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

body {
    background: linear-gradient(135deg, var(--tsa-navy-blue) 0%, var(--tsa-dark-navy-blue) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    position: relative;
    overflow: hidden;
}

.register-container{
    max-width: 600px;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--tsa-navy-blue), var(--tsa-dark-navy-blue));
}

.title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--tsa-navy-blue), var(--tsa-dark-navy-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #f8f9fa;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--tsa-navy-blue);
    background-color: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input[type="text"]::placeholder,
input[type="password"]::placeholder {
    color: #adb5bd;
}

.alert {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.register-link {
    text-align: center;
    margin: 20px 0;
    color: #666;
}

.register-link a {
    color: var(--tsa-navy-blue);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.register-link a:hover {
    color: var(--tsa-dark-navy-blue);
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--tsa-navy-blue) 0%, var(--tsa-dark-navy-blue) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-login:active {
    transform: translateY(0);
}

.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #e1e5e9, transparent);
    margin: 25px 0;
}

/* Responsive design */
@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
        margin: 10px;
    }

    .title {
        font-size: 2rem;
    }

    input[type="text"],
    input[type="password"],
    .btn-login {
        padding: 12px;
    }
}

/* Animation for form appearance */
.login-container {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Input focus animation */
.form-group {
    position: relative;
}

.form-group::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--tsa-navy-blue), var(--tsa-dark-navy-blue));
    transition: width 0.3s ease;
}

.form-group:focus-within::after {
    width: 100%;
}