:root {
    --primary: #4e73df;
    --primary-dark: #2e59d9;
    --secondary: #858796;
    --success: #1cc88a;
    --info: #36b9cc;
    --warning: #f6c23e;
    --danger: #e74a3b;
    --light: #f8f9fc;
    --dark: #5a5c69;
    --border-radius: 0.35rem;
    --box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Nunito', sans-serif;
}

body {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    text-align: center;
}

.logo {
    margin-bottom: 2rem;
}

.logo img {
    max-width: 150px;
    height: auto;
}

.title {
    color: var(--dark);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.note {
    color: var(--secondary);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    display: block;
}

.form-group {
    margin-bottom: 1rem;
    text-align: left;
    position: relative;
}

.form-group label {
    display: block;
    color: var(--dark);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group i {
    position: absolute;
    left: 1rem;
    top: 2.3rem;
    color: var(--secondary);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.875rem;
    border: 1px solid #d1d3e2;
    border-radius: var(--border-radius);
    transition: border-color 0.15s ease-in-out;
}

.form-group input:focus {
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

.btn-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    background-color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.15s ease-in-out;
}

.btn-login:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.alert {
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.footer {
    margin-top: 2rem;
    color: var(--secondary);
    font-size: 0.75rem;
}

@media (max-width: 576px) {
    .login-container {
        padding: 1.5rem;
    }
    
    .logo img {
        max-width: 120px;
    }
    
    .title {
        font-size: 1.25rem;
    }
}