* { box-sizing: border-box; }
:root {
  --bg: #0a0c10; --surface: #11141b; --surface-2: #161a23;
  --border: #232938; --border-strong: #323b52;
  --text: #e8ecf3; --text-2: #a3abbc; --text-3: #6d7589;
  --accent: #7c8cff; --accent-strong: #5b6ae8; --accent-soft: rgba(124, 140, 255, 0.12);
}
body {
  margin: 0; min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(circle at 20% -10%, rgba(124, 140, 255, 0.13), transparent 42%), var(--bg);
  color: var(--text); display: flex; align-items: center; justify-content: center; padding: 24px;
}
.card { width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45); }
.brand { font-size: 17px; font-weight: 800; letter-spacing: -0.4px; margin-bottom: 18px; }
.brand span { color: var(--accent); }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 11px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 12.5px; font-weight: 700; margin-bottom: 14px; }
h1 { margin: 0 0 8px; font-size: 26px; letter-spacing: -0.03em; }
.subtitle { margin: 0 0 20px; color: var(--text-2); line-height: 1.55; font-size: 14px; }
.notice { margin: 0 0 16px; padding: 12px 14px; border-radius: 10px; background: rgba(251, 191, 36, 0.09); border: 1px solid rgba(251, 191, 36, 0.28); color: #fde68a; font-size: 13.5px; line-height: 1.5; }
.info { margin: 0 0 16px; padding: 12px 14px; border-radius: 10px; background: var(--accent-soft); border: 1px solid rgba(124, 140, 255, 0.3); color: #c3ccff; font-size: 13.5px; line-height: 1.5; word-break: break-word; }
.error { margin: 0 0 16px; padding: 12px 14px; border-radius: 10px; background: rgba(248, 113, 113, 0.1); border: 1px solid rgba(248, 113, 113, 0.35); color: #fecaca; font-size: 13.5px; line-height: 1.5; }
label { display: block; margin: 14px 0 6px; color: var(--text-2); font-size: 13px; font-weight: 700; }
input { width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text); font-size: 15px; outline: none; transition: border-color 0.15s, box-shadow 0.15s; }
input:focus { border-color: var(--accent-strong); box-shadow: 0 0 0 3px var(--accent-soft); }
input.code { font-size: 20px; letter-spacing: 0.18em; text-align: center; }
input.code::placeholder { letter-spacing: normal; font-size: 15px; }
button { width: 100%; margin-top: 20px; padding: 13px 16px; border: 0; border-radius: 10px; background: var(--accent-strong); color: #fff; font-size: 15px; font-weight: 700; cursor: pointer; transition: background 0.15s; }
button:hover { background: var(--accent); }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent-strong); outline-offset: 2px; }
.links { margin-top: 20px; display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; color: var(--text-3); font-size: 14px; }
a { color: var(--accent); text-decoration: none; font-weight: 700; }
a:hover { text-decoration: underline; }
.footer { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 12px; text-align: center; line-height: 1.5; }