:root {
  --bg: #08111c;
  --bg-2: #0d1724;
  --panel: rgba(16, 27, 42, 0.92);
  --line: rgba(141, 164, 194, 0.14);
  --text: #edf4ff;
  --muted: #88a0bb;
  --blue: #67b7ff;
  --red: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 12% 18%, rgba(103,183,255,0.16), transparent 28%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  color: var(--text);
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.auth-shell {
  width: 100%;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}
.card {
  width: min(420px, calc(100vw - 32px));
  padding: 22px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.card-wide {
  width: min(520px, calc(100vw - 32px));
}
h1 { margin: 0 0 8px; font-size: 30px; }
.eyebrow {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(103, 183, 255, 0.1);
  border: 1px solid rgba(103, 183, 255, 0.18);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9fd2ff;
  margin-bottom: 12px;
}
.sub { color: var(--muted); margin-bottom: 18px; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(9,17,29,.9);
  color: var(--text);
  margin-bottom: 14px;
}
button {
  width: 100%;
  padding: 12px 14px;
  border: 0;
  border-radius: 12px;
  background: var(--blue);
  color: #07111a;
  font-weight: 700;
  cursor: pointer;
}
.ghost {
  background: rgba(103, 183, 255, 0.12);
  color: var(--text);
  border: 1px solid rgba(103, 183, 255, 0.18);
}
.error { margin-top: 12px; color: var(--red); }
.modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(3, 8, 14, 0.76);
  backdrop-filter: blur(6px);
  z-index: 50;
}
.modal-card {
  width: min(560px, calc(100vw - 32px));
  padding: 24px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(18, 30, 46, 0.98), rgba(10, 18, 29, 0.96));
  border: 1px solid rgba(255, 107, 107, 0.16);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42);
}
.modal-card h2 {
  margin: 0 0 10px;
  font-size: 32px;
}
.modal-card button {
  margin-top: 8px;
}