/* Fundo com Gradiente Animado */
body.auth-page {
    background: linear-gradient(-45deg, #0f172a, #1e1b4b, #312e81, #4c1d95);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

/* Card com efeito de Vidro (Glassmorphism) */
.auth-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border-radius: 24px;
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    position: relative;
    overflow: hidden;
}

/* Brilho no topo do card */
.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.05), transparent);
    transform: rotate(30deg);
    pointer-events: none;
}

.auth-title {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* Inputs bonitos */
.input-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.input-field {
    width: 100%;
    background: rgba(15, 23, 42, 0.6);
    border: 2px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 1rem 1rem 3rem; /* Espaço para ícone */
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    outline: none;
}

.input-field:focus {
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* Botão Chamativo */
.btn-primary {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(to right, var(--primary), var(--accent));
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -5px rgba(99, 102, 241, 0.6);
}

.btn-primary:active {
    transform: scale(0.98);
}

.auth-links {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

.link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
    cursor: pointer;
}

.link:hover {
    color: #c084fc;
    text-shadow: 0 0 10px rgba(192, 132, 252, 0.5);
}

.error-msg {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #fca5a5;
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    display: none; /* Escondido por padrão */
}