:root {
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --ink: #0f172a;
  --line: #cbd5e1;
  --muted: #64748b;
  --white: #ffffff;
  --success: #15803d;
  --error: #b91c1c;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 20% 20%, #1e293b 0%, #0f172a 55%, #0b1120 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

#webmail-login {
  width: 100%;
  max-width: 380px;
}

.voltar {
  display: inline-block;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, .7);
  font-size: 13px;
  text-decoration: none;
}

.voltar:hover {
  color: #fff;
}

.card {
  background: var(--white);
  border-radius: 12px;
  padding: 32px 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .35);
  text-align: center;
}

.logo {
  max-width: 220px;
  width: 100%;
  height: auto;
  border-radius: 6px;
  margin-bottom: 22px;
}

form {
  text-align: left;
}

#notificacao {
  display: none;
  margin-bottom: 16px;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 13px;
  border-left: 4px solid var(--muted);
  background: #f1f5f9;
  color: var(--muted);
}

#notificacao.success {
  display: block;
  color: var(--success);
  border-color: var(--success);
  background: #f0fdf4;
}

#notificacao.error {
  display: block;
  color: var(--error);
  border-color: var(--error);
  background: #fef2f2;
}

label {
  display: block;
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 11px 12px;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fafc;
  color: var(--ink);
  font-size: 14px;
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
}

#lembrar-me {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--muted);
}

#lembrar-me label {
  margin: 0;
  font-weight: 400;
}

.button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 6px;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.button:hover {
  background: var(--accent-dark);
}