/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

/* Corpo */
body {
  background: linear-gradient(135deg, #1f2937, #374151);
  min-height: 100vh;
  color: #111;
}

/* LOGIN */
.login-box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #ffffff;
  padding: 32px;
  border-radius: 16px;
  width: 100%;
  max-width: 320px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  text-align: center;
}

.login-box h2 {
  margin-bottom: 20px;
}

.login-box input {
  width: 100%;
  padding: 12px;
  margin-bottom: 12px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  font-size: 14px;
}

.login-box button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: #374151;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s;
}

.login-box button:hover {
  opacity: 0.9;
}

/* HEADER */
.header {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  font-size: 22px;
}

.nav a {
  color: #e5e7eb;
  text-decoration: none;
  margin-left: 20px;
  font-size: 14px;
  transition: 0.2s;
}

.nav a:hover {
  opacity: 0.7;
}

/* CONTAINER */
.container {
  padding: 30px;
  display: flex;
  justify-content: center;
}

/* CARD */
.card {
  background: #ffffff;
  padding: 28px;
  border-radius: 16px;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}

.card h2 {
  margin-bottom: 20px;
  font-size: 20px;
}

/* FORM */
.form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.form input {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  font-size: 14px;
}

.form input:focus {
  outline: none;
  border-color: #6b7280;
  box-shadow: 0 0 0 2px rgba(107, 114, 128, 0.2);
}

.form button {
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  background: #374151;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s;
}

.form button:hover {
  opacity: 0.9;
}

/* LISTA */
.lista {
  list-style: none;
}

.lista li {
  background: #f9fafb;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 10px;
  font-size: 14px;
  border: 1px solid #e5e7eb;
}

/* RESPONSIVO */
@media (max-width: 480px) {
  .form {
    flex-direction: column;
  }

  .form button {
    width: 100%;
  }

  .container {
    padding: 20px;
  }
}