130, 246, 0.09);
}

.pc-status--warning {
  color: #7c3300;
  background: rgba(251, 146, 60, 0.14);
}

.pc-status--error {
  color: #7f1d1d;
  background: rgba(239, 68, 68, 0.13);
}

.pc-table-scroll {
  max-height: 24rem;
  background: rgba(255, 255, 255, 0.62);
  outline: none;
}

.pc-table-scroll:focus {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.pc-states-table th,
.pc-states-table td {
  font-size: 0.76rem;
}

.pc-states-table thead th:first-child {
  text-align: left;
}

.pc-prev-cell {
  text-align: left;
}

.pc-prev-select,
.pc-prev-select--card {
  width: 100%;
  min-width: 7rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  font: inherit;
  font-size: 0.74rem;
  padding: 0.28rem 0.55rem;
}

.pc-states-table tbody tr {
  cursor: pointer;
}

.pc-states-table tbody tr.pc-selected {
  background: rgba(59, 130, 246, 0.1);
}

.pc-states-table tbody tr.pc-selected:hover {
  background: rgba(59, 130, 246, 0.14);
}

.pc-table-actions {
  margin-top: 0.8rem;
}

.pc-state-cards {
  display: none;
  gap: 0.7rem;
}

.pc-state-card {
  padding: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 6px 18px rgba(20, 50, 100, 0.05);
}

.pc-state-card.is-selected {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.18);
}

.pc-state-card__head {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: flex-start;
}

.pc-state-card__title {
  font-size: 0.88rem;
  font-weight: 700;
}

.pc-state-card__prev {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.74rem;
}

.pc-prev-control {
  margin-top: 0.55rem;
}

.pc-state-card__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem 0.65rem;
  margin-top: 0.75rem;
}

.pc-state-card__metric {
  min-width: 0;
}

.pc-state-card__label {
  display: block;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pc-state-card__value {
  display: block;
  margin-top: 0.1rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.pc-state-card__actions {
  display: flex;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.pc-state-card__actions .button {
  flex: 1 1 0;
}

.psych-chart-panel {
  margin-top: 0.9rem;
}

.psych-chart-frame {
  appearance: none;
  position: relative;
  display: block;
  width: 100%;
  min-height: 42rem;
  padding: 0;
  font: inherit;
  text-align: left;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(241, 247, 255, 0.94));
  cursor: zoom-in;
  overflow: hidden;
}

#pc-chart {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 42rem;
}

.psych-chart-frame__hint {
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  background: rgba(20, 38, 58, 0.74);
  color: #ffffff;
  font-size: 0.74rem;
  font-weight: 700;
  pointer-events: none;
}

.chart-modal[hidden] {
  display: none;
}

.chart-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
}

.chart-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 15, 26, 0.72);
  backdrop-filter: blur(4px);
}

.chart-modal__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: min(96vw, 1400px);
  max-height: calc(100vh - 2rem);
  margin: 1rem auto;
  padding: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 1.15rem;
  background: rgba(246, 250, 255, 0.98);
  box-shadow: 0 18px 48px rgba(3, 12, 27, 0.35);
}

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

.chart-modal__copy {
  color: var(--muted);
  font-size: 0.8rem;
}

.chart-modal__close {
  appearance: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  border-radius: 999px;
  background: rgba(20, 38, 58, 0.08);
  color: var(--ink);
  font-size: 1.55rem;
  line-height: 1;
  cursor: pointer;
}

.chart-modal__close:hover {
  background: rgba(20, 38, 58, 0.14);
}

.chart-modal__scroll {
  overflow: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding: 0.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #ffffff;
}

#pc-chart-modal-canvas {
  display: block;
}

body.has-chart-modal {
  overflow: hidden;
}

/* ── Data tables ────────────────────────────────────────────────── */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}

.solution-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.solution-table thead th {
  background: rgba(20, 38, 58, 0.06);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  border-bottom: 1px solid var(--line);
  text-align: right;
}

.solution-table thead th:first-child,
.solution-table .corner-cell { text-align: left; }

.solution-table tbody tr:nth-child(even) { background: rgba(20,38,58,0.02); }
.solution-table tbody tr:hover           { background: rgba(59,130,246,0.06); }

.solution-table td,
.solution-table tbody th {
  padding: 0.3rem 0.7rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-align: right;
}

.solution-table tbody th {
  text-align: left;
  font-weight: 700;
  background: rgba(20,38,58,0.04);
  border-right: 1px solid var(--line);
}

.solution-table tbody tr:last-child td,
.solution-table tbody tr:last-child th { border-bottom: none; }

.solution-table td.num { font-variant-numeric: tabular-nums; }

/* heat-map cells — background set inline by JS */
.rect-matrix td.no-value {
  color: var(--muted);
  background: rgba(20,38,58,0.03);
  font-size: 0.7rem;
}

.corner-cell {
  font-weight: 700;
  font-size: 0.7rem;
  color: var(--muted);
  border-right: 1px solid var(--line);
}

/* ── Consulting section ────────────────────────────────────────── */
.consulting-section {
  padding: 1.4rem 1.4rem;
  margin-top: 0.9rem;
  background:
    linear-gradient(135deg, rgba(29, 78, 216, 0.07) 0%, rgba(59, 130, 246, 0.04) 100%),
    var(--panel);
  border-color: rgba(59, 130, 246, 0.2);
  animation: rise-in 0.5s ease both;
  animation-delay: 0.1s;
}

.consulting-inner {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
}

.consulting-text {
  flex: 1 1 0;
  min-width: 0;
}

.consulting-text h2 {
  margin: 0.3rem 0 0.65rem;
  font-size: 1.18rem;
}

.consulting-text p {
  margin: 0 0 0.7rem;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--ink);
}

.consulting-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}

.consulting-tags span {
  display: inline-block;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--accent-dark);
  font-size: 0.74rem;
  font-weight: 700;
}

.consulting-cta {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.7);
  text-align: center;
  min-width: 14rem;
}

.consulting-cta p {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.45;
}

.consulting-btn {
  width: 100%;
  text-align: center;
  text-decoration: none;
  padding: 0.6rem 1rem;
}

@media (max-width: 760px) {
  .consulting-inner { flex-direction: column; }
  .consulting-cta { width: 100%; }
}

/* ── Contact form ──────────────────────────────────────────────── */
.contact-section {
  padding: 1rem 1.1rem;
  margin-top: 0.9rem;
  animation: rise-in 0.5s ease both;
}

.contact-form-grid {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contact-full-width {
  grid-column: 1 / -1;
}

.field--textarea {
  align-items: flex-start;
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
}

.field--textarea textarea {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  line-height: 1.5;
  resize: vertical;
  min-height: 5.5rem;
}

.field--textarea textarea::placeholder { color: var(--muted); }
.field--textarea textarea:focus { outline: none; }

/* ── Liability footer ──────────────────────────────────────────── */
.liability-footer {
  margin-top: 0.75rem;
  padding: 0.7rem 0.95rem;
  border-top: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(20, 38, 58, 0.04);
}

.liability-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.55;
}

.liability-footer a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ── About page ────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
}

.about-panel {
  padding: 1rem 1.1rem;
  animation: rise-in 0.5s ease both;
}

.about-panel--terms { animation-delay: 0.07s; }

.about-body {
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--ink);
}

.about-body p { margin: 0 0 0.75rem; }
.about-body p:last-child { margin-bottom: 0; }

.about-body h3 {
  margin: 1rem 0 0.4rem;
  font-size: 0.85rem;
  color: var(--ink);
}

.about-body ul {
  margin: 0.3rem 0 0.75rem 1.1rem;
  padding: 0;
}

.about-body ul li {
  margin-bottom: 0.25rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.about-body--terms ul li { color: var(--ink); }

.about-tools {
  display: grid;
  gap: 0.7rem;
  margin: 0.6rem 0 0.9rem;
}

.about-tool-card {
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.14);
}

.about-tool-name {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--accent-dark);
  margin-bottom: 0.35rem;
}

.about-accept {
  margin-top: 1.2rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(239, 68, 68, 0.07);
  border: 1px solid rgba(239, 68, 68, 0.18);
}

.about-accept p {
  margin: 0;
  font-size: 0.82rem;
  color: #7f1d1d;
}

/* ── About grid single-column override ─────────────────────────── */
.about-grid--single {
  grid-template-columns: 1fr;
}

/* ── Contact Us ribbon link ─────────────────────────────────────── */
.tool-ribbon__link--contact {
  margin-left: auto;
  background: rgba(59, 130, 246, 0.09);
  color: var(--accent-dark);
}

.tool-ribbon__link--contact:hover {
  background: rgba(59, 130, 246, 0.16);
  color: var(--accent-dark);
}

/* ── Terms & Conditions modal ───────────────────────────────────── */
.terms-modal[hidden] { display: none; }

.terms-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
}

.terms-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 15, 26, 0.72);
  backdrop-filter: blur(4px);
}

.terms-modal__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  width: min(92vw, 780px);
  max-height: calc(100vh - 3rem);
  margin: 1.5rem auto;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 1.15rem;
  background: rgba(246, 250, 255, 0.99);
  box-shadow: 0 18px 48px rgba(3, 12, 27, 0.35);
  overflow: hidden;
}

.terms-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.1rem 0.75rem;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.terms-modal__body {
  overflow-y: auto;
  flex: 1 1 auto;
  padding: 1.1rem 1.25rem 1.4rem;
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--ink);
}

.terms-modal__body h3 {
  margin: 1.1rem 0 0.35rem;
  font-size: 0.84rem;
  color: var(--ink);
}

.terms-modal__body h3:first-child { margin-top: 0; }

.terms-modal__body p {
  margin: 0 0 0.65rem;
}

.terms-modal__body ul {
  margin: 0.25rem 0 0.65rem 1.1rem;
  padding: 0;
}

.terms-modal__body ul li {
  margin-bottom: 0.22rem;
  color: var(--ink);
}

.terms-modal__date {
  color: var(--muted);
  font-size: 0.76rem;
  margin-bottom: 1rem;
}

/* ── Pipe network optimizer ────────────────────────────────────── */
.optimizer-page {
  display: grid;
  gap: 0.9rem;
  min-width: 0;
  animation: rise-in 0.45s ease both;
}

.optimizer-toolbar-panel,
.optimizer-workspace-panel,
.optimizer-summary-panel,
.optimizer-scenarios-panel,
.optimizer-legend-panel,
.optimizer-notes-panel {
  padding: 0.95rem;
  min-width: 0;
}

.optimizer-toolbar-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.optimizer-control-block {
  min-width: 0;
  padding: 0.8rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.46);
  border: 1px solid rgba(255, 255, 255, 0.55);
}

.optimizer-control-block h3 {
  margin-bottom: 0.45rem;
}

.optimizer-mode-group,
.optimizer-button-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.optimizer-mode-btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.48rem 0.85rem;
  background: rgba(255, 255, 255, 0.62);
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms, border-color 120ms, background 120ms, color 120ms;
}

.optimizer-mode-btn:hover {
  transform: translateY(-1px);
  color: var(--ink);
}

.optimizer-mode-btn.is-active {
  color: var(--ink);
  border-color: rgba(59, 130, 246, 0.35);
  background: rgba(59, 130, 246, 0.12);
}

.optimizer-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.optimizer-main-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.45fr) minmax(20rem, 0.82fr);
  align-items: start;
  min-width: 0;
}

.optimizer-sidebar {
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.optimizer-zoom-actions {
  align-items: center;
}

.optimizer-zoom-actions .button {
  min-width: 2.5rem;
  padding-left: 0.7rem;
  padding-right: 0.7rem;
}

.optimizer-zoom-label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.optimizer-scroll-shell {
  width: 100%;
  max-width: 100%;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: #121627;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
  user-select: none;
  -webkit-user-select: none;
}

.optimizer-scroll {
  overflow: auto;
  width: 100%;
  max-width: 100%;
  min-height: 34rem;
  max-height: min(72vh, 52rem);
  background:
    radial-gradient(circle at 8% 10%, rgba(66, 165, 245, 0.08), transparent 26%),
    linear-gradient(180deg, #1b1c31 0%, #111827 100%);
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  touch-action: pan-x pan-y pinch-zoom;
  user-select: none;
  -webkit-user-select: none;
}

.optimizer-scroll.optimizer-scroll--draw-mode {
  touch-action: none;
}

.optimizer-workspace {
  position: relative;
  width: 100%;
  min-width: 100%;
  min-height: 100%;
  background-color: #1a1a2e;
  background-image: radial-gradient(circle at 0 0, rgba(68, 102, 204, 0.88) 0 calc(var(--grid-dot-size, 3px) / 2), transparent calc(var(--grid-dot-size, 3px) / 2 + 0.8px));
  background-size: var(--grid-step, 40px) var(--grid-step, 40px);
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.optimizer-workspace--no-grid {
  background-image: none;
}

.optimizer-svg {
  position: absolute;
  inset: 0;
  display: block;
  user-select: none;
  -webkit-user-select: none;
}

.optimizer-workspace-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.2rem;
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.optimizer-result-grid,
.optimizer-details-list {
  margin-top: 0;
}

.optimizer-scenario-actions {
  gap: 0.35rem;
}

.optimizer-scenario-list {
  display: grid;
  gap: 0.55rem;
  max-height: 34rem;
  overflow: auto;
  padding-right: 0.1rem;
}

.optimizer-scenario-card {
  appearance: none;
  width: 100%;
  display: grid;
  gap: 0.28rem;
  padding: 0.75rem 0.8rem;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.6);
  color: var(--ink);
  cursor: pointer;
  transition: transform 120ms, border-color 120ms, background 120ms;
}

.optimizer-scenario-card:hover {
  transform: translateY(-1px);
  border-color: rgba(59, 130, 246, 0.28);
}

.optimizer-scenario-card.is-active {
  border-color: rgba(59, 130, 246, 0.38);
  background: rgba(59, 130, 246, 0.1);
}

.optimizer-scenario-card__title {
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.35;
}

.optimizer-scenario-card__meta {
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.45;
}

.optimizer-empty-state {
  margin: 0;
  padding: 0.75rem 0.8rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.48);
  border: 1px dashed rgba(20, 38, 58, 0.16);
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

.optimizer-legend-grid {
  display: grid;
  gap: 0.5rem;
}

.optimizer-legend-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  font-size: 0.8rem;
}

.optimizer-legend-swatch {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 999px;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.optimizer-legend-swatch--supply {
  background: #66bb6a;
}

.optimizer-legend-swatch--load {
  background: #ef5350;
}

.optimizer-legend-swatch--failure {
  background: #ff9800;
}

.optimizer-legend-swatch--junction {
  background: #b0b0cc;
  border-color: rgba(20, 38, 58, 0.25);
}

.optimizer-legend-swatch--flow {
  width: 1.35rem;
  height: 0.34rem;
  border-radius: 999px;
  border: 0;
  background: #42a5f5;
}

.optimizer-legend-swatch--broken {
  width: 1.35rem;
  height: 0.34rem;
  border-radius: 999px;
  border: 0;
  background: repeating-linear-gradient(90deg, #ff1744 0 8px, transparent 8px 12px);
}

.optimizer-modal__dialog {
  width: min(92vw, 34rem);
  max-width: 34rem;
}

.optimizer-modal__form {
  display: grid;
  gap: 0.7rem;
}

/* ── Utility ───────────────────────────────────────────────────── */
.is-hidden { display: none; }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .layout, .notes-grid { grid-template-columns: 1fr; }
  .weather-station-grid,
  .weather-workflow-grid { grid-template-columns: 1fr; }
  .psych-top-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .optimizer-toolbar-grid,
  .optimizer-main-grid { grid-template-columns: 1fr; }
  .panel-heading--split {
    flex-direction: column;
  }
  .panel-heading--split .actions {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .contact-form-grid { grid-template-columns: 1fr; }
  .page-shell { width: calc(100% - 1rem); padding: 0.75rem 0 2rem; }

  .inputs-panel, .results-panel, .notes-panel, .grid-panel,
  .psych-input-panel, .psych-results-panel, .psych-states-panel, .psych-chart-panel,
  .optimizer-toolbar-panel, .optimizer-workspace-panel, .optimizer-summary-panel,
  .optimizer-scenarios-panel, .optimizer-legend-panel, .optimizer-notes-panel {
    padding: 0.8rem;
    border-radius: var(--radius-md);
  }

  .form-grid, .result-grid, .details-list, .psych-form-grid, .psych-output-grid {
    grid-template-columns: 1fr;
  }
  .field { padding-left: 0.6rem; }
  h1 { white-space: normal; }
  .support-bar { flex-direction: column; align-items: flex-start; }
  .site-header {
    top: 0.4rem;
  }
  .site-titlebar,
  .tool-ribbon {
    border-radius: 1rem;
  }
  .site-titlebar {
    padding: 0.4rem 0.7rem;
  }
  .site-title {
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-align: center;
  }
  .tool-ribbon {
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem;
    overflow: hidden;
  }
  .tool-ribbon--mobile .tool-ribbon__link {
    display: none;
  }
  .tool-ribbon--mobile .tool-ribbon__link:not(.tool-ribbon__link--hidden) {
    display: inline-flex;
    flex: 1 1 auto;
    min-width: 0;
    justify-content: flex-start;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .tool-ribbon--mobile .tool-ribbon__select-wrap {
    display: flex;
  }
  .tool-ribbon__select {
    max-width: 6.8rem;
  }
  .tab-bar {
    width: 100%;
  }
  .tab-btn {
    flex: 1 1 9rem;
  }
  .psych-intro {
    font-size: 0.8rem;
  }
  .weather-form-grid,
  .weather-output-grid,
  .weather-details-list {
    grid-template-columns: 1fr;
  }
  .psych-top-grid,
  .psych-form-grid,
  .psych-output-grid,
  .pc-state-card__metrics {
    grid-template-columns: 1fr;
  }
  .psych-actions,
  .pc-table-actions,
  .psych-chart-actions,
  .pc-state-card__actions,
  .optimizer-mode-group,
  .optimizer-button-grid,
  .optimizer-scenario-actions {
    flex-direction: column;
  }
  .psych-actions .button,
  .pc-table-actions .button,
  .psych-chart-actions .button,
  .pc-state-card__actions .button,
  .optimizer-button-grid .button,
  .optimizer-scenario-actions .button,
  .optimizer-mode-btn {
    width: 100%;
  }
  .pc-table-scroll {
    display: none;
  }
  .pc-state-cards {
    display: grid;
  }
  .psych-chart-panel {
    margin-top: 0.75rem;
  }
  .psych-chart-frame,
  #pc-chart {
    min-height: 22rem;
  }
  .psych-chart-frame__hint {
    right: 0.6rem;
    bottom: 0.6rem;
    font-size: 0.7rem;
  }
  .chart-modal__dialog {
    width: calc(100vw - 1rem);
    max-height: calc(100vh - 1rem);
    margin: 0.5rem auto;
    padding: 0.7rem;
  }
  .chart-modal__scroll {
    min-height: 16rem;
  }
  .weather-progress-track {
    height: 0.82rem;
  }
  .optimizer-toolbar-grid {
    gap: 0.6rem;
  }
  .optimizer-control-block {
    padding: 0.7rem;
  }
  .optimizer-mode-group,
  .optimizer-button-grid,
  .optimizer-scenario-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
  }
  .optimizer-mode-group .optimizer-mode-btn:last-child {
    grid-column: 1 / -1;
  }
  .optimizer-zoom-actions {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, max-content));
    gap: 0.45rem;
    justify-content: flex-start;
  }
  .optimizer-zoom-label {
    grid-column: 1 / -1;
  }
  .optimizer-result-grid,
  .optimizer-details-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .optimizer-scroll {
    min-height: 19rem;
    max-height: 58vh;
  }
  .optimizer-workspace {
    min-width: 100%;
  }
  .optimizer-workspace-footer {
    flex-direction: column;
    gap: 0.35rem;
  }
}

@media (max-width: 560px) {
  .optimizer-mode-group,
  .optimizer-button-grid,
  .optimizer-scenario-actions,
  .optimizer-result-grid,
  .optimizer-details-list {
    grid-template-columns: 1fr;
  }

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

  .optimizer-zoom-actions .button {
    min-width: 0;
  }

  .optimizer-toolbar-panel,
  .optimizer-workspace-panel,
  .optimizer-summary-panel,
  .optimizer-scenarios-panel,
  .optimizer-legend-panel,
  .optimizer-notes-panel,
  .optimizer-scroll-shell,
  .optimizer-scroll {
    width: 100%;
    max-width: 100%;
  }
}