/* Fundo Animado Premium para a página toda */
body {
    background: linear-gradient(-45deg, #4f46e5, #ec4899, #3b82f6, #8b5cf6);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
}

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

/* O Cartão de Login (Efeito Glassmorphism centralizado) */
.content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 450px;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.content h1 {
    font-weight: 700;
    font-size: 1.8rem;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

/* Micro-animação ao carregar a página */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}