:root {
  --bg: #0a0a0f;
  --bg-elevated: rgba(18, 22, 34, 0.58);
  --bg-card: rgba(16, 19, 30, 0.44);
  --bg-card-strong: rgba(19, 24, 37, 0.64);
  --border: rgba(79, 79, 102, 0.5);
  --border-strong: rgba(123, 188, 255, 0.42);
  --text: #ebe7e1;
  --text-strong: rgba(235, 231, 225, 0.92);
  --text-soft: #a3a0af;
  --text-faint: #7f7a8d;
  --accent: #7bbcff;
  --accent-teal: #61d2ff;
  --accent-amber: #f0a06e;
  --accent-red: #ff8d85;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 14px 36px rgba(0, 0, 0, 0.22);
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "DM Sans", sans-serif;
  --mono: "JetBrains Mono", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at 14% 10%, rgba(83, 163, 255, 0.24), transparent 30%),
    radial-gradient(circle at 82% 14%, rgba(92, 221, 255, 0.2), transparent 24%),
    radial-gradient(circle at 50% 84%, rgba(67, 112, 255, 0.16), transparent 34%),
    linear-gradient(180deg, rgba(8, 10, 18, 0.74), rgba(8, 10, 18, 0.88));
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
  color-scheme: dark;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-teal);
}

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

button {
  border: 0;
  background: none;
}

#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  opacity: 0.64;
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.3s ease;
}

.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(580px, 1.03fr) minmax(445px, 0.97fr);
  gap: clamp(18px, 2vw, 28px);
  padding: clamp(16px, 2vw, 28px);
}

.panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(18px, 2vw, 28px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(16, 20, 33, 0.44), rgba(10, 13, 22, 0.58));
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.panel-inputs {
  position: relative;
  justify-content: flex-start;
  gap: clamp(18px, 2vh, 24px);
}

.panel-results {
  justify-content: flex-start;
  gap: clamp(8px, 0.9vh, 12px);
  background: linear-gradient(180deg, rgba(13, 17, 29, 0.38), rgba(10, 12, 20, 0.54));
}

.hero-block {
  display: grid;
  gap: 10px;
}

.hero-top-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
}

.theme-dock {
  display: grid;
  gap: 8px;
  justify-items: end;
  align-content: start;
}

.theme-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.theme-switch {
  display: inline-grid;
  grid-auto-flow: column;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid rgba(104, 149, 214, 0.34);
  background:
    linear-gradient(180deg, rgba(18, 25, 40, 0.42), rgba(10, 13, 23, 0.6)),
    radial-gradient(circle at top right, rgba(97, 210, 255, 0.16), transparent 40%);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.theme-chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-soft);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.theme-chip:hover {
  transform: translateY(-1px);
  color: var(--text);
}

.theme-chip.is-active {
  border-color: rgba(123, 188, 255, 0.46);
  background: linear-gradient(180deg, rgba(123, 188, 255, 0.2), rgba(97, 210, 255, 0.08));
  color: var(--text);
}

.theme-chip:focus-visible {
  outline: 2px solid rgba(110, 224, 240, 0.56);
  outline-offset: 2px;
}

.eyebrow-soft {
  color: var(--accent-teal);
}

h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(43px, 4.7vw, 66px);
  line-height: 1;
  letter-spacing: -0.03em;
  max-width: none;
  white-space: nowrap;
}

.title-accent {
  color: var(--accent);
}

.intro,
.results-copy,
.block-copy,
.mini-copy,
.small-note,
.context-copy,
.metric-sub,
.field-preview,
.field-error,
.advanced-note {
  color: var(--text-soft);
}

.intro {
  max-width: 56ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.5;
}

.controls {
  display: grid;
  gap: 10px;
}

.advanced-controls-bar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-top: 2px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.field-grid-top {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
}

.top-left-stack {
  display: grid;
  gap: 10px;
}

.field-card {
  display: grid;
  gap: 7px;
  padding: 12px 14px 11px;
  border-radius: 18px;
  background: rgba(17, 20, 31, 0.42);
  border: 1px solid rgba(98, 146, 214, 0.34);
  box-shadow: var(--shadow-soft);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.field-card-tight {
  height: 100%;
}

.gpu-picker {
  display: grid;
  gap: 8px;
  min-height: 100%;
  align-content: start;
}

.custom-select {
  position: relative;
}

.custom-select-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid rgba(86, 132, 196, 0.56);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(11, 15, 25, 0.74), rgba(8, 10, 19, 0.84)),
    radial-gradient(circle at top right, rgba(97, 210, 255, 0.18), transparent 34%);
  padding: 11px 14px;
  color: var(--text);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  box-shadow: inset 0 0 0 1px rgba(97, 210, 255, 0.06);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, color 0.25s ease;
}

.custom-select-trigger::after {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-right: 2px solid rgba(123, 188, 255, 0.92);
  border-bottom: 2px solid rgba(123, 188, 255, 0.92);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.18s ease;
}

.custom-select.is-open .custom-select-trigger::after {
  transform: rotate(-135deg) translateX(-1px);
}

.custom-select-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  display: grid;
  gap: 6px;
  padding: 8px;
  border-radius: 18px;
  border: 1px solid rgba(95, 150, 214, 0.5);
  background:
    linear-gradient(180deg, rgba(14, 18, 30, 0.8), rgba(10, 12, 21, 0.9)),
    radial-gradient(circle at top right, rgba(97, 210, 255, 0.2), transparent 40%);
  box-shadow: 0 24px 52px rgba(0, 0, 0, 0.46);
  z-index: 15;
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.custom-select-menu[hidden] {
  display: none;
}

.custom-select-option {
  width: 100%;
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid transparent;
  text-align: left;
  background: rgba(11, 13, 20, 0.84);
  transition: background 0.18s ease, border-color 0.18s ease;
}

.custom-select-option:hover,
.custom-select-option:focus-visible {
  border-color: rgba(123, 188, 255, 0.42);
  background: rgba(20, 31, 48, 0.96);
}

.custom-select-option.is-active {
  border-color: rgba(123, 188, 255, 0.56);
  background: linear-gradient(180deg, rgba(123, 188, 255, 0.22), rgba(97, 210, 255, 0.08));
}

.custom-select-option-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.custom-select-option-meta {
  font-size: 11px;
  color: var(--text-soft);
  line-height: 1.35;
}

.field-label,
.block-label,
.metric-label,
.context-label {
  text-transform: uppercase;
}

.field-label,
.metric-label {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.13em;
  color: rgba(179, 220, 255, 0.96);
}

.block-label,
.context-label {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(152, 206, 255, 0.9);
}

.field-card input,
.constraint-input input,
.constraint-input select {
  width: 100%;
  border: 1px solid rgba(97, 97, 122, 0.45);
  border-radius: 14px;
  background: rgba(10, 10, 15, 0.8);
  padding: 10px 12px;
  color: var(--text);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.02em;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.field-card input::placeholder,
.constraint-input input::placeholder {
  color: rgba(163, 160, 175, 0.45);
}

.field-card input:focus,
.constraint-input input:focus,
.constraint-input select:focus,
.custom-select-trigger:focus-visible,
.advanced-toggle:focus-visible,
.segment:focus-visible {
  outline: 2px solid rgba(110, 224, 240, 0.56);
  outline-offset: 2px;
}

.field-preview,
.field-error {
  min-height: 16px;
  font-size: 11px;
  line-height: 1.35;
}

.field-preview:empty,
.field-error:empty,
.segment-meta:empty {
  display: none;
  min-height: 0;
}

.field-error {
  color: var(--accent-red);
}

.control-block,
.advanced-card,
.metric-card,
.context-card {
  border-radius: 20px;
  background: rgba(15, 18, 30, 0.38);
  border: 1px solid rgba(95, 128, 176, 0.32);
  box-shadow: var(--shadow-soft);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.control-block {
  padding: 12px 14px 13px;
  display: grid;
  gap: 8px;
}

.control-block-compact {
  height: 100%;
}

.block-header,
.mini-header,
.results-header {
  display: grid;
  gap: 6px;
}

.block-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.block-meta {
  display: grid;
  gap: 6px;
}

.segmented-grid {
  display: grid;
  gap: 10px;
}

.gpu-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

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

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

.mode-grid .segment-title {
  line-height: 1.24;
  font-size: 12px;
}

.segment {
  display: grid;
  gap: 6px;
  width: 100%;
  padding: 10px 10px 9px;
  border-radius: 16px;
  border: 1px solid rgba(79, 79, 102, 0.42);
  background: rgba(10, 12, 20, 0.58);
  text-align: left;
  cursor: pointer;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}

.segment:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: rgba(123, 188, 255, 0.52);
}

.segment.is-active {
  border-color: var(--border-strong);
  background: linear-gradient(180deg, rgba(123, 188, 255, 0.18), rgba(97, 210, 255, 0.08));
}

.segment:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.segment-title {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-strong);
}

.segment-meta {
  font-size: 12px;
  color: var(--text-soft);
  line-height: 1.4;
}

.segment-emphasis {
  color: var(--accent);
}

.advanced-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 16px;
  cursor: pointer;
  color: var(--text);
  border-radius: 999px;
  border: 1px solid rgba(104, 149, 214, 0.42);
  background:
    linear-gradient(180deg, rgba(18, 25, 40, 0.56), rgba(10, 13, 23, 0.72)),
    radial-gradient(circle at top right, rgba(97, 210, 255, 0.18), transparent 40%);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.advanced-toggle::after {
  content: "";
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-right: 2px solid rgba(123, 188, 255, 0.92);
  border-bottom: 2px solid rgba(123, 188, 255, 0.92);
  transform: rotate(45deg) translateY(-1px);
  transition: transform 0.18s ease;
}

.advanced-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(123, 188, 255, 0.62);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.2);
}

.advanced-toggle.is-active::after {
  transform: rotate(-135deg) translateX(-1px);
}

.advanced-toggle:hover,
.advanced-close:hover {
  border-color: var(--border-strong);
}

.advanced-panel {
  position: static;
  width: auto;
  max-height: none;
  overflow: visible;
  margin-top: 0;
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 22px;
  border: 1px solid rgba(123, 188, 255, 0.26);
  background:
    linear-gradient(180deg, rgba(13, 18, 30, 0.5), rgba(10, 12, 22, 0.64)),
    radial-gradient(circle at top right, rgba(97, 210, 255, 0.22), transparent 38%);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.46);
  backdrop-filter: blur(14px);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.advanced-panel[hidden] {
  display: none;
}

.advanced-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.advanced-close {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(79, 79, 102, 0.42);
  background: rgba(10, 10, 15, 0.9);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

.advanced-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.74fr) minmax(0, 1.1fr);
  gap: 12px;
}

.advanced-stack {
  display: grid;
  gap: 10px;
}

.advanced-card {
  padding: 11px 12px 12px;
  display: grid;
  gap: 10px;
}

.advanced-card-slider {
  align-content: start;
}

.mini-value {
  font-family: var(--serif);
  font-size: 32px;
  line-height: 0.95;
  color: var(--accent);
}

.mini-value-input {
  width: 2.6ch;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: inherit;
  letter-spacing: inherit;
  text-align: right;
}

.mini-value-input:focus {
  outline: none;
}

.mini-value-input::-webkit-outer-spin-button,
.mini-value-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.advanced-note {
  font-size: 12px;
  line-height: 1.45;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.constraint-input-area {
  min-height: 60px;
}

.constraint-input {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(190px, 0.9fr);
  gap: 10px;
  align-items: end;
}

.constraint-input-single {
  grid-template-columns: minmax(0, 1fr);
}

.constraint-caption {
  font-size: 11px;
  color: var(--text-soft);
  line-height: 1.4;
}

.input-footer {
  margin-top: auto;
}

.small-note {
  font-size: 12px;
  line-height: 1.45;
}

.primary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.metric-card {
  display: grid;
  gap: 10px;
  padding: 14px 16px 15px;
}

.metric-card-primary {
  background:
    linear-gradient(180deg, rgba(123, 188, 255, 0.24), rgba(14, 18, 30, 0.48)),
    radial-gradient(circle at top right, rgba(97, 210, 255, 0.2), transparent 34%);
  border-color: rgba(123, 188, 255, 0.3);
}

.metric-label {
  color: var(--text-strong);
  line-height: 1.24;
}

.metric-value {
  font-family: var(--sans);
  font-size: clamp(32px, 3.1vw, 48px);
  font-weight: 500;
  line-height: 0.94;
  letter-spacing: -0.045em;
  font-variant-numeric: lining-nums tabular-nums;
}

.metric-value-small {
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 500;
}

.metric-sub {
  min-height: 32px;
  font-size: 12px;
  line-height: 1.45;
}

.metric-sub:empty {
  display: none;
  min-height: 0;
}

.warning-stack {
  display: grid;
  gap: 10px;
}

.warning-card {
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(240, 160, 110, 0.28);
  background: rgba(240, 160, 110, 0.08);
}

.warning-card.is-danger {
  border-color: rgba(255, 141, 133, 0.34);
  background: rgba(255, 141, 133, 0.08);
}

.warning-title {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 4px;
}

.warning-copy {
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.45;
}

.results-footer {
  display: grid;
  gap: 8px;
  margin-top: auto;
}

.results-footnote {
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-soft);
}

.chart-card {
  flex: 1 1 auto;
  min-height: 260px;
  gap: 8px;
  overflow: hidden;
  grid-template-rows: auto minmax(0, 1fr);
  align-content: start;
}

.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.chart-legend-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(123, 188, 255, 0.18);
  background: rgba(11, 15, 26, 0.28);
  color: var(--text-soft);
  font-size: 11px;
  line-height: 1;
}

.chart-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(123, 188, 255, 0.45);
}

.chart-legend-pill-muted .chart-legend-dot {
  background: transparent;
  box-shadow: none;
  border: 1.5px dashed rgba(235, 231, 225, 0.7);
}

.chart-shell,
.schedule-chart,
.schedule-chart-svg {
  width: 100%;
  height: 100%;
}

.chart-shell {
  display: flex;
  align-items: stretch;
  min-height: 0;
}

.schedule-chart {
  flex: 1 1 auto;
  min-height: 210px;
  touch-action: none;
  user-select: none;
}

.schedule-chart-empty {
  height: 100%;
  display: grid;
  place-items: center;
  color: var(--text-soft);
  font-size: 13px;
}

.schedule-chart-svg {
  display: block;
}

.schedule-chart.is-interactive {
  cursor: grab;
}

.schedule-chart.is-interactive.is-dragging {
  cursor: grabbing;
}

.schedule-chart.is-interactive.is-hovering .chart-marker,
.schedule-chart.is-interactive.is-dragging .chart-marker {
  stroke-width: 3;
}

.schedule-chart-svg .chart-grid {
  stroke: var(--border);
  stroke-width: 1;
  opacity: 0.55;
}

.schedule-chart-svg .chart-axis {
  stroke: var(--border);
  stroke-width: 1;
  opacity: 0.75;
}

.schedule-chart-svg .chart-axis-label,
.schedule-chart-svg .chart-axis-value,
.schedule-chart-svg .chart-point-label {
  fill: var(--text-soft);
  font-family: var(--mono);
}

.schedule-chart-svg .chart-axis-label {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.schedule-chart-svg .chart-axis-value {
  font-size: 10px;
}

.schedule-chart-svg .chart-area {
  fill: url(#schedule-area-gradient);
}

.schedule-chart-svg .chart-line-glow {
  fill: none;
  stroke: rgba(97, 210, 255, 0.2);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.schedule-chart-svg .chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.schedule-chart-svg .chart-floor {
  fill: none;
  stroke: rgba(235, 231, 225, 0.64);
  stroke-width: 1.5;
  stroke-dasharray: 5 6;
}

.schedule-chart-svg .chart-floor-label {
  fill: var(--text-soft);
  font-size: 10px;
  font-family: var(--mono);
}

.schedule-chart-svg .chart-marker {
  fill: rgba(10, 12, 20, 0.92);
  stroke: var(--accent);
  stroke-width: 2.5;
}

.schedule-chart-svg .chart-marker-core {
  fill: var(--accent-teal);
  opacity: 0.95;
}

.schedule-chart-svg .chart-callout {
  fill: rgba(8, 12, 21, 0.9);
  stroke: rgba(123, 188, 255, 0.26);
  stroke-width: 1;
}

.schedule-chart-svg .chart-callout-text {
  fill: var(--text);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
}

.schedule-chart-svg .chart-callout-kicker {
  fill: var(--accent);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

body[data-theme="animated"] {
  background:
    radial-gradient(circle at 14% 10%, rgba(83, 163, 255, 0.24), transparent 30%),
    radial-gradient(circle at 82% 14%, rgba(92, 221, 255, 0.2), transparent 24%),
    radial-gradient(circle at 50% 84%, rgba(67, 112, 255, 0.16), transparent 34%),
    linear-gradient(180deg, rgba(8, 10, 18, 0.74), rgba(8, 10, 18, 0.88));
  color-scheme: dark;
}

body[data-theme="animated"] #bg-canvas {
  opacity: 0.64;
}

body[data-theme="dark"] {
  background:
    radial-gradient(circle at 18% 14%, rgba(63, 102, 168, 0.18), transparent 32%),
    radial-gradient(circle at 78% 12%, rgba(49, 90, 170, 0.15), transparent 26%),
    linear-gradient(180deg, #07101c, #091220 54%, #0a1423);
  color-scheme: dark;
}

body[data-theme="dark"] #bg-canvas {
  opacity: 0;
}

body[data-theme="light"] {
  --bg: #f6efe3;
  --bg-elevated: rgba(255, 250, 242, 0.86);
  --bg-card: rgba(255, 252, 247, 0.82);
  --bg-card-strong: rgba(250, 244, 235, 0.92);
  --border: rgba(107, 137, 189, 0.26);
  --border-strong: rgba(73, 119, 218, 0.38);
  --text: #1f2a40;
  --text-strong: rgba(31, 42, 64, 0.92);
  --text-soft: #64738b;
  --text-faint: #8c97ab;
  --accent: #3d72ff;
  --accent-teal: #4aa8ff;
  --shadow: 0 24px 64px rgba(78, 96, 128, 0.14);
  --shadow-soft: 0 10px 26px rgba(78, 96, 128, 0.1);
  background:
    radial-gradient(circle at 16% 10%, rgba(117, 173, 255, 0.2), transparent 34%),
    radial-gradient(circle at 84% 16%, rgba(86, 199, 255, 0.14), transparent 24%),
    radial-gradient(circle at 50% 92%, rgba(90, 132, 224, 0.1), transparent 28%),
    linear-gradient(180deg, #fbf7ef, #f3ecdf 52%, #efe7da);
  color-scheme: light;
}

body[data-theme="light"] #bg-canvas {
  opacity: 0;
}

body[data-theme="light"] .panel {
  background: linear-gradient(180deg, rgba(255, 251, 245, 0.82), rgba(246, 239, 228, 0.76));
  border-color: rgba(107, 137, 189, 0.22);
  box-shadow: 0 22px 52px rgba(78, 96, 128, 0.12);
}

body[data-theme="light"] .panel-results {
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.88), rgba(245, 237, 224, 0.8));
}

body[data-theme="light"] .field-card,
body[data-theme="light"] .control-block,
body[data-theme="light"] .advanced-card,
body[data-theme="light"] .metric-card,
body[data-theme="light"] .context-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(248, 242, 233, 0.62));
  border-color: rgba(107, 137, 189, 0.22);
  box-shadow: 0 10px 24px rgba(78, 96, 128, 0.08);
}

body[data-theme="light"] .metric-card-primary {
  background:
    linear-gradient(180deg, rgba(87, 140, 255, 0.18), rgba(255, 255, 255, 0.74)),
    radial-gradient(circle at top right, rgba(74, 168, 255, 0.16), transparent 34%);
  border-color: rgba(87, 140, 255, 0.28);
}

body[data-theme="light"] .field-card input,
body[data-theme="light"] .constraint-input input,
body[data-theme="light"] .constraint-input select {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(121, 148, 194, 0.36);
  color: var(--text);
}

body[data-theme="light"] .field-card input::placeholder,
body[data-theme="light"] .constraint-input input::placeholder {
  color: rgba(100, 115, 139, 0.45);
}

body[data-theme="light"] .custom-select-trigger {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 240, 231, 0.84)),
    radial-gradient(circle at top right, rgba(74, 168, 255, 0.14), transparent 34%);
  border-color: rgba(121, 148, 194, 0.42);
  box-shadow: inset 0 0 0 1px rgba(74, 168, 255, 0.08);
}

body[data-theme="light"] .custom-select-trigger::after {
  border-right-color: rgba(61, 114, 255, 0.92);
  border-bottom-color: rgba(61, 114, 255, 0.92);
}

body[data-theme="light"] .custom-select-menu {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 239, 229, 0.9)),
    radial-gradient(circle at top right, rgba(74, 168, 255, 0.14), transparent 40%);
  border-color: rgba(121, 148, 194, 0.34);
  box-shadow: 0 22px 48px rgba(78, 96, 128, 0.18);
}

body[data-theme="light"] .custom-select-option {
  background: rgba(250, 246, 240, 0.84);
}

body[data-theme="light"] .custom-select-option:hover,
body[data-theme="light"] .custom-select-option:focus-visible {
  border-color: rgba(87, 140, 255, 0.38);
  background: rgba(233, 241, 255, 0.92);
}

body[data-theme="light"] .custom-select-option.is-active {
  border-color: rgba(87, 140, 255, 0.44);
  background: linear-gradient(180deg, rgba(87, 140, 255, 0.16), rgba(74, 168, 255, 0.08));
}

body[data-theme="light"] .advanced-toggle,
body[data-theme="light"] .theme-switch {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(245, 238, 228, 0.82)),
    radial-gradient(circle at top right, rgba(74, 168, 255, 0.14), transparent 40%);
  border-color: rgba(121, 148, 194, 0.3);
  box-shadow: 0 12px 26px rgba(78, 96, 128, 0.1);
}

body[data-theme="light"] .advanced-toggle::after {
  border-right-color: rgba(61, 114, 255, 0.92);
  border-bottom-color: rgba(61, 114, 255, 0.92);
}

body[data-theme="light"] .theme-chip {
  color: var(--text-soft);
}

body[data-theme="light"] .theme-chip.is-active,
body[data-theme="light"] .segment.is-active {
  border-color: rgba(87, 140, 255, 0.34);
  background: linear-gradient(180deg, rgba(87, 140, 255, 0.14), rgba(74, 168, 255, 0.08));
  color: var(--text);
}

body[data-theme="light"] .segment {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(121, 148, 194, 0.28);
}

body[data-theme="light"] .advanced-panel {
  background:
    linear-gradient(180deg, rgba(255, 252, 245, 0.86), rgba(246, 238, 225, 0.8)),
    radial-gradient(circle at top right, rgba(74, 168, 255, 0.16), transparent 38%);
  border-color: rgba(107, 137, 189, 0.26);
  box-shadow: 0 30px 72px rgba(78, 96, 128, 0.14);
}

body[data-theme="light"] .warning-title {
  color: var(--text);
}

body[data-theme="light"] .metric-label,
body[data-theme="light"] .field-label {
  color: rgba(61, 114, 255, 0.92);
}

body[data-theme="light"] .block-label,
body[data-theme="light"] .context-label,
body[data-theme="light"] .theme-label,
body[data-theme="light"] .eyebrow {
  color: rgba(61, 114, 255, 0.9);
}

body[data-theme="light"] .chart-legend-pill {
  background: rgba(255, 255, 255, 0.58);
  border-color: rgba(87, 140, 255, 0.18);
}

body[data-theme="light"] .chart-legend-pill-muted .chart-legend-dot {
  border-color: rgba(31, 42, 64, 0.62);
}

body[data-theme="light"] .schedule-chart-svg .chart-line-glow {
  stroke: rgba(74, 168, 255, 0.18);
}

body[data-theme="light"] .schedule-chart-svg .chart-floor {
  stroke: rgba(31, 42, 64, 0.44);
}

body[data-theme="light"] .schedule-chart-svg .chart-callout {
  fill: rgba(255, 252, 247, 0.92);
  stroke: rgba(87, 140, 255, 0.24);
}

@media (min-width: 981px) {
  body {
    overflow: hidden;
  }

  .app-shell {
    height: 100vh;
  }
}

@media (max-width: 1160px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    min-height: 100vh;
  }

  body {
    overflow-y: auto;
  }

  .advanced-panel {
    margin-top: 12px;
  }
}

@media (max-width: 980px) {
  .field-grid,
  .primary-grid,
  .detail-grid,
  .advanced-layout,
  .gpu-grid,
  .mode-grid {
    grid-template-columns: 1fr;
  }

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

  .constraint-input {
    grid-template-columns: 1fr;
  }

  .panel {
    border-radius: 22px;
  }

  .hero-top-row {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .chart-legend {
    justify-content: flex-start;
  }

  .theme-dock {
    justify-items: start;
  }

  h1 {
    max-width: 12ch;
    white-space: normal;
  }

  .advanced-panel {
    margin-top: 12px;
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 14px;
  }

  .panel {
    padding: 18px;
  }

  .block-header-row,
  .advanced-panel-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-height: 760px) and (min-width: 981px) {
  .app-shell {
    padding: 10px;
    gap: 10px;
  }

  .panel {
    padding: 15px;
  }

  .hero-block {
    gap: 8px;
  }

  h1 {
    font-size: 52px;
    max-width: none;
  }

  .intro,
  .results-copy,
  .block-copy,
  .small-note,
  .results-footnote {
    display: none;
  }

  .controls {
    gap: 10px;
  }

  .field-grid,
  .primary-grid,
  .detail-grid,
  .gpu-grid {
    gap: 8px;
  }

  .field-card {
    padding: 12px 12px 10px;
  }

  .field-card input,
  .constraint-input input,
  .constraint-input select {
    font-size: 17px;
    padding: 9px 10px;
  }

  .field-preview {
    display: none;
  }

  .field-error {
    min-height: 12px;
    font-size: 10px;
  }

  .control-block,
  .advanced-card,
  .metric-card {
    padding: 11px 12px 12px;
  }

  .segment {
    padding: 8px;
    gap: 4px;
  }

  .segment-title {
    font-size: 12px;
  }

  .segment-meta,
  .metric-sub,
  .warning-copy,
  .advanced-note,
  .constraint-caption {
    font-size: 11px;
  }

  .metric-value {
    font-size: 42px;
  }

  .metric-value-small {
    font-size: 24px;
  }

  .metric-sub {
    min-height: 26px;
  }

  .chart-card {
    min-height: 190px;
    gap: 10px;
  }

  .schedule-chart {
    min-height: 150px;
  }

  .advanced-panel {
    padding: 12px;
    gap: 10px;
  }

  .advanced-panel-header {
    gap: 8px;
  }

  .advanced-card {
    gap: 10px;
  }

  .constraint-input-area {
    min-height: 50px;
  }

  .results-footer {
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .segment {
    transition: none;
  }
}