:root {
  color-scheme: dark;
  --accent: #fda35c;
  --accent-strong: #f59e0b;
  --danger: #ff7b7b;
  --success: #62d39b;
  --warning: #ffd166;
  --bg: #080810;
  --text: #f7f2ec;
  --muted: #c8bfba;
  --subtle: rgba(247, 242, 236, 0.66);
  --line: rgba(255, 255, 255, 0.13);
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.1);
  --shadow: 0 30px 90px -50px rgba(0, 0, 0, 0.9);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 8%, rgba(253, 163, 92, 0.2), transparent 30%),
    radial-gradient(circle at 84% 12%, rgba(124, 91, 255, 0.2), transparent 34%),
    linear-gradient(135deg, #080810 0%, #11111c 58%, #080810 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 76%, white);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  transform: translateY(-160%);
  border-radius: 999px;
  background: var(--accent);
  padding: 10px 14px;
  color: #211100;
  font-weight: 850;
  text-decoration: none;
}

.skip-link:focus { transform: translateY(0); }

.playground-shell {
  display: grid;
  gap: clamp(38px, 6vw, 80px);
  padding: clamp(20px, 4vw, 56px);
}

.topbar,
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
  text-decoration: none;
}

.brand img {
  display: block;
  width: min(136px, 38vw);
  max-height: 48px;
  object-fit: contain;
}

.topnav,
.actions,
.button-row,
.execute-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.topnav a,
.status-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 8px 12px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-decoration: none;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 16px;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 850;
  text-decoration: none;
  cursor: pointer;
}

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

.button--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #211100;
}

.button--secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

main {
  display: grid;
  gap: clamp(42px, 6vw, 78px);
}

.panel,
.execute-card,
.documentation-card {
  display: grid;
  width: min(1180px, 100%);
  justify-self: center;
  gap: clamp(22px, 4vw, 42px);
}

.panel,
.execute-card {
  grid-template-columns: minmax(0, 0.82fr) minmax(300px, 1fr);
}

.hero {
  --developer-hero-min-height: min(560px, calc(100vh - 170px));
}

.panel > *,
.execute-card > *,
.upload-card,
.request-grid > *,
.response-grid > *,
.json-panel,
.measurement-panel {
  min-width: 0;
}

.status-card,
.panel,
.execute-card,
.documentation-card,
.upload-card,
.metric,
.json-panel,
.measurement-panel {
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 34px);
}

.status-card {
  display: grid;
  gap: 14px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.052em;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3rem, 6.8vw, 6.5rem);
  line-height: 0.93;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
}

h3 {
  font-size: 1.14rem;
}

p,
li,
output,
label {
  color: var(--muted);
  line-height: 1.65;
}

.lead {
  max-width: 66ch;
  margin: 26px 0 0;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.field-stack,
.request-grid,
.response-grid,
.upload-grid {
  display: grid;
  gap: 16px;
}

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

.response-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 8px;
  font-size: 0.86rem;
  font-weight: 850;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.26);
  padding: 13px 14px;
  color: var(--text);
  font: inherit;
}

.drop-zone {
  position: relative;
  border: 1px dashed rgba(253, 163, 92, 0.42);
  border-radius: 20px;
  background: rgba(253, 163, 92, 0.08);
  padding: 18px;
  text-align: center;
  cursor: pointer;
}

.drop-zone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.preview-frame {
  display: grid;
  min-height: 320px;
  aspect-ratio: 9 / 16;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #020205;
  color: var(--subtle);
  text-align: center;
}

.preview-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.validation-list {
  display: block;
  min-height: 52px;
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.24);
  padding: 12px;
  white-space: pre-wrap;
}

.inline-output,
.status-card p {
  margin: 0;
}

pre {
  overflow: auto;
  max-width: 100%;
  margin: 12px 0;
  border: 1px solid rgba(253, 163, 92, 0.2);
  border-radius: 22px;
  background: #05050a;
  padding: 18px;
  color: #fff4e8;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.progress-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.progress-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 9px 12px;
  font-weight: 850;
}

.progress-list li.is-active {
  border-color: rgba(253, 163, 92, 0.5);
  color: var(--accent);
}

.progress-list li.is-done {
  border-color: rgba(98, 211, 155, 0.45);
  color: var(--success);
}

.metric {
  display: grid;
  gap: 8px;
}

.metric span {
  color: var(--subtle);
  font-size: 0.82rem;
  font-weight: 850;
}

.metric strong {
  overflow-wrap: anywhere;
}

.metric--wide,
.measurement-panel,
.json-panel {
  grid-column: span 2;
}

.measurement-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.measurement-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.22);
  padding: 12px;
}

.measurement-card span {
  display: block;
  color: var(--subtle);
  font-size: 0.78rem;
}

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

.footer {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  color: var(--subtle);
  font-size: 0.86rem;
}

@media (max-width: 1080px) {
  .panel,
  .execute-card {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .request-grid,
  .upload-grid,
  .response-grid,
  .measurement-grid {
    grid-template-columns: 1fr;
  }

  .metric--wide,
  .measurement-panel,
  .json-panel {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}