body {
  margin: 0;
  padding: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f0f0f0;
  font-family: 'Montserrat';
}

.login-box {
    background: white;
    padding: 20px 30px 30px 30px;
    border-radius: 12px;
    box-shadow: 0 0 0 2px rgba(74,144,226, 0.7); /* modrý "outline" jako stín */
    width: 100%;
    max-width: 350px;
    z-index: 999;
    text-align: center;
    box-sizing: border-box;
}


.login-box h2 {
    margin-bottom: 25px;
    font-size: 24px;
    color: #000;
}

.login-box input[type="text"],
.login-box input[type="password"] {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
}

.login-box input[type="text"]:focus,
.login-box input[type="password"]:focus {
  border-color: #0081bc;
  outline: none;
  box-shadow: 0 0 6px rgba(74,144,226,0.3);
}

.login-box button {
    width: 100%;
    padding: 12px;
    background-color: #0081bc;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.login-box button:hover {
    background-color: #00639E;
}

.login-box .error {
    color: red;
    margin-top: 15px;
    font-size: 14px;
}

.bg {
    position: fixed; /* Fixní pozadí */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0; /* Nižší než login */
    overflow: hidden;
}

.bg img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Obrázek vyplní celý prostor */
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.7); /* Lehké ztmavení – uprav podle potřeby */
    z-index: 1;
}