:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2f3a;
  --text: #e6e9ef;
  --muted: #9aa3b2;
  --accent: #7aa2f7;
  --good: #9ece6a;
  --bad: #f7768e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

h1 { font-size: 1.6rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 28px 0 8px; }
p { margin: 8px 0; color: var(--muted); }
code {
  background: #0b0d12;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.88em;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 14px 0;
}

.panel h2 { margin-top: 0; }

.step { margin-bottom: 6px; color: var(--text); }
.step b { color: var(--accent); }

.redirect-uri {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  background: #0b0d12;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  margin: 8px 0;
  word-break: break-all;
}

button {
  background: var(--accent);
  color: #0f1115;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 500;
  padding: 6px 12px;
  font-size: 0.85rem;
}

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

input[type="text"] {
  width: 100%;
  background: #0b0d12;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  margin: 6px 0 10px;
}

.token-box {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.45;
  background: #0b0d12;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  margin: 10px 0;
  word-break: break-all;
  user-select: all;
}

.token-box.placeholder { color: var(--muted); }

.success { color: var(--good); font-weight: 600; }
.error { color: var(--bad); }
.muted { color: var(--muted); font-size: 0.9rem; }

ol { margin: 8px 0; padding-left: 22px; }
li { margin: 4px 0; color: var(--muted); }

hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 40px;
}