/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.login-container {
    background-color: #1e1e2f;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 400px;
}

.login-container h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.8em;
    color: #ffffff;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #ccc;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    background-color: #2c2c3e;
    color: #fff;
    font-size: 16px;
    outline: none;
    transition: 1.1s;
}

.input-group input:focus {
    background-color: #3a3a5e;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #4c8bf5;
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background-color: #3a6edb;
}

#error-message {
    color: #ff4c4c;
    text-align: center;
    margin-top: 15px;
    display: none;
    font-size: 14px;
}