* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Montserrat', sans-serif;
    background: radial-gradient(ellipse at top right, #1a3a3a 0%, #0a0a0a 50%, #0a0a0a 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
.login-container {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 50px 40px;
    width: 380px;
    text-align: center;
}
.login-container .logo {
    color: var(--panel-accent);
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 40px;
    letter-spacing: 1px;
}
.login-container h1 {
    color: #ffffff;
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 40px;
    line-height: 1.4;
}
.login-error {
    display: none;
    padding: 12px 16px;
    margin-bottom: 16px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: 8px;
    color: #f87171;
    font-size: 14px;
    text-align: left;
}
.login-error.visible {
    display: block;
}
.login-container .form-group {
    margin-bottom: 20px;
    text-align: left;
}
.login-container label {
    display: block;
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    font-weight: 400;
    margin-bottom: 8px;
}
.login-container input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: #ffffff;
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    outline: none;
}
.login-container input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}
.login-container button {
    width: 100%;
    padding: 14px;
    background: var(--panel-accent);
    border: none;
    border-radius: 4px;
    color: #000000;
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
}
.login-container button:hover {
    background: #25b8a6;
}