* {
  box-sizing: border-box;
  font-family: Tahoma, sans-serif;
}

body, html {
  margin: 0;
  height: 100%;
}

.page {
  position: relative;
  min-height: 100vh;
  background: url("../img/bg.jpg") center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
}

.login-box {
  position: relative;
  width: 100%;
  max-width: 320px;
  background: rgba(0,0,0,.75);
  padding: 25px;
  border-radius: 16px;
  color: #fff;
  z-index: 1;
}

.login-box h1 {
  margin-bottom: 20px;
  font-size: 18px;
  text-align: center;
}

.login-box input,
.login-box select {
  width: 100%;
  margin-bottom: 12px;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #444;
  background: #111;
  color: #fff;
  font-size: 14px;
}

.captcha {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

.captcha img {
  border-radius: 6px;
}

.login-box button {
  width: 100%;
  padding: 12px;
  border-radius: 999px;
  border: none;
  background: #ff9800;
  color: #000;
  font-size: 15px;
  cursor: pointer;
  transition: .3s;
}

.login-box button:hover {
  background: #ffc107;
}

@media (max-width: 400px) {
  .login-box {
    margin: 0 10px;
    padding: 20px;
  }
}