/* SOFIA Filter Studio, web version. Colors follow the desktop theme (gui/theme.py). */
:root {
  color-scheme: light;
  --bg: #f3f5f9;
  --surface: #ffffff;
  --surface-2: #fafbfd;
  --border: #e2e6ee;
  --text: #1e2533;
  --muted: #6b7385;
  --accent: #2f6fed;
  --accent-hover: #1e4fbf;
  --accent-soft: #eaf1fe;
  --accent-text: #1e4fbf;
  --success: #15803d;
  --success-soft: #e8f6ee;
  --success-border: #c6e8d2;
  --warning: #b45309;
  --warning-soft: #fdf3e4;
  --warning-border: #f3ddb8;
  --danger: #c2410c;
  --danger-soft: #fdece7;
  --danger-border: #f6c9b8;
  --forbidden: #e5484d;
  --grid: #edf0f5;
  --grid-strong: #dce1ea;
  --tooltip: #1e2533;
  --tooltip-text: #ffffff;
  --shadow: 0 1px 2px rgba(30, 37, 51, 0.04), 0 4px 16px rgba(30, 37, 51, 0.04);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Roboto, sans-serif;
  --sch-wire: #1e2533;
  --sch-part: #1e4fbf;
  --sch-text: #1e2533;
  --sch-muted: #5d6578;
  --sch-label: #b45309;
  --sch-paper: #fafbfd;
  --mono: "Cascadia Mono", Consolas, "SF Mono", "DejaVu Sans Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0f131a;
    --surface: #171c25;
    --surface-2: #131821;
    --border: #283040;
    --text: #e6eaf2;
    --muted: #97a0b3;
    --accent: #5b8def;
    --accent-hover: #7aa3f2;
    --accent-soft: #1c2a45;
    --accent-text: #a9c4f8;
    --success: #4ade80;
    --success-soft: #13281c;
    --success-border: #1f4a30;
    --warning: #f5a524;
    --warning-soft: #2b2213;
    --warning-border: #4d3a17;
    --danger: #f97350;
    --danger-soft: #2e1712;
    --danger-border: #5a2a1d;
    --forbidden: #f2555a;
    --grid: #1f2632;
    --grid-strong: #2c3545;
    --tooltip: #e6eaf2;
    --tooltip-text: #0f131a;
    --shadow: none;
    --sch-wire: #c9d1e0;
    --sch-part: #7aa3f2;
    --sch-text: #e6eaf2;
    --sch-muted: #97a0b3;
    --sch-label: #f5a524;
    --sch-paper: #131821;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f131a;
  --surface: #171c25;
  --surface-2: #131821;
  --border: #283040;
  --text: #e6eaf2;
  --muted: #97a0b3;
  --accent: #5b8def;
  --accent-hover: #7aa3f2;
  --accent-soft: #1c2a45;
  --accent-text: #a9c4f8;
  --success: #4ade80;
  --success-soft: #13281c;
  --success-border: #1f4a30;
  --warning: #f5a524;
  --warning-soft: #2b2213;
  --warning-border: #4d3a17;
  --danger: #f97350;
  --danger-soft: #2e1712;
  --danger-border: #5a2a1d;
  --forbidden: #f2555a;
  --grid: #1f2632;
  --grid-strong: #2c3545;
  --tooltip: #e6eaf2;
  --tooltip-text: #0f131a;
  --shadow: none;
  --sch-wire: #c9d1e0;
  --sch-part: #7aa3f2;
  --sch-text: #e6eaf2;
  --sch-muted: #97a0b3;
  --sch-label: #f5a524;
  --sch-paper: #131821;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.4;
}

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

[hidden] {
  display: none !important;
}

.app {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
  height: 100vh;
  height: 100dvh;
}

/* Sidebar ------------------------------------------------------------------------------------ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  padding-right: 4px;
  min-height: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px 2px 4px;
}

.brand svg {
  width: 40px;
  height: 40px;
  flex: none;
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  line-height: 1.1;
  font-weight: 700;
}

.brand p {
  margin: 2px 0 0;
  color: var(--muted);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 14px 16px 16px;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
}

.step {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.kinds {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.kind {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 4px 7px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}

.kind svg {
  width: 64px;
  height: 36px;
}

.kind .axis {
  fill: none;
  stroke: var(--grid-strong);
  stroke-width: 1.2;
}

.kind .curve {
  fill: none;
  stroke: var(--muted);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.kind:hover {
  border-color: var(--accent);
}

.kind[aria-checked="true"] {
  background: var(--accent-soft);
  border: 2px solid var(--accent);
  padding: 7px 3px 6px;
  color: var(--accent-text);
}

.kind[aria-checked="true"] .curve {
  stroke: var(--accent);
}

.label {
  display: block;
  margin: 12px 0 6px;
  font-weight: 500;
}

.segments {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.segment {
  text-align: left;
  padding: 7px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  cursor: pointer;
}

.segment small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

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

.segment[aria-checked="true"] {
  background: var(--accent-soft);
  border: 2px solid var(--accent);
  padding: 6px 9px;
  color: var(--accent-text);
}

.segment[aria-checked="true"] small {
  color: var(--accent-text);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  margin-bottom: 10px;
}

.field > span {
  font-size: 13px;
}

.group-label {
  margin: 2px 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.input {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.12s, box-shadow 0.12s;
}

.input:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.input input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  padding: 7px 4px 7px 10px;
}

.input .unit {
  padding: 0 10px 0 4px;
  color: var(--muted);
  font-size: 13px;
}

.input.invalid {
  border-color: var(--danger);
  background: var(--danger-soft);
}

select {
  width: 100%;
  appearance: none;
  background: var(--surface)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1.5 1.5 6 6l4.5-4.5' fill='none' stroke='%236b7385' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    no-repeat right 12px center;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 32px 7px 10px;
  cursor: pointer;
}

select:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 12.5px;
}

details.advanced summary {
  cursor: pointer;
  color: var(--accent-text);
  font-weight: 600;
  padding: 2px 0;
  list-style-position: inside;
}

details.advanced[open] summary {
  margin-bottom: 10px;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.check input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.links {
  margin-top: auto;
  padding: 4px 2px 0;
  color: var(--muted);
  font-size: 12.5px;
}

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

.links a:hover {
  text-decoration: underline;
}

/* Results ------------------------------------------------------------------------------------ */
.results {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  min-height: 0;
}

.results-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.results-header .titles {
  flex: 1;
  min-width: 240px;
}

.results-header h2 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 700;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 24px;
}

.chip {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
  font-size: 13px;
}

.chip.ok {
  background: var(--success-soft);
  color: var(--success);
}

.chip.warn {
  background: var(--warning-soft);
  color: var(--warning);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
}

.button svg {
  width: 16px;
  height: 16px;
}

.button:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent-text);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 8px 18px;
}

.button.primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.button:disabled {
  opacity: 0.5;
  cursor: default;
}

.banner {
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
}

.banner.error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

.plot-card {
  flex: 5 1 0;
  min-height: 300px;
  display: flex;
  flex-direction: column;
}

.plot-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.plot-head h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.plot-head p {
  flex: 1;
  min-width: 200px;
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
}

.toggle {
  display: inline-flex;
  gap: 4px;
}

.toggle button {
  padding: 4px 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}

.toggle button[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-text);
}

.plot-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
}

#plot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
  font: 12px var(--font);
}

#plot.dragging {
  cursor: grabbing;
}

.loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  padding: 16px;
}

.loading strong {
  color: var(--text);
  font-size: 15px;
}

.loading.failed strong {
  color: var(--danger);
}

.spinner {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 3px solid var(--accent-soft);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}

.loading.failed .spinner {
  display: none;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.tabs-card {
  flex: 4 1 0;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.tabs {
  display: flex;
  gap: 2px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.tabs button {
  padding: 11px 14px 9px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.tabs button:hover {
  color: var(--text);
}

.tabs button[aria-selected="true"] {
  color: var(--accent-text);
  border-bottom-color: var(--accent);
}

.panel {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 14px 16px 16px;
}

.stages {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 12px;
}

.stage {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--surface-2);
}

.stage header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 4px;
}

.stage h4 {
  margin: 0 4px 0 0;
  font-size: 15px;
}

.stage .metrics {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
}

.parts {
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.parts td {
  padding: 2px 12px 2px 0;
}

.parts td:first-child {
  font-weight: 700;
}

.parts td:last-child {
  color: var(--muted);
  font-size: 13px;
}

.note {
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 8px;
}

.note.warn {
  background: var(--warning-soft);
  border: 1px solid var(--warning-border);
}

.note.ok {
  background: var(--success-soft);
  border: 1px solid var(--success-border);
  color: var(--success);
}

.details {
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.details td {
  padding: 4px 16px 4px 0;
  vertical-align: top;
}

.details td:first-child {
  color: var(--muted);
}

.details td:last-child {
  font-weight: 600;
}

.panel h4 {
  margin: 16px 0 6px;
  font-size: 14px;
}

.schematic-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px 12px;
}

.schematic-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.schematic-bar .muted {
  color: var(--muted);
  font-size: 12.5px;
}

.downloads-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.button.small {
  padding: 5px 11px;
  font-size: 13px;
}

.schematic-view {
  flex: 1;
  min-height: 260px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--sch-paper);
  touch-action: none;
  cursor: grab;
}

.schematic-panel:fullscreen {
  background: var(--surface);
  padding: 16px;
}

.schematic-view.dragging {
  cursor: grabbing;
}

.schematic-view svg {
  display: block;
  width: 100%;
  height: 100%;
}

.pcb-view {
  background: #0b1f17;
}

.pcb-view .empty {
  color: #cbd5e1;
}

.schematic-view .empty {
  padding: 16px;
}

pre.netlist {
  margin: 0;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.45;
  white-space: pre;
  overflow: auto;
  min-height: 100%;
}

.empty {
  color: var(--muted);
}

.status {
  color: var(--muted);
  font-size: 12.5px;
  padding: 0 2px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 16px);
  opacity: 0;
  pointer-events: none;
  background: var(--tooltip);
  color: var(--tooltip-text);
  padding: 9px 16px;
  border-radius: 10px;
  font-weight: 600;
  transition: opacity 0.18s, transform 0.18s;
  max-width: calc(100vw - 32px);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Narrow screens: one column, the page scrolls instead of the panels. */
@media (max-width: 980px) {
  .app {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
  }

  .sidebar {
    overflow: visible;
    padding-right: 0;
  }

  .plot-card {
    flex: none;
    min-height: 0;
  }

  .plot-wrap {
    flex: none;
    height: 340px;
  }

  .tabs-card {
    flex: none;
    min-height: 0;
  }

  .panel {
    max-height: 70vh;
  }

  .schematic-view {
    min-height: 360px;
  }
}

@media (max-width: 520px) {
  .app {
    padding: 12px;
    gap: 12px;
  }

  .actions {
    width: 100%;
  }

  .actions .button {
    flex: 1;
    justify-content: center;
  }

  .plot-wrap {
    height: 300px;
  }
}