body {
    background: linear-gradient(135deg, #6c757d, #343a40);
    background-size: 400% 400%;
    animation: gradientAnimation 8s ease infinite;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

@keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.login-container {
    background: rgba(0, 0, 0, 0.7);
    padding: 60px;
    border-radius: 25px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    max-width: 400px;
    width: 100%;
    text-align: center;
    animation: fadeIn 1.5s ease;
}

@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

.form-control {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
}

.btn-custom {
    background: #ffc107;
    border: none;
    font-size: 1.1rem;
    padding: 10px 25px;
    transition: all 0.3s;
}

.btn-custom:hover {
    background: #e0a800;
    transform: translateY(-3px);
}

.btn-secondary {
    background: transparent;
    color: #ffc107;
    border: 2px solid #ffc107;
    font-size: 1rem;
    padding: 10px 20px;
    margin-left: 10px;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: #ffc107;
    color: #343a40;
}

.alert-custom {
    padding: 15px;
    margin-top: 20px;
    margin-bottom: 30px;
    border-radius: 5px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.alert-custom i {
    margin-right: 10px;
    font-size: 1.5rem;
}

.alert-success {
    background-color: #28a745;
    color: white;
}

.alert-error {
    background-color: #dc3545;
    color: white;
    animation: shake 0.5s ease;
}

.alert-warning {
    background-color: #ffc107;
    color: white;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
}

.logo {
    max-width: 200px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px rgba(255, 184, 0, 0.3));
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 10px;
}

footer {
    font-size: 0.9rem;
    margin-top: 40px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
}

footer a {
    color: #ffc107;
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

.password-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: none;
    color: #ffc107;
    cursor: pointer;
    padding: 0;
    font-size: 1rem;
}

.password-toggle:hover {
    color: #e0a800;
}