:root {
  color-scheme: dark;
  --bg: #0d1319;
  --surface: #121a22;
  --surface-strong: #18222c;
  --line: #26333f;
  --line-strong: #315260;
  --text: #f2f5f7;
  --muted: #9aa8b5;
  --accent: #35d5c3;
  --accent-soft: rgba(53, 213, 195, 0.14);
  --danger: #f1b7ad;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at 16% 12%, rgba(53, 213, 195, 0.12), transparent 28%),
    linear-gradient(145deg, #0b1117 0%, var(--bg) 52%, #0a1015 100%);
  color: var(--text);
}

button,
input {
  font: inherit;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.login-card {
  width: min(100%, 420px);
  display: grid;
  gap: 28px;
  padding: 34px;
  border: 1px solid var(--line);
  border-left-color: rgba(53, 213, 195, 0.72);
  border-left-width: 4px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(18, 26, 34, 0.96), rgba(15, 22, 30, 0.96));
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.24);
}

.login-card__copy {
  display: grid;
  gap: 12px;
}

.login-card h1 {
  margin: 0;
  font-size: clamp(34px, 8vw, 48px);
  line-height: 0.94;
  letter-spacing: -0.07em;
}

.login-card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.login-form {
  display: grid;
  gap: 16px;
}

.login-form label {
  display: grid;
  gap: 8px;
}

.login-form span {
  color: var(--muted);
  font-size: 13px;
}

.login-form input {
  width: 100%;
  min-height: 46px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #0e151c;
  color: var(--text);
  outline: none;
}

.login-form input:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.login-form button {
  min-height: 46px;
  border: 1px solid rgba(53, 213, 195, 0.45);
  border-radius: 9px;
  background: #12332f;
  color: #ecfffb;
  cursor: pointer;
  font-weight: 700;
}

.login-form button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.login-error {
  padding: 10px 12px;
  border: 1px solid rgba(241, 183, 173, 0.28);
  border-radius: 9px;
  background: rgba(241, 183, 173, 0.08);
  color: var(--danger);
  font-size: 14px;
}

@media (max-width: 520px) {
  .login-shell {
    align-items: start;
    padding: 20px;
  }

  .login-card {
    margin-top: 48px;
    padding: 26px;
  }
}