:root {
  --bg: #0b0f17;
  --bg-elevated: #121826;
  --bg-sunken: #080b12;
  --border: #1f2937;
  --border-strong: #2d3a4f;
  --text: #e6edf7;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  --accent: #4f9cf9;
  --accent-soft: rgba(79, 156, 249, 0.12);
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --radius: 12px;
  --radius-sm: 8px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fb;
    --bg-elevated: #ffffff;
    --bg-sunken: #eef2f7;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --text: #0f172a;
    --text-muted: #475569;
    --text-faint: #94a3b8;
    --accent: #2563eb;
    --accent-soft: rgba(37, 99, 235, 0.08);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.875em;
}

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

.shell {
  width: min(1120px, 100% - 3rem);
  margin-inline: auto;
}

/* ---------- masthead ---------- */

.masthead {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--accent-soft), transparent);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.badge {
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.masthead h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.tagline {
  max-width: 68ch;
  margin: 0.85rem 0 0;
  color: var(--text-muted);
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px;
  margin: 2rem 0 0;
  padding: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.facts > div {
  padding: 0.85rem 1rem;
  background: var(--bg-elevated);
}

.facts dt {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.facts dd {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ---------- panels ---------- */

main {
  padding: 2.5rem 0 4rem;
  display: grid;
  gap: 2.5rem;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  overflow: hidden;
}

.panel-head {
  padding: 1.4rem 1.6rem;
  border-bottom: 1px solid var(--border);
}

.panel-head h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 620;
  letter-spacing: -0.01em;
}

.panel-head p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

#playground {
  padding: 1.6rem;
}

/* ---------- dropzone ---------- */

.dropzone {
  display: grid;
  place-items: center;
  gap: 0.35rem;
  padding: 2.5rem 1.5rem;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-sunken);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}

.dropzone.is-dragging {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-soft);
}

.dropzone.has-file {
  border-style: solid;
  border-color: var(--border-strong);
}

.dropzone-icon {
  width: 30px;
  height: 30px;
  color: var(--text-faint);
}

.dropzone-title {
  margin: 0;
  font-weight: 550;
}

.dropzone-hint {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.82rem;
}

/* ---------- controls ---------- */

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 1.1rem;
  margin-top: 1.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 550;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.field select,
.field input[type="text"],
.field input[type="number"] {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-sunken);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}

.field select:focus,
.field input:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
}

.field-hint {
  color: var(--text-faint);
  font-size: 0.76rem;
}

.field-check {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  align-self: end;
  padding-bottom: 0.5rem;
  font-size: 0.88rem;
}

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

/* ---------- actions ---------- */

.actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

button {
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.primary {
  padding: 0.6rem 1.4rem;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.primary:not(:disabled):hover {
  filter: brightness(1.1);
}

.ghost {
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
}

.ghost:hover {
  color: var(--text);
  border-color: var(--text-faint);
}

.status {
  color: var(--text-muted);
  font-size: 0.86rem;
}

.status.is-error {
  color: var(--danger);
}

.status.is-busy::after {
  content: "";
  display: inline-block;
  width: 11px;
  height: 11px;
  margin-left: 0.5rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  vertical-align: -1px;
  animation: spin 0.7s linear infinite;
}

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

/* ---------- curl ---------- */

.curl-block {
  margin: 0 1.6rem 1.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.curl-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.85rem;
  background: var(--bg-sunken);
  border-bottom: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.copy {
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: none;
  letter-spacing: 0;
}

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

.curl-block pre {
  margin: 0;
  padding: 0.85rem;
  overflow-x: auto;
  background: var(--bg-sunken);
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- result ---------- */

.result {
  margin: 0 1.6rem 1.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.verdict {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1.1rem 1.3rem;
  background: var(--bg-sunken);
  border-bottom: 1px solid var(--border);
}

.verdict-pct {
  font-size: 1.9rem;
  font-weight: 680;
  letter-spacing: -0.03em;
  color: var(--success);
  line-height: 1;
}

.verdict-pct.is-neutral {
  color: var(--text-muted);
}

.verdict-detail {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.verdict-meta {
  margin-left: auto;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-family: var(--mono);
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}

@media (max-width: 720px) {
  .compare {
    grid-template-columns: 1fr;
  }
}

.side {
  display: flex;
  flex-direction: column;
  background: var(--bg-elevated);
}

.side-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.side-label {
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.side-size {
  font-weight: 620;
  font-variant-numeric: tabular-nums;
}

.preview {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: 1rem;
  background: var(--bg-sunken);
}

.preview img {
  max-width: 100%;
  max-height: 340px;
  border-radius: 6px;
  object-fit: contain;
}

.preview iframe {
  width: 100%;
  height: 340px;
  border: 0;
  border-radius: 6px;
  background: #fff;
}

.preview-fallback {
  color: var(--text-faint);
  font-size: 0.85rem;
  text-align: center;
}

.side-foot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--border);
}

.url-input {
  flex: 1;
  min-width: 0;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-sunken);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.74rem;
  text-overflow: ellipsis;
}

.details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
}

.details > div {
  padding: 0.7rem 1rem;
  background: var(--bg-elevated);
}

.details dt {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.details dd {
  margin: 0.25rem 0 0;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.warnings {
  margin: 0;
  padding: 0.9rem 1.3rem;
  border-top: 1px solid var(--border);
  background: rgba(251, 191, 36, 0.08);
  color: var(--warning);
  font-size: 0.85rem;
  list-style: none;
}

.warnings li + li {
  margin-top: 0.4rem;
}

.error-box {
  padding: 1.1rem 1.3rem;
  color: var(--danger);
  font-size: 0.9rem;
}

.error-box strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* ---------- swagger overrides ---------- */

#openapi-reference {
  padding: 0.5rem 0 1rem;
}

#openapi-reference .swagger-ui .topbar,
#openapi-reference .swagger-ui .info .title small,
#openapi-reference .swagger-ui .scheme-container {
  display: none;
}

#openapi-reference .swagger-ui .info {
  margin: 1.5rem 0;
}

#openapi-reference .swagger-ui .wrapper {
  padding: 0 1.6rem;
  max-width: none;
}

@media (prefers-color-scheme: dark) {
  /* Swagger UI ships a light theme only; invert it and re-invert media so it fits the page. */
  #openapi-reference .swagger-ui {
    filter: invert(0.92) hue-rotate(180deg);
  }

  #openapi-reference .swagger-ui img,
  #openapi-reference .swagger-ui svg {
    filter: invert(1) hue-rotate(180deg);
  }
}

.footer {
  padding-bottom: 3rem;
  color: var(--text-faint);
  font-size: 0.82rem;
}

.footer p {
  margin: 0;
  max-width: 80ch;
}