:root {
  color-scheme: dark;
  --bg: #0f172a;
  --panel: rgba(15, 23, 42, 0.78);
  --panel-strong: rgba(30, 41, 59, 0.86);
  --text: #e5e7eb;
  --muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.24);
  --accent: #6366f1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(249, 115, 22, 0.22), transparent 34rem),
    radial-gradient(circle at top right, rgba(139, 92, 246, 0.18), transparent 30rem),
    linear-gradient(135deg, #020617 0%, var(--bg) 100%);
}

main {
  width: min(620px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 48px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.intro {
  max-width: 560px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

a { color: #c4b5fd; text-decoration: none; font-weight: 700; }

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 18px 60px rgba(2, 6, 23, 0.22);
  backdrop-filter: blur(8px);
}

label.field {
  display: block;
  margin-bottom: 16px;
}

label.field > span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

input[type="email"],
input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(2, 6, 23, 0.6);
  color: var(--text);
  font: inherit;
  font-size: 0.98rem;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input[type="email"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.22);
}

.providers {
  display: grid;
  gap: 10px;
  margin: 4px 0 22px;
}

.provider {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.45);
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}

.provider:hover { border-color: rgba(148, 163, 184, 0.4); }

.provider input { accent-color: var(--accent); width: 18px; height: 18px; }

.provider .dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  flex-shrink: 0;
}

.provider .meta { display: flex; flex-direction: column; }
.provider .name { font-weight: 700; font-size: 0.96rem; }
.provider .tag { color: var(--muted); font-size: 0.82rem; }

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 13px 18px;
  border: none;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  transition: filter 160ms ease, transform 160ms ease;
}

button:hover { filter: brightness(1.1); transform: translateY(-1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.muted { color: var(--muted); font-size: 0.85rem; }

.status {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.45;
  display: none;
}

.status.show { display: block; }
.status.ok { background: rgba(34, 197, 94, 0.12); border: 1px solid rgba(34, 197, 94, 0.4); color: #86efac; }
.status.err { background: rgba(239, 68, 68, 0.12); border: 1px solid rgba(239, 68, 68, 0.4); color: #fca5a5; }
.status.info { background: rgba(99, 102, 241, 0.12); border: 1px solid rgba(99, 102, 241, 0.4); color: #c7d2fe; }

.result-card {
  text-align: center;
  padding: 40px 28px;
}

.result-card .badge {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.result-card .badge.ok { background: rgba(34, 197, 94, 0.16); color: #86efac; }
.result-card .badge.warn { background: rgba(234, 179, 8, 0.16); color: #fde68a; }

.result-card h2 { margin: 0 0 10px; font-size: 1.5rem; letter-spacing: -0.03em; }
.result-card p { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.55; }

.back {
  display: inline-flex;
  margin-top: 28px;
}

@media (max-width: 560px) {
  main { padding: 36px 0; }
  .card { padding: 18px; }
}