:root {
  color-scheme: light dark;
  --bg: #f4f4f6;
  --card: #ffffff;
  --text: #111114;
  --muted: #6b6b75;
  --border: #e4e4ea;
  --accent: #111114;
  --accent-text: #ffffff;
  --warn-bg: #fff6e5;
  --warn-text: #7a4b00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c0e;
    --card: #17171b;
    --text: #f4f4f6;
    --muted: #9a9aa5;
    --border: #2a2a31;
    --accent: #f4f4f6;
    --accent-text: #111114;
    --warn-bg: #2b2210;
    --warn-text: #f3c56b;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font:
    16px/1.45 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
}

main {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 24px;
}

h1 {
  font-size: 22px;
  margin: 0 0 8px;
}

p {
  margin: 0 0 12px;
  color: var(--muted);
}

ul {
  margin: 0 0 16px;
  padding-left: 20px;
}

li {
  margin-bottom: 6px;
}

.warning {
  background: var(--warn-bg);
  color: var(--warn-text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 20px;
}

.redirect {
  font-size: 13px;
  margin-bottom: 16px;
  word-break: break-word;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.provider-button {
  display: inline-flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.provider-icon {
  width: 20px;
  height: 20px;
  flex: none;
}

@media (prefers-color-scheme: dark) {
  .brand img {
    filter: brightness(0) invert(1);
  }
}

.actions {
  display: grid;
  gap: 10px;
}

button {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 12px;
  padding: 13px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

.account {
  font-size: 14px;
  margin-top: 18px;
  text-align: center;
}

.link {
  border: none;
  padding: 0;
  color: var(--muted);
  font-weight: 400;
  text-decoration: underline;
}

.grant {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}

.grant small {
  display: block;
  color: var(--muted);
}

.grant button {
  padding: 8px 12px;
}

.error {
  color: #d23c3c;
}

noscript {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  text-align: center;
}