:root {
  --bg-a: #05131c;
  --bg-b: #0b1f2d;
  --card-a: rgba(9, 25, 34, 0.92);
  --card-b: rgba(7, 20, 28, 0.94);
  --line: rgba(0, 255, 180, 0.22);
  --text: #e8fff7;
  --muted: #9cc2b5;
  --accent: #00ffa1;
  --accent-2: #13d7ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 8%, rgba(19, 215, 255, 0.16), transparent 24%),
    radial-gradient(circle at 86% 88%, rgba(0, 255, 161, 0.14), transparent 28%),
    linear-gradient(150deg, var(--bg-a), var(--bg-b));
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card {
  width: min(460px, 100%);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, var(--card-a), var(--card-b));
  box-shadow: 0 25px 58px rgba(0, 0, 0, 0.45);
}

.login-badge {
  margin: 0 0 6px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-2);
}

h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.05;
}

.login-subtitle {
  margin: 10px 0 0;
  color: var(--muted);
}

.login-form {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}

.login-form label {
  display: grid;
  gap: 7px;
}

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

.login-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(8, 24, 33, 0.9);
  color: var(--text);
  padding: 12px 13px;
  font-size: 16px;
  outline: none;
}

.login-form input:focus {
  border-color: rgba(0, 255, 161, 0.68);
  box-shadow: 0 0 0 2px rgba(0, 255, 161, 0.2);
}

#login-submit {
  margin-top: 4px;
  border: 1px solid rgba(0, 255, 161, 0.7);
  border-radius: 11px;
  background: linear-gradient(120deg, rgba(0, 255, 161, 0.22), rgba(19, 215, 255, 0.2));
  color: var(--text);
  padding: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

#login-submit:disabled {
  opacity: 0.6;
  cursor: wait;
}

.login-status {
  min-height: 20px;
  margin: 14px 0 0;
  font-size: 14px;
  color: #ff9da7;
}