:root {
  color-scheme: dark;
  --bg: #282828;
  --bg-hard: #1d2021;
  --fg: #ebdbb2;
  --fg-soft: #d5c4a1;
  --muted: #a89984;
  --line: #928374;
  --red: #fb4934;
  --green: #b8bb26;
  --yellow: #fabd2f;
  --blue: #83a598;
  --aqua: #8ec07c;
  --purple: #d3869b;
  --code: #32302f;
  font-family: "Aptos", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  width: min(1220px, calc(100% - 24px));
  margin: 0 auto;
  padding: 18px 0 42px;
}

.intro {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0;
  color: var(--yellow);
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  color: var(--fg);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
}

h2 {
  margin: 0 0 8px;
  color: var(--yellow);
  font-size: clamp(1.35rem, 3vw, 2.2rem);
  line-height: 1.05;
}

h3 {
  margin: 0;
  color: var(--bg-hard);
  font-size: 1.05rem;
  text-transform: uppercase;
}

.lede {
  max-width: 82ch;
  margin: 0;
  color: var(--fg-soft);
  line-height: 1.45;
}

.workspace {
  display: grid;
  gap: 14px;
}

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

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--bg-hard);
}

.field:last-child {
  border-right: 1px solid var(--line);
}

.field-wide {
  grid-column: 1 / -1;
}

.is-hidden {
  display: none;
}

.field span {
  color: var(--aqua);
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.86rem;
  font-weight: 800;
  text-transform: uppercase;
}

textarea,
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--code);
  color: var(--fg);
  padding: 10px;
}

textarea:focus,
input:focus,
.tab:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

.code-input,
code {
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
}

.is-invalid {
  border-color: var(--red);
  background: #3c1f1e;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.tab {
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-weight: 900;
}

.tab:last-child {
  border-right: 1px solid var(--line);
}

.tab:hover {
  background: #3c3836;
  color: var(--yellow);
}

.tab.is-active {
  background: var(--yellow);
  color: var(--bg-hard);
}

.mode-output {
  padding: 0;
}

.mode-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.45fr);
  gap: 16px;
  align-items: stretch;
  margin-bottom: 16px;
}

.mode-header p {
  max-width: 76ch;
  margin: 0;
  color: var(--fg-soft);
  line-height: 1.45;
}

.mode-header code {
  display: flex;
  align-items: center;
  border-left: 2px solid var(--yellow);
  background: var(--bg-hard);
  color: var(--yellow);
  padding: 12px;
  font-weight: 900;
  white-space: normal;
}

.summary-grid,
.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.warning,
.status,
.error-box {
  margin: 14px 0;
  border-left: 2px solid var(--aqua);
  background: var(--bg-hard);
  padding: 10px 12px;
  color: var(--fg);
}

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

.block-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.block-row,
.gcm-auth {
  border: 1px solid var(--line);
  background: var(--bg-hard);
}

.block-title,
.auth-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: var(--green);
  color: var(--bg-hard);
  padding: 10px 12px;
}

.block-title span,
.auth-title span {
  color: var(--bg-hard);
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-weight: 900;
}

.step-grid {
  padding: 10px;
}

.value-tile {
  min-width: 0;
  border: 1px solid rgba(146, 131, 116, 0.55);
  background: var(--bg);
  padding: 10px;
}

.value-tile span {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.value-tile code {
  display: block;
  color: var(--fg);
  font-size: 0.86rem;
  line-height: 1.45;
  word-break: break-all;
}

@media (max-width: 820px) {
  .shell {
    width: min(100% - 16px, 1220px);
    padding-top: 10px;
  }

  .controls,
  .mode-header,
  .summary-grid,
  .step-grid {
    grid-template-columns: 1fr;
  }

  .field {
    border-right: 1px solid var(--line);
  }

  .tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .tab {
    border-right: 1px solid var(--line);
  }

  .mode-output {
    padding: 10px;
  }

  .value-tile {
    padding: 9px;
  }
}