:root {
  color-scheme: dark;
  --background: #111827;
  --card: #1f2937;
  --card-strong: #273449;
  --accent: #0ea5a4;
  --text: #f8fafc;
  --muted: #94a3b8;
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --line: rgb(148 163 184 / 22%);
  --shadow: 0 20px 70px rgb(0 0 0 / 30%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

button,
input,
select {
  font: inherit;
}

.button,
button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
  padding: 0 16px;
  text-decoration: none;
}

.button:hover,
button:hover {
  filter: brightness(1.08);
}

.button:disabled,
button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  filter: none;
}

.button.secondary,
button.secondary {
  border: 1px solid var(--line);
  background: var(--card);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.brand img {
  width: 44px;
  height: 44px;
}

.brand strong,
.brand span {
  display: block;
}

.brand span {
  color: var(--muted);
}

.error-message {
  border: 1px solid rgb(239 68 68 / 45%);
  border-radius: 8px;
  background: rgb(239 68 68 / 12%);
  color: #fecaca;
  padding: 16px;
}

.success-message {
  border: 1px solid rgb(34 197 94 / 45%);
  border-radius: 8px;
  background: rgb(34 197 94 / 12%);
  color: #bbf7d0;
  padding: 14px 16px;
}