body.auth-bg {
    background-color: #f4f6f8;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    font-family: 'Poppins', sans-serif;
    color: #1f2937;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    border: 1px solid #e2e6ea;
    box-shadow: 0 4px 12px rgba(16, 24, 32, 0.08);
    border-radius: 8px;
    background: #ffffff;
}

.auth-header {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a2634;
    letter-spacing: -0.01em;
}

.btn-primary {
    background-color: #2f6fa8;
    border-color: #2f6fa8;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: #255a89 !important;
    border-color: #255a89 !important;
}

/* PIN Login specific styles */
.pin-display {
    letter-spacing: 0.5em;
    font-size: 1.85rem;
    background-color: #f8fafc;
    border-radius: 6px;
    height: 56px;
    text-align: center;
    border: 1px solid #cbd3da;
    color: #1f2937;
}

.keypad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.85rem;
}

.keypad-btn {
    font-size: 1.35rem;
    font-weight: 500;
    border-radius: 50%;
    height: 68px;
    width: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 1px solid #cbd3da;
    background: #ffffff;
    color: #1f2937;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.keypad-btn:hover {
    background-color: #f1f4f8;
    border-color: #94a3b8;
}

.keypad-btn#submit-btn {
    background-color: #2f6fa8;
    border-color: #2f6fa8;
    color: #ffffff;
}

.keypad-btn#submit-btn:hover {
    background-color: #255a89;
    border-color: #255a89;
}