:root {
  --bg: #eef4f8;
  --ink: #17212f;
  --muted: #5d6878;
  --line: #d9e2ea;
  --accent: #1f7a8c;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: linear-gradient(145deg, #eef4f8 0%, #f8fbfd 52%, #edf6f2 100%);
}

button,
input {
  font: inherit;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.login-card {
  width: min(460px, 100%);
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  padding: clamp(1.2rem, 5vw, 2rem);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 46px rgba(23, 33, 47, 0.12);
}

.login-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.65rem;
  color: #fff;
  background: var(--accent);
  font-weight: 800;
}

.login-kicker {
  border: 1px solid rgba(31, 122, 140, 0.24);
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  color: #145363;
  background: #e9f6f8;
  font-size: 0.82rem;
  font-weight: 800;
}

h1 {
  margin: 1rem 0 0.45rem;
  font-size: clamp(1.55rem, 5vw, 2.1rem);
  line-height: 1.05;
}

.lead {
  margin-bottom: 0.3rem;
  color: var(--ink);
  font-weight: 800;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.login-form {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.3rem;
}

label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.72rem 0.8rem;
  color: var(--ink);
  background: #fff;
}

input:focus {
  border-color: rgba(31, 122, 140, 0.65);
  outline: 3px solid rgba(31, 122, 140, 0.14);
}

button {
  min-height: 2.6rem;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  padding: 0.65rem 0.9rem;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
  font-weight: 800;
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.status {
  min-height: 1.4rem;
  margin-top: 0.9rem;
  border-radius: 0.5rem;
  padding: 0.7rem 0;
}

.status.error {
  border: 1px solid rgba(180, 35, 24, 0.2);
  padding: 0.7rem;
  color: var(--danger);
  background: #fff1f0;
}

.status.ok {
  border: 1px solid rgba(24, 121, 78, 0.2);
  padding: 0.7rem;
  color: #18794e;
  background: #edf8f1;
}

.hint {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 0.9rem;
  font-size: 0.88rem;
}