body { 
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.05), transparent 40%),
                radial-gradient(circle at bottom left, rgba(56, 189, 248, 0.03), transparent 40%),
                var(--bg-main);
    min-height: 100vh; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: var(--text-main); 
    font-family: 'Inter', sans-serif; 
    margin: 0;
    padding: 20px;
}
.login-card { 
    max-width: 500px; 
    width: 100%; 
    padding: 3rem; 
    border-radius: var(--radius-xl); 
    background: var(--glass); 
    backdrop-filter: var(--glass-blur); 
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color); 
    text-align: center; 
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.6s ease-out;
}
.btn-profile { 
    border: 1px solid var(--border-color); 
    background: rgba(255,255,255,0.02); 
    color: var(--text-main); 
    padding: 2rem 1rem; 
    border-radius: var(--radius-lg); 
    transition: var(--transition); 
    text-decoration: none; 
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}
.btn-profile:hover { 
    border-color: var(--accent); 
    background: rgba(56, 189, 248, 0.05); 
    transform: translateY(-5px); 
    color: var(--accent); 
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.btn-profile i { 
    font-size: 3rem; 
    margin-bottom: 12px; 
    color: var(--accent); 
    transition: var(--transition);
}
.btn-profile:hover i {
    transform: scale(1.1);
}
.btn-profile span {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}
@media (max-width: 576px) {
    .login-card { padding: 2rem 1.5rem; }
    .btn-profile { padding: 1.5rem 1rem; }
    .btn-profile i { font-size: 2.5rem; }
    .btn-profile span { font-size: 1rem; }
    h1 { font-size: 2.2rem; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}