:root {
  --bg0: #071018;
  --bg1: #0e1a28;
  --ink: #e8f0f7;
  --muted: #8aa0b5;
  --accent: #3ecf8e;
  --accent-2: #f0b429;
  --danger: #ef6b6b;
  --line: rgba(232, 240, 247, 0.12);
  --panel: rgba(10, 20, 32, 0.82);
  --font-display: "Sora", "Segoe UI", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; min-height: 100dvh; }
body {
  padding-bottom: env(safe-area-inset-bottom, 0px);
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 15% -10%, rgba(62, 207, 142, 0.16), transparent 55%),
    radial-gradient(900px 600px at 90% 10%, rgba(240, 180, 41, 0.12), transparent 50%),
    linear-gradient(165deg, var(--bg0), var(--bg1) 55%, #050a10);
}
a { color: inherit; }
.skip {
  position: absolute; left: -999px; top: 0;
}
.skip:focus { left: 8px; z-index: 50; background: #111; padding: 8px; }

.shell { min-height: 100vh; display: flex; flex-direction: column; }
.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line);
  background: rgba(5, 10, 16, 0.55); backdrop-filter: blur(10px);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; font-family: var(--font-display); font-weight: 700; letter-spacing: 0.02em;
}
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.top-actions { display: flex; align-items: center; gap: 10px; }

.card-wrap { flex: 1; display: grid; place-items: center; padding: 28px 16px; }
.card {
  width: min(440px, 100%);
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.kicker {
  margin: 0 0 8px; text-transform: uppercase; letter-spacing: 0.14em;
  font-size: 0.72rem; color: var(--accent); font-weight: 600;
}
h1 {
  margin: 0 0 10px; font-family: var(--font-display); font-size: 1.7rem; font-weight: 700;
}
.lead { margin: 0 0 18px; color: var(--muted); line-height: 1.5; }
.notice {
  margin: 0 0 14px; padding: 10px 12px; border-radius: 10px; font-size: 0.92rem;
}
.notice--err { background: rgba(239, 107, 107, 0.15); color: #ffc9c9; }
.btn-google {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 12px 14px; border-radius: 12px; text-decoration: none;
  background: #fff; color: #1f1f1f; font-weight: 600;
}
.btn-google svg { width: 18px; height: 18px; }
.ghost, .btn {
  appearance: none; border: 1px solid var(--line); background: transparent; color: var(--ink);
  border-radius: 10px; padding: 8px 12px; font: inherit; cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, #2bb673, #3ecf8e); border: none; color: #04140c; font-weight: 700;
}
.foot { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 16px; }