.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    background-color: var(--bg-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 8px 0;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    border-top: 1px solid var(--secondary-bg-color);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--hint-color);
    font-size: 10px;
    font-weight: 500;
    margin-top: 4px;
    transition: color 0.2s ease;
    flex: 1;
}

.nav-item .icon {
    width: 24px;
    height: 24px;
    margin-bottom: 4px;
}

.nav-item.active {
    color: var(--button-color);
}

.nav-item-fab {
    position: relative;
    top: -16px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 0.8;
}

.fab-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--button-color), #5a9ce2);
    color: var(--button-text-color);
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: transform 0.1s ease;
}

.fab-btn:active {
    transform: scale(0.92);
}

.fab-btn .icon-plus {
    width: 28px;
    height: 28px;
}