:root {
  color-scheme: light dark;
  --bg: #f2f6fb;
  --bg-strong: #e7eef8;
  --surface: #ffffff;
  --surface-strong: #eff4fb;
  --text: #101b2b;
  --muted: #536074;
  --accent: #2a6fd6;
  --accent-strong: #1b4f9a;
  --border: #d7e1ef;
  --shadow: 0 30px 70px rgba(9, 18, 33, 0.12);
  --focus: rgba(42, 111, 214, 0.25);
  --grid: rgba(12, 18, 35, 0.05);
  --action-primary-bg: linear-gradient(135deg, #3a86ff, #2a6fd6);
  --action-primary-text: #f5f8ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b111a;
    --bg-strong: #0f1724;
    --surface: #141e2c;
    --surface-strong: #1a2536;
    --text: #e6edf7;
    --muted: #9fb0c7;
    --accent: #61a8ff;
    --accent-strong: #2f6bd1;
    --border: #233049;
    --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
    --focus: rgba(97, 168, 255, 0.25);
    --grid: rgba(255, 255, 255, 0.05);
    --action-primary-bg: linear-gradient(135deg, #6cb2ff, #3a7de0);
    --action-primary-text: #071018;
  }
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f2f6fb;
  --bg-strong: #e7eef8;
  --surface: #ffffff;
  --surface-strong: #eff4fb;
  --text: #101b2b;
  --muted: #536074;
  --accent: #2a6fd6;
  --accent-strong: #1b4f9a;
  --border: #d7e1ef;
  --shadow: 0 30px 70px rgba(9, 18, 33, 0.12);
  --focus: rgba(42, 111, 214, 0.25);
  --grid: rgba(12, 18, 35, 0.05);
  --action-primary-bg: linear-gradient(135deg, #3a86ff, #2a6fd6);
  --action-primary-text: #f5f8ff;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b111a;
  --bg-strong: #0f1724;
  --surface: #141e2c;
  --surface-strong: #1a2536;
  --text: #e6edf7;
  --muted: #9fb0c7;
  --accent: #61a8ff;
  --accent-strong: #2f6bd1;
  --border: #233049;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --focus: rgba(97, 168, 255, 0.25);
  --grid: rgba(255, 255, 255, 0.05);
  --action-primary-bg: linear-gradient(135deg, #6cb2ff, #3a7de0);
  --action-primary-text: #071018;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(900px 520px at 8% 6%, rgba(66, 149, 255, 0.25), transparent 60%),
    radial-gradient(700px 520px at 92% 12%, rgba(28, 78, 160, 0.2), transparent 60%),
    linear-gradient(160deg, var(--bg), var(--bg-strong));
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 48px 20px 64px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  opacity: 0.35;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  inset: -35% auto auto -10%;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle at center, rgba(58, 134, 255, 0.3), transparent 70%);
  filter: blur(20px);
  opacity: 0.8;
  pointer-events: none;
  animation: drift 18s ease-in-out infinite;
  z-index: 0;
}

@keyframes drift {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(40px, 20px, 0);
  }
  100% {
    transform: translate3d(0, 0, 0);
  }
}

.shell {
  width: min(1020px, 100%);
  display: grid;
  gap: 20px;
  position: relative;
  z-index: 1;
}

.brand {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.brand-copy {
  max-width: 760px;
}

.brand-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 12px;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 600;
}

.brand-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.brand-subtitle code {
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 0.9em;
}

.brand-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.repo-link {
  appearance: none;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.repo-link:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  color: var(--accent);
}

.reset-button {
  background: var(--surface-strong);
}

.card,
.output,
.settings-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.card {
  padding: 20px;
  display: grid;
  gap: 16px;
}

.panel {
  display: grid;
  gap: 16px;
}

.output {
  padding: 22px;
  display: grid;
  gap: 14px;
}

.output-value {
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: clamp(15px, 2vw, 18px);
  word-break: break-word;
  white-space: pre-wrap;
  line-height: 1.55;
  cursor: pointer;
  max-height: 360px;
  overflow: auto;
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 14px;
  background: var(--surface-strong);
}

.output-value.is-single {
  max-height: none;
}

.output-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 12px 24px;
  font-size: 13px;
  color: var(--muted);
}

.output-meta strong {
  color: var(--text);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.action-button {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.action-button.primary {
  background: var(--action-primary-bg);
  color: var(--action-primary-text);
  border-color: transparent;
  box-shadow: 0 14px 28px rgba(9, 18, 33, 0.25);
}

.action-button:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: 0 12px 24px rgba(42, 111, 214, 0.2);
}

.action-button svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.status {
  min-height: 18px;
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

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

.field--center {
  text-align: center;
}

.field span {
  font-weight: 600;
}

.field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.field small {
  color: var(--muted);
  font-size: 12px;
}

.template-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preset-chip {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--muted);
  border-radius: 999px;
  padding: 4px 9px;
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 12px;
  line-height: 1.2;
  cursor: pointer;
  transition: border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.preset-chip:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-1px);
}

textarea,
input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 14px;
  padding: 12px;
  outline: none;
}

textarea {
  min-height: 180px;
  resize: vertical;
  line-height: 1.45;
}

textarea:focus,
input:focus,
.preset-chip:focus,
.format-button:focus,
.theme-button:focus,
.action-button:focus,
.repo-link:focus {
  box-shadow: 0 0 0 3px var(--focus);
}

.settings-strip {
  width: min(980px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 16px;
}

.format-switch,
.theme-switch {
  display: grid;
  gap: 4px;
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  width: min(420px, 100%);
  margin: 0 auto;
}

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

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

.format-button,
.theme-button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  border-radius: 8px;
  padding: 10px;
  font-weight: 600;
  cursor: pointer;
}

.format-button.is-active,
.theme-button.is-active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.syntax-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.syntax-list code {
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 0.92em;
}

.doc-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.doc-footer a {
  color: inherit;
}

@media (max-width: 900px) {
  body {
    padding: 24px 14px 40px;
  }

  .brand {
    flex-direction: column;
    align-items: flex-start;
  }

  .settings-strip {
    grid-template-columns: 1fr;
  }

  .action-row {
    justify-content: stretch;
  }

  .action-button {
    width: 100%;
    justify-content: center;
  }
}