body {
    background: linear-gradient(135deg, #dee2ff, #0d6efd);
    min-height: 100vh;
}
.content{
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100%;
    padding: 16px;
}
.app-logo {
    width: 6.25rem;
    height: 6.25rem;
    object-fit: contain;
    margin-bottom: 1.25rem;
    border-radius: 0.5rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.pin-card {
    background: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border-radius: 18px;
    padding: 32px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
}

.pin-inputs input {
    width: 55px;
    height: 55px;
    text-align: center;
    font-size: 22px;
    font-weight: 600;
    border-radius: 12px;
    border: 2px solid #dee2e6;
}

.pin-inputs input:focus {
    border-color: #0d6efd;
    box-shadow: none;
}

.shake {
    animation: shake 0.35s;
}

@keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
    100% { transform: translateX(0); }
}

.verify-btn{
    background-color: rgb(75, 75, 240);
    border: none;
    padding: 10px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: 0.3s;
    width: 100%;
    border-radius: 12px;
    color: white;
    cursor: pointer; /* default state */
}
.verify-btn:hover:not(.dis-btn) {
    background-color: rgb(75, 75, 240);
}

.verify-btn.dis-btn {
    background-color: rgb(75, 75, 240);
    cursor: not-allowed;
    opacity: 0.6;
}

.footer{
    position: fixed;
    bottom: 30px;
    left: 0;
    width: 100%;
    height: 50px;
    
    display: flex;
    align-items: center;
    justify-content: center;

    color: #ffffff;
    font-size: 1rem;
    z-index: 1020;

}
.footer span {
    padding: 6px 16px;
    border-radius: 20px;
    background: #0d6efd;
    box-shadow:
        0 4px 10px rgba(0, 0, 0, 0.25),
        0 1px 3px rgba(255, 255, 255, 0.15) inset;

    text-shadow:
        0 1px 2px rgba(0, 0, 0, 0.25),
        0 2px 6px rgba(0, 0, 0, 0.15);
}

/* ================= MOBILE RESPONSIVE ================= */
@media (max-width: 576px) {
    
    .pin-card {
        border-radius: 8px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        padding: 24px 16px;
        max-width: 100%;
    }
    .pin-inputs {
        gap: 8px !important;
    }

    .pin-inputs input {
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    h4 {
        font-size: 1.1rem;
    }

    p {
        font-size: 0.9rem;
    }

    .verify-btn {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    .form-control {
        padding: 10px;
        font-size: 0.95rem;
    }
}

@media (max-width: 360px) {
    .pin-card {
        padding: 20px 12px;
    }

    .pin-inputs input {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    h4 {
        font-size: 1rem;
    }
}