.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    width: 100%;
    padding: 16px;
    box-sizing: border-box;
}

.auth-card {
    background: var(--branco);
    padding: 24px;
    border-radius: 25px;
    width: 100%;
    max-width: 380px;
    border: 4px solid var(--primaria);
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    
    animation: authPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes authPop {
    from { 
        opacity: 0; 
        transform: scale(0.9) translateY(15px); 
    }
    to { 
        opacity: 1; 
        transform: scale(1) translateY(0); 
    }
}

.auth-tabs {
    display: flex;
    background: var(--secundaria);
    padding: 6px;
    border-radius: 20px;
    margin-bottom: 24px;
}

.auth-tabs button {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-weight: 700;
    border-radius: 15px;
    color: var(--contraste);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.auth-tabs button.active {
    background: var(--primaria);
    color: var(--contraste);
}

.auth-title {
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
    color: var(--contraste);
}

#form-login, #form-registro {
    animation: fadeInSlide 0.4s ease forwards;
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.input-group {
    margin-bottom: 12px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    border: 2px solid var(--secundaria);
    background: var(--branco);
    color: var(--contraste);
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primaria);
    box-shadow: 0 0 0 3px rgba(179, 229, 252, 0.3);
}

.input-group input.error {
    border-color: var(--acentuacao) !important;
    background-color: #FFF5F7;
    animation: shake 0.3s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.btn-auth {
    width: 100%;
    background: var(--primaria);
    border: none;
    padding: 14px;
    border-radius: 20px;
    font-weight: 700;
    color: var(--contraste);
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.2s;
}

.btn-auth:hover {
    filter: brightness(0.95);
}

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

.divider {
    text-align: center;
    margin: 20px 0;
    font-size: 0.9rem;
    color: var(--contraste);
    opacity: 0.6;
}

.btn-google {
    width: 100%;
    padding: 12px;
    border-radius: 20px;
    border: 2px solid var(--secundaria);
    background: var(--branco);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    color: var(--contraste);
    cursor: pointer;
    transition: background 0.2s;
}

.btn-google:hover {
    background: #f8f8f8;
}

.btn-google img {
    width: 18px;
}