:root {
  --brand-accent: #1a5f4a;
  --brand-accent-contrast: #ffffff;
  --brand-bg: #0f172a;
  --card: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --err: #f87171;
  --ok: #4ade80;
  --warn: #fbbf24;
  --border: #334155;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background:
    radial-gradient(1200px 600px at 10% -10%, color-mix(in srgb, var(--brand-accent) 35%, transparent), transparent),
    var(--brand-bg);
  color: var(--text);
}
.wrap { max-width: 420px; margin: 0 auto; padding: 3rem 1.25rem; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 1.75rem; box-shadow: 0 20px 40px rgba(0,0,0,.35);
}
.brand-header { margin-bottom: 1.25rem; }
.brand-logo { max-width: 180px; max-height: 48px; display: block; }
.brand-fallback { display: flex; align-items: center; gap: .75rem; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 10px; background: var(--brand-accent);
  display: grid; place-items: center; font-weight: 700; color: var(--brand-accent-contrast);
}
.brand-fallback h1 { font-size: 1.15rem; margin: 0; }
.brand-fallback p { margin: .15rem 0 0; color: var(--muted); font-size: .85rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; font-weight: 600; }
label { display: block; font-size: .85rem; color: var(--muted); margin: .85rem 0 .35rem; }
input[type=text], input[type=email], input[type=password], input[type=tel] {
  width: 100%; padding: .7rem .8rem; border-radius: 10px;
  border: 1px solid #475569; background: #0f172a; color: var(--text);
}
button, .btn {
  display: inline-block; width: 100%; margin-top: 1rem; padding: .75rem 1rem; border: 0; border-radius: 10px;
  background: var(--brand-accent); color: var(--brand-accent-contrast); font-weight: 600; cursor: pointer;
  text-align: center; text-decoration: none;
}
.btn-secondary {
  background: transparent; border: 1px solid var(--border); color: var(--text);
}
.btn-link {
  background: none; border: 0; color: #93c5fd; width: auto; padding: 0; margin: 0; font-weight: 500;
  cursor: pointer; text-decoration: underline; font-size: .9rem;
}
.links { margin-top: 1rem; display: flex; justify-content: space-between; gap: 1rem; font-size: .9rem; flex-wrap: wrap; }
.links a { color: #93c5fd; }
.validation-summary-errors, .field-validation-error, .err { color: var(--err); font-size: .9rem; }
.ok { color: var(--ok); font-size: .9rem; }
.warn-box {
  margin: 1rem 0; padding: .85rem 1rem; border-radius: 10px;
  background: color-mix(in srgb, var(--warn) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  color: #fde68a; font-size: .9rem; line-height: 1.4;
}
.nudge {
  margin: 0 0 1rem; padding: .75rem 1rem; border-radius: 10px;
  background: color-mix(in srgb, var(--brand-accent) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand-accent) 35%, transparent);
  font-size: .9rem; line-height: 1.4;
}
.checkbox { display: flex; align-items: center; gap: .5rem; margin-top: .75rem; color: var(--muted); font-size: .9rem; }
.checkbox input { width: auto; }
.tabs { display: flex; gap: .5rem; margin-bottom: 1rem; }
.tabs a {
  flex: 1; text-align: center; padding: .5rem; border-radius: 8px; color: var(--muted);
  text-decoration: none; border: 1px solid var(--border); font-size: .9rem;
}
.tabs a.active { background: var(--brand-accent); color: var(--brand-accent-contrast); border-color: transparent; }
.muted { color: var(--muted); font-size: .9rem; line-height: 1.45; }
footer { margin-top: 1.5rem; text-align: center; color: var(--muted); font-size: .75rem; }
footer a { color: #93c5fd; }
.stack > * + * { margin-top: .5rem; }