/* "Try Gossamer" playground - refined-dark theme.
 * Scoped under .gp so it can be dropped into any page without
 * colliding with host styles. */

.gp {
  --gp-bg: #000000;
  --gp-bg-soft: #0b0d11;
  --gp-code-bg: #0f1115;
  --gp-text: #f3f4f6;
  --gp-muted: #9ca3af;
  --gp-accent: #38bdf8;
  --gp-accent-light: #7dd3fc;
  --gp-border: #1f2937;
  --gp-amber: #fbbf24;
  --gp-red: #f87171;

  display: flex;
  flex-direction: column;
  background: var(--gp-code-bg);
  border: 1px solid var(--gp-border);
  border-radius: 12px;
  overflow: hidden;
  color: var(--gp-text);
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  /* The forward pipe `|>` and similar operators must render as separate
     glyphs, never a single ligature. These properties inherit, so the
     CodeMirror editor and the output pane pick them up. */
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
}

.gp *,
.gp *::before,
.gp *::after {
  box-sizing: border-box;
}

/* ---- Toolbar ---- */
.gp-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  background: var(--gp-bg-soft);
  border-bottom: 1px solid var(--gp-border);
}

.gp-title {
  font-family: "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--gp-muted);
}

.gp-actions {
  display: flex;
  gap: 0.45rem;
}

/* ---- Buttons (pill-shaped) ---- */
.gp-btn {
  appearance: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 999px;
  padding: 0.45rem 1.05rem;
  border: 1px solid transparent;
  transition: background 120ms ease, color 120ms ease,
    border-color 120ms ease, transform 120ms ease, opacity 120ms ease;
}

.gp-btn:focus-visible {
  outline: 2px solid var(--gp-accent);
  outline-offset: 2px;
}

.gp-btn:disabled {
  opacity: 0.55;
  cursor: progress;
}

.gp-run {
  color: #04121b;
  background: var(--gp-accent);
  border-color: var(--gp-accent);
}

.gp-run:hover:not(:disabled) {
  background: var(--gp-accent-light);
  border-color: var(--gp-accent-light);
  transform: translateY(-1px);
}

.gp-reset {
  color: var(--gp-accent-light);
  background: transparent;
  border-color: var(--gp-border);
}

.gp-reset:hover:not(:disabled) {
  color: var(--gp-accent);
  border-color: var(--gp-accent);
  background: rgba(56, 189, 248, 0.08);
}

/* ---- Editor host ---- */
.gp-editor {
  min-height: 84px;
  background: var(--gp-code-bg);
}

.gp-editor .cm-editor {
  background: var(--gp-code-bg);
}

.gp-editor .cm-editor.cm-focused {
  outline: none;
}

/* ---- Output ---- */
.gp-output-wrap {
  border-top: 1px solid var(--gp-border);
  background: var(--gp-bg-soft);
}

.gp-output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border-bottom: 1px solid var(--gp-border);
}

.gp-output-label {
  font-family: "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gp-muted);
}

.gp-status {
  font-size: 0.76rem;
  color: var(--gp-accent-light);
  min-height: 1em;
}

.gp-output {
  margin: 0;
  padding: 0.75rem 0.95rem;
  min-height: 48px;
  max-height: 280px;
  overflow: auto;
  font-family: "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--gp-text);
  background: var(--gp-code-bg);
}

.gp-output:focus-visible {
  outline: 2px solid var(--gp-accent);
  outline-offset: -2px;
}

.gp-stdout {
  color: var(--gp-text);
}

.gp-stderr {
  color: var(--gp-amber);
}

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

.gp-empty {
  color: var(--gp-muted);
  font-style: italic;
}

/* ---- Diagnostics ---- */
.gp-diags {
  list-style: none;
  margin: 0;
  padding: 0.4rem 0.65rem 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.gp-diags[hidden] {
  display: none;
}

.gp-diag {
  font-family: "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  font-size: 0.76rem;
  line-height: 1.45;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  border-left: 3px solid var(--gp-border);
  background: var(--gp-code-bg);
  white-space: pre-wrap;
  word-break: break-word;
}

.gp-diag-error {
  border-left-color: var(--gp-red);
  color: var(--gp-red);
}

.gp-diag-warning {
  border-left-color: var(--gp-amber);
  color: var(--gp-amber);
}

/* ---- Responsive (works to 360px) ---- */
@media (max-width: 420px) {
  .gp-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  .gp-actions {
    justify-content: flex-end;
  }
  .gp-output {
    font-size: 0.78rem;
  }
}

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