/* --- Bottom Sticky Architecture --- */
.cora-mobile-app-bar {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 450px;
    z-index: 9999;
}

.app-bar-inner {
    background: #ffffff;
    border-radius: 24px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* --- Nav Group Distribution --- */
.nav-group {
    display: flex;
    flex: 1;
    justify-content: space-around;
    align-items: center;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    color: #64748b;
    transition: color 0.3s ease;
}

.nav-item i, .nav-item svg { font-size: 20px; width: 24px; height: 24px; }
.nav-label { font-size: 11px; font-weight: 700; }

/* --- Central Floating Action Button --- */
.central-fab {
    width: 80px;
    height: 80px;
    position: relative;
    top: -20px; /* Protrudes above the bar */
    display: flex;
    justify-content: center;
}

.fab-circle {
    width: 64px;
    height: 64px;
    background: #f1f5f9;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #64748b;
    border: 4px solid #ffffff; /* Seamless integration with bar */
    box-shadow: 0 8px 16px rgba(0,0,0,0.05);
}