:root {
  --bg-a: #0f172a;
  --bg-b: #1f2937;
  --panel: #0b1220;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --line: rgba(255, 255, 255, 0.14);
  --ok: #22c55e;
  --err: #ef4444;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(59, 130, 246, 0.25), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(34, 197, 94, 0.25), transparent 40%),
    linear-gradient(160deg, var(--bg-a), var(--bg-b));
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px;
}

.login-card {
  width: 100%;
  max-width: 460px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 24px 45px rgba(0, 0, 0, 0.4);
}

h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.1;
}

.subtitle {
  margin: 10px 0 18px;
  color: var(--muted);
  font-size: 16px;
}

.field {
  display: block;
  margin-bottom: 14px;
}

.field span {
  display: block;
  margin-bottom: 6px;
  color: #d1d5db;
}

.field input {
  width: 100%;
  height: 52px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(2, 6, 23, 0.75);
  color: var(--text);
  padding: 0 14px;
  font-size: 18px;
}

#loginBtn {
  width: 100%;
  height: 56px;
  border: 0;
  border-radius: 14px;
  cursor: pointer;
  background: linear-gradient(180deg, #22c55e, #15803d);
  color: #f0fdf4;
  font-size: 18px;
  font-weight: 700;
}

#loginBtn:disabled {
  opacity: 0.6;
  cursor: default;
}

.status {
  margin: 14px 0 0;
  font-size: 15px;
  min-height: 22px;
}

.status.muted {
  color: var(--muted);
}

.status.ok {
  color: var(--ok);
}

.status.error {
  color: var(--err);
}