:root {
  --page-bg: #f3f2ee;
  --paper: #fbfaf7;
  --paper-alt: #f6f5f0;
  --panel-bg: #fffefa;
  --panel-border: #c8c4ba;
  --rule: #ddd8cd;
  --text: #20232a;
  --muted: #5e6670;
  --subtle: #77705f;
  --accent: #7a2e2e;
  --accent-soft: #f2e4df;
  --danger-soft: #f5e6e1;
  --danger-text: #7a2e2e;
  --shadow: 0 1px 2px rgba(26, 26, 26, 0.08);
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(rgba(32, 35, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 35, 42, 0.025) 1px, transparent 1px),
    var(--page-bg);
  background-size: 28px 28px;
  color: var(--text);
  font-family: var(--sans);
}

.page {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 42px 0 64px;
}

.hero {
  max-width: 780px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--panel-border);
}

.section-heading h2,
.diagnostics-panel__header h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 1.7vw, 1.55rem);
  font-weight: 600;
  line-height: 1.15;
}

.section-eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--subtle);
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--subtle);
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 4.8vw, 4.6rem);
  font-weight: 600;
  line-height: 1;
}

.lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 1.03rem;
  line-height: 1.65;
  color: var(--muted);
}

.workspace {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 18px;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
}

.workspace-tabs {
  display: inline-grid;
  grid-auto-flow: column;
  gap: 0;
  padding: 0;
  margin-bottom: 18px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--paper-alt);
}

.workspace-tab {
  border: 0;
  border-radius: 0;
  padding: 10px 16px;
  background: transparent;
  color: var(--muted);
  font: 600 0.78rem/1.2 var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 120ms ease, color 120ms ease;
}

.workspace-tab + .workspace-tab {
  border-left: 1px solid var(--panel-border);
}

.workspace-tab:hover,
.workspace-tab:focus-visible {
  background: #efede7;
  color: var(--text);
  outline: none;
}

.workspace-tab--active {
  background: var(--panel-bg);
  color: var(--text);
}

.workspace-shared,
.workspace-panel {
  display: grid;
  gap: 16px;
}

.workspace-shared {
  margin-bottom: 24px;
}

.workspace-panel + .workspace-panel,
.workspace-panel + .workspace-panel[hidden] + .workspace-panel {
  margin-top: 0;
}

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

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

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

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

.control-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
}

.control-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.control-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.control-card output {
  font-family: var(--mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--text);
}

.control-card select,
.control-card input[type="range"],
.control-card input[type="text"],
.control-card input[type="number"] {
  width: 100%;
  margin: 0;
}

.control-card select,
.control-card input[type="text"],
.control-card input[type="number"] {
  appearance: none;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 9px 10px;
  background: #ffffff;
  color: var(--text);
  font: 0.95rem/1.3 var(--sans);
}

.control-card input[type="range"] {
  accent-color: var(--accent);
}

.control-card[hidden] {
  display: none;
}

.control-card--action {
  align-content: space-between;
}

.action-button {
  border: 1px solid #5f2424;
  border-radius: 4px;
  padding: 10px 12px;
  background: var(--accent);
  color: #fffefa;
  font: 600 0.82rem/1.2 var(--sans);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
}

.action-button:hover,
.action-button:focus-visible {
  background: #682727;
  outline: none;
}

.action-button:disabled {
  cursor: progress;
  opacity: 0.72;
}

.generated-layout {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.generated-content {
  display: grid;
  gap: 18px;
}

.diagnostics-panel {
  display: grid;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: var(--paper-alt);
}

.diagnostics-panel__header {
  display: grid;
  gap: 8px;
}

.diagnostics-status {
  margin: 0;
  line-height: 1.5;
  color: var(--muted);
}

.diagnostics-summary {
  display: grid;
  gap: 10px;
}

.diagnostics-card {
  display: grid;
  gap: 5px;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--panel-bg);
}

.diagnostics-card__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

.diagnostics-card__value {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--text);
}

.diagnostics-warnings {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.diagnostics-warning {
  padding: 10px 12px;
  border: 1px solid #d7b4ac;
  border-radius: 4px;
  background: var(--danger-soft);
  color: var(--danger-text);
  line-height: 1.4;
}

.source-settings-panel {
  display: grid;
  gap: 14px;
  padding-top: 6px;
  border-top: 1px solid var(--rule);
}

.source-settings-panel__header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.source-settings-status {
  margin: 0;
  line-height: 1.5;
  color: var(--muted);
}

.source-settings-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 0.9rem;
}

.source-settings-toggle input {
  accent-color: var(--accent);
}

.ghost-button {
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 8px 12px;
  background: var(--panel-bg);
  color: var(--text);
  font: 600 0.82rem/1.2 var(--sans);
  cursor: pointer;
}

.ghost-button:disabled {
  opacity: 0.52;
  cursor: default;
}

.source-settings-global,
.source-settings-slots {
  display: grid;
  gap: 12px;
}

.source-settings-group {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--panel-bg);
}

.source-settings-group h4,
.slot-card__summary strong,
.slot-card__content h4 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
}

.source-settings-grid,
.slot-card__meta,
.slot-card__targets,
.slot-card__ranges {
  display: grid;
  gap: 10px;
}

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

.setting-field,
.target-chip {
  display: grid;
  gap: 6px;
}

.setting-field label,
.target-chip__label,
.slot-card__meta-label,
.range-row__label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.setting-field input,
.range-row input {
  width: 100%;
  appearance: none;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 9px 10px;
  background: #ffffff;
  color: var(--text);
  font: 0.95rem/1.3 var(--sans);
}

.slot-card {
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--panel-bg);
  overflow: hidden;
}

.slot-card[open] {
  background: #ffffff;
}

.slot-card__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
  cursor: pointer;
  list-style: none;
}

.slot-card__summary::-webkit-details-marker {
  display: none;
}

.slot-card__summary span {
  color: var(--muted);
  font-size: 0.82rem;
}

.slot-card__content {
  display: grid;
  gap: 12px;
  padding: 0 14px 14px;
}

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

.slot-card__meta-value,
.target-chip__value {
  word-break: break-word;
  color: var(--text);
}

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

.slot-card__ranges {
  gap: 12px;
}

.range-section {
  display: grid;
  gap: 8px;
}

.range-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(80px, 1fr) minmax(80px, 1fr);
  gap: 8px;
  align-items: center;
}

.range-row__inputs {
  display: contents;
}

.text-preview-panel {
  display: grid;
  gap: 12px;
}

.text-preview-panel__header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
}

.text-preview-panel__header h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
}

.text-preview-mode {
  display: inline-grid;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.text-preview-mode select {
  appearance: none;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 9px 10px;
  background: #ffffff;
  color: var(--text);
  font: 0.95rem/1.3 var(--sans);
  letter-spacing: normal;
  text-transform: none;
}

.canvas-frame {
  overflow: auto;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background:
    linear-gradient(rgba(32, 35, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 35, 42, 0.025) 1px, transparent 1px),
    var(--paper-alt);
  background-size: 24px 24px;
  padding: 18px;
}

#existing-canvas,
#generated-canvas,
#generated-text-preview {
  width: 100%;
  min-height: 600px;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  background: rgba(255, 254, 250, 0.86);
}

#generated-text-preview {
  min-height: 380px;
}

#existing-canvas svg,
#generated-canvas svg,
#generated-text-preview svg {
  display: block;
  max-width: 100%;
}

#existing-canvas svg [data-glyph-tooltip="true"],
#generated-canvas svg [data-glyph-tooltip="true"] {
  cursor: help;
}

@media (max-width: 980px) {
  .generated-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .page {
    width: min(100vw - 20px, 1080px);
    padding-top: 28px;
    padding-bottom: 40px;
  }

  .workspace {
    padding: 12px;
    border-radius: 6px;
  }

  .workspace-controls {
    grid-template-columns: 1fr;
  }

  .panel-controls,
  .panel-controls--generated {
    grid-template-columns: 1fr;
  }

  .canvas-frame {
    padding: 12px;
  }

  .workspace-tabs {
    width: 100%;
    grid-auto-flow: row;
  }

  .source-settings-grid,
  .slot-card__meta,
  .slot-card__targets,
  .range-row {
    grid-template-columns: 1fr;
  }

  .source-settings-panel__header,
  .text-preview-panel__header,
  .slot-card__summary {
    align-items: start;
  }

  .text-preview-panel__header {
    flex-direction: column;
  }
}