body {
    background-color: #1a1c20; 
    color: #eeeeee;
    margin: 0;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column; 
    align-items: center; 
    justify-content: center; 
    min-height: 100vh;
}


.login-container {
    background: #25282e; 
    padding: 40px;
    width: 350px;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
    text-align: center;
    border: 1px solid #333;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.login-container:hover {
    transform: translateY(-10px);
    border-color: #1976d2; 
}


h2 {
    color: #ffffff;
    font-size: 1.8rem;
    margin-bottom: 10px;
    text-transform: uppercase;
}

h3 {
    color: #ffffff; 
    font-size: 1rem;
    margin-bottom: 5px;
    opacity: 0.9; 
}

.form-group {
    margin-bottom: 20px;
    text-align: left; 
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: #cccccc; 
}

input {
    width: 100%;
    padding: 12px;
    background-color: #1a1c20;
    border: 1px solid #444;
    color: white;
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: #ffffff; 
}

button {
    width: 100%;
    padding: 15px;
    background-color: #1976d2;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
    transition: 0.3s;
}

button:hover {
    background-color: #1565c0;
}


.credenciales table {
    background-color: #25282e;
    border-collapse: collapse;
    width: 350px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    border: 1px solid #333;
}

.credenciales th {
    background-color: #111;
    color: #ffffff; 
    padding: 12px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.credenciales td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #333;
    color: #eeeeee;
}


.error {
    background-color: #3d1a1a;
    color: #ff8a8a;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 0.85rem;
    border: 1px solid #d32f2f;
}
.btn-secondary {
    display: block;
    width: 100%; 
    padding: 12px;
    margin-top: 15px;
    text-align: center;
    text-decoration: none !important;
    background-color: transparent;
    color: #ffffff !important; 
    border: 1px solid #444;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: bold;
    transition: 0.3s;
    box-sizing: border-box;
}

.btn-secondary:hover {
    background-color: #ffffff;
    color: #1a1c20 !important;
    border-color: #ffffff;
}