:root {
  color-scheme: dark;
  --background: #080b10;
  --surface: #0f141c;
  --surface-soft: #141b25;
  --border: #293241;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --amber: #fbbf24;
  --amber-soft: rgba(251, 191, 36, 0.12);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(251, 191, 36, 0.08), transparent 30rem),
    linear-gradient(rgba(148, 163, 184, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.025) 1px, transparent 1px),
    var(--background);
  background-size: auto, 32px 32px, 32px 32px, auto;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page {
  width: min(100% - 2rem, 980px);
  margin: 0 auto;
  padding: 5rem 0;
}

.hero {
  margin-bottom: 2rem;
}

.eyebrow {
  margin-bottom: 0.75rem;
  color: var(--amber);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

a {
  text-decoration: none;
  color: var(--text);
}

.hero p {
  max-width: 680px;
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.key-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(15, 20, 28, 0.94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.key-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9rem;
}

.key-card__header > div {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--amber);
  box-shadow: 0 0 14px rgba(251, 191, 36, 0.75);
}

.copy-button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid #3a4656;
  border-radius: 7px;
  background: #1b2430;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.copy-button:hover {
  border-color: var(--amber);
  background: var(--amber-soft);
  color: var(--amber);
}

.copy-button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.copy-button svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.code-wrapper {
  max-height: 68vh;
  overflow: auto;
  scrollbar-color: #475569 #111827;
}

pre {
  min-width: max-content;
  margin: 0;
  padding: 1.5rem;
}

code {
  color: #d8dee9;
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88rem;
  line-height: 1.65;
}

.hint {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.hint code {
  color: var(--amber);
}

.toast {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  padding: 0.8rem 1rem;
  border: 1px solid rgba(251, 191, 36, 0.35);
  border-radius: 9px;
  background: #151b24;
  color: var(--amber);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.error {
  color: #fca5a5;
}

.button-group {
    display: flex;
    gap: 0.5rem;
}

@media (max-width: 640px) {
  .page {
    padding: 3rem 0;
  }

  .key-card__header {
    align-items: flex-start;
  }

  .copy-button span {
    display: none;
  }

  pre {
    padding: 1rem;
  }

  code {
    font-size: 0.78rem;
  }
}