.form-signin {
    max-width: 400px;
    padding: 1.5rem;
    margin: 0 auto;
    width: 100%;
}

.form-signin .form-signin-heading,
.form-signin .checkbox {
    margin-bottom: 1rem;
}

.form-signin .checkbox {
    font-weight: normal;
}

.form-signin .form-control {
    position: relative;
    font-size: 16px;
    height: auto;
    padding: 1rem;
    border-radius: 0.375rem;
    border: 1px solid #dee2e6;
    transition: all 0.2s ease-in-out;
    box-sizing: border-box;
}

.form-signin .form-control:focus {
    z-index: 2;
}

.form-signin input[type="email"],
.form-signin input[type="text"] {
    margin-bottom: var(--spacer-sm, 0.5rem);
    border-radius: var(--border-radius, 0.375rem);
}

.form-signin input[type="password"] {
    margin-bottom: var(--spacer-md, 1rem);
    border-radius: var(--border-radius, 0.375rem);
}

.account-wall {
    margin: 3rem auto;
    padding: 3rem 1.5rem 1.5rem;
    background-color: #ffffff;
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    border-radius: 0.5rem;
    max-width: 420px;
    width: 90%;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-title {
    color: #555;
    font-size: 18px;
    font-weight: 400;
    display: block;
}

.profile-img {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacer-lg, 1.5rem);
    display: block;
    border-radius: 50%;
    object-fit: contain;
    transition: var(--transition-base, all 0.2s ease-in-out);
}

.profile-img:hover {
    transform: scale(1.05);
}

.need-help {
    margin-top: var(--spacer-md, 1rem);
    text-align: center;
}

.new-account {
    display: block;
    margin-top: var(--spacer-md, 1rem);
    text-align: center;
}

/* ========================================
   MOBILE RESPONSIVE ENHANCEMENTS
   ======================================== */
@media (max-width: 576px) {
    .account-wall {
        margin: var(--spacer-md, 1rem) auto;
        padding: var(--spacer-lg, 1.5rem) var(--spacer-md, 1rem);
        width: 95%;
        min-height: 350px;
    }
    
    .form-signin {
        max-width: 100%;
        padding: var(--spacer-md, 1rem);
    }
    
    .profile-img {
        width: 100px;
        height: 100px;
        margin-bottom: var(--spacer-md, 1rem);
    }
    
    .form-signin .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: var(--spacer-sm, 0.75rem) var(--spacer-md, 1rem);
    }
    
    .btn {
        padding: var(--spacer-sm, 0.75rem) var(--spacer-md, 1rem);
        font-size: 1rem;
    }
}

@media (max-width: 400px) {
    .account-wall {
        margin: var(--spacer-sm, 0.5rem) auto;
        padding: var(--spacer-md, 1rem) var(--spacer-sm, 0.5rem);
        width: 98%;
    }
    
    .profile-img {
        width: 80px;
        height: 80px;
    }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
   ======================================== */
.form-signin .form-control:focus {
    outline: 2px solid var(--primary-color, #0d6efd);
    outline-offset: 2px;
    border-color: var(--primary-color, #0d6efd);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.btn:focus {
    outline: 2px solid var(--primary-color, #0d6efd);
    outline-offset: 2px;
}

/* Loading state */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}